MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder

java.lang.Object
- org.rocksdb.AbstractMutableOptions.AbstractMutableOptionsBuilder<MutableColumnFamilyOptions,MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder,org.rocksdb.MutableColumnFamilyOptions.MutableColumnFamilyOptionKey>
- - org.rocksdb.MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder

所有已实现的接口:: AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>, MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>

封闭类:: MutableColumnFamilyOptions

public static class MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder
extends AbstractMutableOptions.AbstractMutableOptionsBuilder<MutableColumnFamilyOptions,MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder,org.rocksdb.MutableColumnFamilyOptions.MutableColumnFamilyOptionKey>
implements MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`protected java.util.Map<java.lang.String,org.rocksdb.MutableColumnFamilyOptions.MutableColumnFamilyOptionKey>`	`allKeys()` Get all the possible keys
`long`	`arenaBlockSize()` The size of one block in arena memory allocation.
`long`	`blobCompactionReadaheadSize()` Get compaction readahead for blob files.
`CompressionType`	`blobCompressionType()` Get the compression algorithm in use for large values stored in blob files.
`long`	`blobFileSize()` The size limit for blob files.
`int`	`blobFileStartingLevel()` Get the starting LSM tree level to enable blob files.
`double`	`blobGarbageCollectionAgeCutoff()` Get cutoff in terms of blob file age for garbage collection.
`double`	`blobGarbageCollectionForceThreshold()` Get the current value for the `#blobGarbageCollectionForceThreshold`
`protected MutableColumnFamilyOptions`	`build(java.lang.String[] keys, java.lang.String[] values)` Construct a subclass instance of `AbstractMutableOptions`.
`CompressionType`	`compressionType()` Compress blocks using the specified compression algorithm.
`boolean`	`disableAutoCompactions()` Disable automatic compactions.
`boolean`	`enableBlobFiles()` When set, large values (blobs) are written to separate blob files, and only pointers to them are stored in SST files.
`boolean`	`enableBlobGarbageCollection()` Query whether garbage collection of blobs is enabled.Blob GC is performed as part of compaction.
`double`	`experimentalMempurgeThreshold()` Threshold used in the MemPurge (memtable garbage collection) feature.
`long`	`hardPendingCompactionBytesLimit()` All writes are stopped if estimated bytes needed to be compaction exceed this threshold.
`long`	`inplaceUpdateNumLocks()` Number of locks used for inplace update Default: 10000, if inplace_update_support = true, else 0.
`int`	`level0FileNumCompactionTrigger()` Number of files to trigger level-0 compaction.
`int`	`level0SlowdownWritesTrigger()` Soft limit on number of level-0 files.
`int`	`level0StopWritesTrigger()` Maximum number of level-0 files.
`long`	`maxBytesForLevelBase()` The upper-bound of the total size of level-1 files in bytes.
`double`	`maxBytesForLevelMultiplier()` The ratio between the total size of level-(L+1) files and the total size of level-L files for all L.
`int[]`	`maxBytesForLevelMultiplierAdditional()` Different max-size multipliers for different levels.
`long`	`maxCompactionBytes()` We try to limit number of bytes in one compaction to be lower than this threshold.
`long`	`maxSequentialSkipInIterations()` An iteration->Next() sequentially skips over keys with the same user-key unless this option is set.
`long`	`maxSuccessiveMerges()` Maximum number of successive merge operations on a key in the memtable.
`int`	`maxWriteBufferNumber()` Returns maximum number of write buffers.
`long`	`memtableHugePageSize()` Page size for huge page TLB for bloom in memtable.
`double`	`memtablePrefixBloomSizeRatio()` if prefix_extractor is set and memtable_prefix_bloom_size_ratio is not 0, create prefix bloom for memtable with the size of write_buffer_size * memtable_prefix_bloom_size_ratio.
`boolean`	`memtableWholeKeyFiltering()` Returns whether whole key bloom filter is enabled in memtable
`long`	`minBlobSize()` Get the size of the smallest value to be stored separately in a blob file.
`boolean`	`paranoidFileChecks()` After writing every SST file, reopen it and read all the keys.
`long`	`periodicCompactionSeconds()` Get the periodicCompactionSeconds.
`PrepopulateBlobCache`	`prepopulateBlobCache()` Get the prepopulate blob cache option.
`boolean`	`reportBgIoStats()` Determine whether IO stats in compactions and flushes are being measured
`protected MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`self()`
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setArenaBlockSize(long arenaBlockSize)` The size of one block in arena memory allocation.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setBlobCompactionReadaheadSize(long blobCompactionReadaheadSize)` Set compaction readahead for blob files.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setBlobCompressionType(CompressionType compressionType)` Set the compression algorithm to use for large values stored in blob files.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setBlobFileSize(long blobFileSize)` Set the size limit for blob files.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setBlobFileStartingLevel(int blobFileStartingLevel)` Set a certain LSM tree level to enable blob files.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setBlobGarbageCollectionAgeCutoff(double blobGarbageCollectionAgeCutoff)` Set cutoff in terms of blob file age for garbage collection.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setBlobGarbageCollectionForceThreshold(double blobGarbageCollectionForceThreshold)` If the ratio of garbage in the oldest blob files exceeds this threshold, targeted compactions are scheduled in order to force garbage collecting the blob files in question, assuming they are all eligible based on the value of `AdvancedMutableColumnFamilyOptionsInterface.blobGarbageCollectionAgeCutoff()` above.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setCompressionType(CompressionType compressionType)` Compress blocks using the specified compression algorithm.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setDisableAutoCompactions(boolean disableAutoCompactions)` Disable automatic compactions.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setEnableBlobFiles(boolean enableBlobFiles)` When set, large values (blobs) are written to separate blob files, and only pointers to them are stored in SST files.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setEnableBlobGarbageCollection(boolean enableBlobGarbageCollection)` Enable/disable garbage collection of blobs.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setExperimentalMempurgeThreshold(double experimentalMempurgeThreshold)` Threshold used in the MemPurge (memtable garbage collection) feature.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setHardPendingCompactionBytesLimit(long hardPendingCompactionBytesLimit)` All writes are stopped if estimated bytes needed to be compaction exceed this threshold.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setInplaceUpdateNumLocks(long inplaceUpdateNumLocks)` Number of locks used for inplace update Default: 10000, if inplace_update_support = true, else 0.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setLevel0FileNumCompactionTrigger(int level0FileNumCompactionTrigger)` Number of files to trigger level-0 compaction.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setLevel0SlowdownWritesTrigger(int level0SlowdownWritesTrigger)` Soft limit on number of level-0 files.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setLevel0StopWritesTrigger(int level0StopWritesTrigger)` Maximum number of level-0 files.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setMaxBytesForLevelBase(long maxBytesForLevelBase)` The upper-bound of the total size of level-1 files in bytes.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setMaxBytesForLevelMultiplier(double maxBytesForLevelMultiplier)` The ratio between the total size of level-(L+1) files and the total size of level-L files for all L.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setMaxBytesForLevelMultiplierAdditional(int[] maxBytesForLevelMultiplierAdditional)` Different max-size multipliers for different levels.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setMaxCompactionBytes(long maxCompactionBytes)` We try to limit number of bytes in one compaction to be lower than this threshold.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setMaxSequentialSkipInIterations(long maxSequentialSkipInIterations)` An iteration->Next() sequentially skips over keys with the same user-key unless this option is set.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setMaxSuccessiveMerges(long maxSuccessiveMerges)` Maximum number of successive merge operations on a key in the memtable.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setMaxWriteBufferNumber(int maxWriteBufferNumber)` The maximum number of write buffers that are built up in memory.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setMemtableHugePageSize(long memtableHugePageSize)` Page size for huge page TLB for bloom in memtable.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setMemtablePrefixBloomSizeRatio(double memtablePrefixBloomSizeRatio)` if prefix_extractor is set and memtable_prefix_bloom_size_ratio is not 0, create prefix bloom for memtable with the size of write_buffer_size * memtable_prefix_bloom_size_ratio.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setMemtableWholeKeyFiltering(boolean memtableWholeKeyFiltering)` Enable whole key bloom filter in memtable.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setMinBlobSize(long minBlobSize)` Set the size of the smallest value to be stored separately in a blob file.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setParanoidFileChecks(boolean paranoidFileChecks)` After writing every SST file, reopen it and read all the keys.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setPeriodicCompactionSeconds(long periodicCompactionSeconds)` Files older than this value will be picked up for compaction, and re-written to the same level as they were before.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setPrepopulateBlobCache(PrepopulateBlobCache prepopulateBlobCache)` Set a certain prepopulate blob cache option.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setReportBgIoStats(boolean reportBgIoStats)` Measure IO stats in compactions and flushes, if true.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setSoftPendingCompactionBytesLimit(long softPendingCompactionBytesLimit)` All writes will be slowed down to at least delayed_write_rate if estimated bytes needed to be compaction exceed this threshold.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setTargetFileSizeBase(long targetFileSizeBase)` The target file size for compaction.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setTargetFileSizeMultiplier(int targetFileSizeMultiplier)` targetFileSizeMultiplier defines the size ratio between a level-L file and level-(L+1) file.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setTtl(long ttl)` Non-bottom-level files older than TTL will go through the compaction process.
`MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder`	`setWriteBufferSize(long writeBufferSize)` Amount of data to build up in memory (backed by an unsorted log on disk) before converting to a sorted on-disk file.
`long`	`softPendingCompactionBytesLimit()` All writes will be slowed down to at least delayed_write_rate if estimated bytes needed to be compaction exceed this threshold.
`long`	`targetFileSizeBase()` The target file size for compaction.
`int`	`targetFileSizeMultiplier()` targetFileSizeMultiplier defines the size ratio between a level-(L+1) file and level-L file.
`long`	`ttl()` Get the TTL for Non-bottom-level files that will go through the compaction process.
`long`	`writeBufferSize()` Return size of write buffer size.

从类继承的方法 org.rocksdb.AbstractMutableOptions.AbstractMutableOptionsBuilder
build, fromParsed, getBoolean, getDouble, getEnum, getInt, getIntArray, getLong, getUnknown, setBoolean, setDouble, setEnum, setInt, setIntArray, setLong

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 方法详细资料
  - self
```
protected MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder self()
```
    指定者:
    
    self 在类中 AbstractMutableOptions.AbstractMutableOptionsBuilder<MutableColumnFamilyOptions,MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder,org.rocksdb.MutableColumnFamilyOptions.MutableColumnFamilyOptionKey>
  - allKeys
```
protected java.util.Map<java.lang.String,org.rocksdb.MutableColumnFamilyOptions.MutableColumnFamilyOptionKey> allKeys()
```
    从类复制的说明: AbstractMutableOptions.AbstractMutableOptionsBuilder
    
    Get all the possible keys
    
    指定者:
    
    allKeys 在类中 AbstractMutableOptions.AbstractMutableOptionsBuilder<MutableColumnFamilyOptions,MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder,org.rocksdb.MutableColumnFamilyOptions.MutableColumnFamilyOptionKey>
    
    返回:
    
    A map of all keys, indexed by name.
  - build
```
protected MutableColumnFamilyOptions build(java.lang.String[] keys,
                                           java.lang.String[] values)
```
    从类复制的说明: AbstractMutableOptions.AbstractMutableOptionsBuilder
    
    Construct a subclass instance of AbstractMutableOptions.
    
    指定者:
    
    build 在类中 AbstractMutableOptions.AbstractMutableOptionsBuilder<MutableColumnFamilyOptions,MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder,org.rocksdb.MutableColumnFamilyOptions.MutableColumnFamilyOptionKey>
    
    参数:
    
    keys - the keys
    
    values - the values
    
    返回:
    
    an instance of the options.
  - setWriteBufferSize
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setWriteBufferSize(long writeBufferSize)
```
    从接口复制的说明: MutableColumnFamilyOptionsInterface
    
    Amount of data to build up in memory (backed by an unsorted log on disk) before converting to a sorted on-disk file.
    Larger values increase performance, especially during bulk loads. Up to max_write_buffer_number write buffers may be held in memory at the same time, so you may wish to adjust this parameter to control memory usage.
    Also, a larger write buffer will result in a longer recovery time the next time the database is opened.
    Default: 64MB
    
    指定者:
    
    setWriteBufferSize 在接口中 MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    writeBufferSize - the size of write buffer.
    
    返回:
    
    the instance of the current object.
  - writeBufferSize
```
public long writeBufferSize()
```
    从接口复制的说明: MutableColumnFamilyOptionsInterface
    
    Return size of write buffer size.
    
    指定者:
    
    writeBufferSize 在接口中 MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    size of write buffer.
    
    另请参阅:
    
    MutableColumnFamilyOptionsInterface.setWriteBufferSize(long)
  - setArenaBlockSize
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setArenaBlockSize(long arenaBlockSize)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    The size of one block in arena memory allocation. If ≤ 0, a proper value is automatically calculated (usually 1/10 of writer_buffer_size).
    There are two additional restriction of the specified size: (1) size should be in the range of [4096, 2 << 30] and (2) be the multiple of the CPU word (which helps with the memory alignment).
    We'll automatically check and adjust the size number to make sure it conforms to the restrictions. Default: 0
    
    指定者:
    
    setArenaBlockSize 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    arenaBlockSize - the size of an arena block
    
    返回:
    
    the reference to the current options.
  - arenaBlockSize
```
public long arenaBlockSize()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    The size of one block in arena memory allocation. If ≤ 0, a proper value is automatically calculated (usually 1/10 of writer_buffer_size).
    There are two additional restriction of the specified size: (1) size should be in the range of [4096, 2 << 30] and (2) be the multiple of the CPU word (which helps with the memory alignment).
    We'll automatically check and adjust the size number to make sure it conforms to the restrictions. Default: 0
    
    指定者:
    
    arenaBlockSize 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the size of an arena block
  - setMemtablePrefixBloomSizeRatio
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setMemtablePrefixBloomSizeRatio(double memtablePrefixBloomSizeRatio)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    if prefix_extractor is set and memtable_prefix_bloom_size_ratio is not 0, create prefix bloom for memtable with the size of write_buffer_size * memtable_prefix_bloom_size_ratio. If it is larger than 0.25, it is sanitized to 0.25.
    Default: 0 (disabled)
    
    指定者:
    
    setMemtablePrefixBloomSizeRatio 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    memtablePrefixBloomSizeRatio - the ratio of memtable used by the bloom filter, 0 means no bloom filter
    
    返回:
    
    the reference to the current options.
  - memtablePrefixBloomSizeRatio
```
public double memtablePrefixBloomSizeRatio()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    if prefix_extractor is set and memtable_prefix_bloom_size_ratio is not 0, create prefix bloom for memtable with the size of write_buffer_size * memtable_prefix_bloom_size_ratio. If it is larger than 0.25, it is sanitized to 0.25.
    Default: 0 (disabled)
    
    指定者:
    
    memtablePrefixBloomSizeRatio 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the ratio of memtable used by the bloom filter
  - setMemtableWholeKeyFiltering
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setMemtableWholeKeyFiltering(boolean memtableWholeKeyFiltering)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Enable whole key bloom filter in memtable. Note this will only take effect if memtable_prefix_bloom_size_ratio is not 0. Enabling whole key filtering can potentially reduce CPU usage for point-look-ups.
    Default: false (disabled)
    
    指定者:
    
    setMemtableWholeKeyFiltering 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    memtableWholeKeyFiltering - true if whole key bloom filter is enabled in memtable
    
    返回:
    
    the reference to the current options.
  - memtableWholeKeyFiltering
```
public boolean memtableWholeKeyFiltering()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Returns whether whole key bloom filter is enabled in memtable
    
    指定者:
    
    memtableWholeKeyFiltering 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    true if whole key bloom filter is enabled in memtable
  - setMemtableHugePageSize
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setMemtableHugePageSize(long memtableHugePageSize)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Page size for huge page TLB for bloom in memtable. If ≤ 0, not allocate from huge page TLB but from malloc. Need to reserve huge pages for it to be allocated. For example: sysctl -w vm.nr_hugepages=20 See linux doc Documentation/vm/hugetlbpage.txt
    
    指定者:
    
    setMemtableHugePageSize 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    memtableHugePageSize - The page size of the huge page tlb
    
    返回:
    
    the reference to the current options.
  - memtableHugePageSize
```
public long memtableHugePageSize()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Page size for huge page TLB for bloom in memtable. If ≤ 0, not allocate from huge page TLB but from malloc. Need to reserve huge pages for it to be allocated. For example: sysctl -w vm.nr_hugepages=20 See linux doc Documentation/vm/hugetlbpage.txt
    
    指定者:
    
    memtableHugePageSize 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    The page size of the huge page tlb
  - setMaxSuccessiveMerges
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setMaxSuccessiveMerges(long maxSuccessiveMerges)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Maximum number of successive merge operations on a key in the memtable.
    When a merge operation is added to the memtable and the maximum number of successive merges is reached, the value of the key will be calculated and inserted into the memtable instead of the merge operation. This will ensure that there are never more than max_successive_merges merge operations in the memtable.
    Default: 0 (disabled)
    
    指定者:
    
    setMaxSuccessiveMerges 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    maxSuccessiveMerges - the maximum number of successive merges.
    
    返回:
    
    the reference to the current options.
  - maxSuccessiveMerges
```
public long maxSuccessiveMerges()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Maximum number of successive merge operations on a key in the memtable.
    When a merge operation is added to the memtable and the maximum number of successive merges is reached, the value of the key will be calculated and inserted into the memtable instead of the merge operation. This will ensure that there are never more than max_successive_merges merge operations in the memtable.
    Default: 0 (disabled)
    
    指定者:
    
    maxSuccessiveMerges 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the maximum number of successive merges.
  - setMaxWriteBufferNumber
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setMaxWriteBufferNumber(int maxWriteBufferNumber)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    The maximum number of write buffers that are built up in memory. The default is 2, so that when 1 write buffer is being flushed to storage, new writes can continue to the other write buffer. Default: 2
    
    指定者:
    
    setMaxWriteBufferNumber 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    maxWriteBufferNumber - maximum number of write buffers.
    
    返回:
    
    the instance of the current options.
  - maxWriteBufferNumber
```
public int maxWriteBufferNumber()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Returns maximum number of write buffers.
    
    指定者:
    
    maxWriteBufferNumber 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    maximum number of write buffers.
    
    另请参阅:
    
    AdvancedMutableColumnFamilyOptionsInterface.setMaxWriteBufferNumber(int)
  - setInplaceUpdateNumLocks
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setInplaceUpdateNumLocks(long inplaceUpdateNumLocks)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Number of locks used for inplace update Default: 10000, if inplace_update_support = true, else 0.
    
    指定者:
    
    setInplaceUpdateNumLocks 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    inplaceUpdateNumLocks - the number of locks used for inplace updates.
    
    返回:
    
    the reference to the current options.
  - inplaceUpdateNumLocks
```
public long inplaceUpdateNumLocks()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Number of locks used for inplace update Default: 10000, if inplace_update_support = true, else 0.
    
    指定者:
    
    inplaceUpdateNumLocks 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the number of locks used for inplace update.
  - setExperimentalMempurgeThreshold
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setExperimentalMempurgeThreshold(double experimentalMempurgeThreshold)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Threshold used in the MemPurge (memtable garbage collection) feature. A value of 0.0 corresponds to no MemPurge, a value of 1.0 will trigger a MemPurge as often as possible.
    Default: 0.0 (disabled)
    
    指定者:
    
    setExperimentalMempurgeThreshold 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    experimentalMempurgeThreshold - the threshold used by the MemPurge decider.
    
    返回:
    
    the reference to the current options.
  - experimentalMempurgeThreshold
```
public double experimentalMempurgeThreshold()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Threshold used in the MemPurge (memtable garbage collection) feature. A value of 0.0 corresponds to no MemPurge, a value of 1.0 will trigger a MemPurge as often as possible.
    Default: 0 (disabled)
    
    指定者:
    
    experimentalMempurgeThreshold 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the threshold used by the MemPurge decider
  - setDisableAutoCompactions
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setDisableAutoCompactions(boolean disableAutoCompactions)
```
    从接口复制的说明: MutableColumnFamilyOptionsInterface
    
    Disable automatic compactions. Manual compactions can still be issued on this column family
    
    指定者:
    
    setDisableAutoCompactions 在接口中 MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    disableAutoCompactions - true if auto-compactions are disabled.
    
    返回:
    
    the reference to the current option.
  - disableAutoCompactions
```
public boolean disableAutoCompactions()
```
    从接口复制的说明: MutableColumnFamilyOptionsInterface
    
    Disable automatic compactions. Manual compactions can still be issued on this column family
    
    指定者:
    
    disableAutoCompactions 在接口中 MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    true if auto-compactions are disabled.
  - setSoftPendingCompactionBytesLimit
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setSoftPendingCompactionBytesLimit(long softPendingCompactionBytesLimit)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    All writes will be slowed down to at least delayed_write_rate if estimated bytes needed to be compaction exceed this threshold.
    Default: 64GB
    
    指定者:
    
    setSoftPendingCompactionBytesLimit 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    softPendingCompactionBytesLimit - The soft limit to impose on compaction
    
    返回:
    
    the reference to the current options.
  - softPendingCompactionBytesLimit
```
public long softPendingCompactionBytesLimit()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    All writes will be slowed down to at least delayed_write_rate if estimated bytes needed to be compaction exceed this threshold.
    Default: 64GB
    
    指定者:
    
    softPendingCompactionBytesLimit 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    The soft limit to impose on compaction
  - setHardPendingCompactionBytesLimit
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setHardPendingCompactionBytesLimit(long hardPendingCompactionBytesLimit)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    All writes are stopped if estimated bytes needed to be compaction exceed this threshold.
    Default: 256GB
    
    指定者:
    
    setHardPendingCompactionBytesLimit 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    hardPendingCompactionBytesLimit - The hard limit to impose on compaction
    
    返回:
    
    the reference to the current options.
  - hardPendingCompactionBytesLimit
```
public long hardPendingCompactionBytesLimit()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    All writes are stopped if estimated bytes needed to be compaction exceed this threshold.
    Default: 256GB
    
    指定者:
    
    hardPendingCompactionBytesLimit 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    The hard limit to impose on compaction
  - setLevel0FileNumCompactionTrigger
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setLevel0FileNumCompactionTrigger(int level0FileNumCompactionTrigger)
```
    从接口复制的说明: MutableColumnFamilyOptionsInterface
    
    Number of files to trigger level-0 compaction. A value < 0 means that level-0 compaction will not be triggered by number of files at all.
    Default: 4
    
    指定者:
    
    setLevel0FileNumCompactionTrigger 在接口中 MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    level0FileNumCompactionTrigger - The number of files to trigger level-0 compaction
    
    返回:
    
    the reference to the current option.
  - level0FileNumCompactionTrigger
```
public int level0FileNumCompactionTrigger()
```
    从接口复制的说明: MutableColumnFamilyOptionsInterface
    
    Number of files to trigger level-0 compaction. A value < 0 means that level-0 compaction will not be triggered by number of files at all.
    Default: 4
    
    指定者:
    
    level0FileNumCompactionTrigger 在接口中 MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    The number of files to trigger
  - setLevel0SlowdownWritesTrigger
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setLevel0SlowdownWritesTrigger(int level0SlowdownWritesTrigger)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Soft limit on number of level-0 files. We start slowing down writes at this point. A value < 0 means that no writing slow down will be triggered by number of files in level-0.
    
    指定者:
    
    setLevel0SlowdownWritesTrigger 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    level0SlowdownWritesTrigger - The soft limit on the number of level-0 files
    
    返回:
    
    the reference to the current options.
  - level0SlowdownWritesTrigger
```
public int level0SlowdownWritesTrigger()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Soft limit on number of level-0 files. We start slowing down writes at this point. A value < 0 means that no writing slow down will be triggered by number of files in level-0.
    
    指定者:
    
    level0SlowdownWritesTrigger 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    The soft limit on the number of level-0 files
  - setLevel0StopWritesTrigger
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setLevel0StopWritesTrigger(int level0StopWritesTrigger)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Maximum number of level-0 files. We stop writes at this point.
    
    指定者:
    
    setLevel0StopWritesTrigger 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    level0StopWritesTrigger - The maximum number of level-0 files
    
    返回:
    
    the reference to the current options.
  - level0StopWritesTrigger
```
public int level0StopWritesTrigger()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Maximum number of level-0 files. We stop writes at this point.
    
    指定者:
    
    level0StopWritesTrigger 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    The maximum number of level-0 files
  - setMaxCompactionBytes
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setMaxCompactionBytes(long maxCompactionBytes)
```
    从接口复制的说明: MutableColumnFamilyOptionsInterface
    
    We try to limit number of bytes in one compaction to be lower than this threshold. But it's not guaranteed. Value 0 will be sanitized.
    
    指定者:
    
    setMaxCompactionBytes 在接口中 MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    maxCompactionBytes - max bytes in a compaction
    
    返回:
    
    the reference to the current option.
    
    另请参阅:
    
    MutableColumnFamilyOptionsInterface.maxCompactionBytes()
  - maxCompactionBytes
```
public long maxCompactionBytes()
```
    从接口复制的说明: MutableColumnFamilyOptionsInterface
    
    We try to limit number of bytes in one compaction to be lower than this threshold. But it's not guaranteed. Value 0 will be sanitized.
    
    指定者:
    
    maxCompactionBytes 在接口中 MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the maximum number of bytes in for a compaction.
    
    另请参阅:
    
    MutableColumnFamilyOptionsInterface.setMaxCompactionBytes(long)
  - setTargetFileSizeBase
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setTargetFileSizeBase(long targetFileSizeBase)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    The target file size for compaction. This targetFileSizeBase determines a level-1 file size. Target file size for level L can be calculated by targetFileSizeBase * (targetFileSizeMultiplier ^ (L-1)) For example, if targetFileSizeBase is 2MB and target_file_size_multiplier is 10, then each file on level-1 will be 2MB, and each file on level 2 will be 20MB, and each file on level-3 will be 200MB. by default targetFileSizeBase is 64MB.
    
    指定者:
    
    setTargetFileSizeBase 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    targetFileSizeBase - the target size of a level-0 file.
    
    返回:
    
    the reference to the current options.
    
    另请参阅:
    
    AdvancedMutableColumnFamilyOptionsInterface.setTargetFileSizeMultiplier(int)
  - targetFileSizeBase
```
public long targetFileSizeBase()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    The target file size for compaction. This targetFileSizeBase determines a level-1 file size. Target file size for level L can be calculated by targetFileSizeBase * (targetFileSizeMultiplier ^ (L-1)) For example, if targetFileSizeBase is 2MB and target_file_size_multiplier is 10, then each file on level-1 will be 2MB, and each file on level 2 will be 20MB, and each file on level-3 will be 200MB. by default targetFileSizeBase is 64MB.
    
    指定者:
    
    targetFileSizeBase 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the target size of a level-0 file.
    
    另请参阅:
    
    AdvancedMutableColumnFamilyOptionsInterface.targetFileSizeMultiplier()
  - setTargetFileSizeMultiplier
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setTargetFileSizeMultiplier(int targetFileSizeMultiplier)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    targetFileSizeMultiplier defines the size ratio between a level-L file and level-(L+1) file. By default target_file_size_multiplier is 1, meaning files in different levels have the same target.
    
    指定者:
    
    setTargetFileSizeMultiplier 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    targetFileSizeMultiplier - the size ratio between a level-(L+1) file and level-L file.
    
    返回:
    
    the reference to the current options.
  - targetFileSizeMultiplier
```
public int targetFileSizeMultiplier()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    targetFileSizeMultiplier defines the size ratio between a level-(L+1) file and level-L file. By default targetFileSizeMultiplier is 1, meaning files in different levels have the same target.
    
    指定者:
    
    targetFileSizeMultiplier 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the size ratio between a level-(L+1) file and level-L file.
  - setMaxBytesForLevelBase
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setMaxBytesForLevelBase(long maxBytesForLevelBase)
```
    从接口复制的说明: MutableColumnFamilyOptionsInterface
    
    The upper-bound of the total size of level-1 files in bytes. Maximum number of bytes for level L can be calculated as (maxBytesForLevelBase) * (maxBytesForLevelMultiplier ^ (L-1)) For example, if maxBytesForLevelBase is 20MB, and if max_bytes_for_level_multiplier is 10, total data size for level-1 will be 200MB, total file size for level-2 will be 2GB, and total file size for level-3 will be 20GB. by default 'maxBytesForLevelBase' is 256MB.
    
    指定者:
    
    setMaxBytesForLevelBase 在接口中 MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    maxBytesForLevelBase - maximum bytes for level base.
    
    返回:
    
    the reference to the current option.
    See AdvancedMutableColumnFamilyOptionsInterface.setMaxBytesForLevelMultiplier(double)
  - maxBytesForLevelBase
```
public long maxBytesForLevelBase()
```
    从接口复制的说明: MutableColumnFamilyOptionsInterface
    
    The upper-bound of the total size of level-1 files in bytes. Maximum number of bytes for level L can be calculated as (maxBytesForLevelBase) * (maxBytesForLevelMultiplier ^ (L-1)) For example, if maxBytesForLevelBase is 20MB, and if max_bytes_for_level_multiplier is 10, total data size for level-1 will be 200MB, total file size for level-2 will be 2GB, and total file size for level-3 will be 20GB. by default 'maxBytesForLevelBase' is 256MB.
    
    指定者:
    
    maxBytesForLevelBase 在接口中 MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the upper-bound of the total size of level-1 files in bytes.
    See AdvancedMutableColumnFamilyOptionsInterface.maxBytesForLevelMultiplier()
  - setMaxBytesForLevelMultiplier
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setMaxBytesForLevelMultiplier(double maxBytesForLevelMultiplier)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    The ratio between the total size of level-(L+1) files and the total size of level-L files for all L. DEFAULT: 10
    
    指定者:
    
    setMaxBytesForLevelMultiplier 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    maxBytesForLevelMultiplier - the ratio between the total size of level-(L+1) files and the total size of level-L files for all L.
    
    返回:
    
    the reference to the current options.
    See MutableColumnFamilyOptionsInterface.setMaxBytesForLevelBase(long)
  - maxBytesForLevelMultiplier
```
public double maxBytesForLevelMultiplier()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    The ratio between the total size of level-(L+1) files and the total size of level-L files for all L. DEFAULT: 10
    
    指定者:
    
    maxBytesForLevelMultiplier 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the ratio between the total size of level-(L+1) files and the total size of level-L files for all L.
    See MutableColumnFamilyOptionsInterface.maxBytesForLevelBase()
  - setMaxBytesForLevelMultiplierAdditional
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setMaxBytesForLevelMultiplierAdditional(int[] maxBytesForLevelMultiplierAdditional)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Different max-size multipliers for different levels. These are multiplied by max_bytes_for_level_multiplier to arrive at the max-size of each level.
    Default: 1
    
    指定者:
    
    setMaxBytesForLevelMultiplierAdditional 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    maxBytesForLevelMultiplierAdditional - The max-size multipliers for each level
    
    返回:
    
    the reference to the current options.
  - maxBytesForLevelMultiplierAdditional
```
public int[] maxBytesForLevelMultiplierAdditional()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Different max-size multipliers for different levels. These are multiplied by max_bytes_for_level_multiplier to arrive at the max-size of each level.
    Default: 1
    
    指定者:
    
    maxBytesForLevelMultiplierAdditional 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    The max-size multipliers for each level
  - setMaxSequentialSkipInIterations
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setMaxSequentialSkipInIterations(long maxSequentialSkipInIterations)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    An iteration->Next() sequentially skips over keys with the same user-key unless this option is set. This number specifies the number of keys (with the same userkey) that will be sequentially skipped before a reseek is issued. Default: 8
    
    指定者:
    
    setMaxSequentialSkipInIterations 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    maxSequentialSkipInIterations - the number of keys could be skipped in an iteration.
    
    返回:
    
    the reference to the current options.
  - maxSequentialSkipInIterations
```
public long maxSequentialSkipInIterations()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    An iteration->Next() sequentially skips over keys with the same user-key unless this option is set. This number specifies the number of keys (with the same userkey) that will be sequentially skipped before a reseek is issued. Default: 8
    
    指定者:
    
    maxSequentialSkipInIterations 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the number of keys could be skipped in an iteration.
  - setParanoidFileChecks
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setParanoidFileChecks(boolean paranoidFileChecks)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    After writing every SST file, reopen it and read all the keys.
    Default: false
    
    指定者:
    
    setParanoidFileChecks 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    paranoidFileChecks - true to enable paranoid file checks
    
    返回:
    
    the reference to the current options.
  - paranoidFileChecks
```
public boolean paranoidFileChecks()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    After writing every SST file, reopen it and read all the keys.
    Default: false
    
    指定者:
    
    paranoidFileChecks 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    true if paranoid file checks are enabled
  - setCompressionType
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setCompressionType(CompressionType compressionType)
```
    从接口复制的说明: MutableColumnFamilyOptionsInterface
    
    Compress blocks using the specified compression algorithm. This parameter can be changed dynamically.
    Default: SNAPPY_COMPRESSION, which gives lightweight but fast compression.
    
    指定者:
    
    setCompressionType 在接口中 MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    compressionType - Compression Type.
    
    返回:
    
    the reference to the current option.
  - compressionType
```
public CompressionType compressionType()
```
    从接口复制的说明: MutableColumnFamilyOptionsInterface
    
    Compress blocks using the specified compression algorithm. This parameter can be changed dynamically.
    Default: SNAPPY_COMPRESSION, which gives lightweight but fast compression.
    
    指定者:
    
    compressionType 在接口中 MutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    Compression type.
  - setReportBgIoStats
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setReportBgIoStats(boolean reportBgIoStats)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Measure IO stats in compactions and flushes, if true.
    Default: false
    
    指定者:
    
    setReportBgIoStats 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    reportBgIoStats - true to enable reporting
    
    返回:
    
    the reference to the current options.
  - reportBgIoStats
```
public boolean reportBgIoStats()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Determine whether IO stats in compactions and flushes are being measured
    
    指定者:
    
    reportBgIoStats 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    true if reporting is enabled
  - setTtl
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setTtl(long ttl)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Non-bottom-level files older than TTL will go through the compaction process. This needs MutableDBOptionsInterface.maxOpenFiles() to be set to -1.
    Enabled only for level compaction for now.
    Default: 0 (disabled)
    Dynamically changeable through RocksDB.setOptions(ColumnFamilyHandle, MutableColumnFamilyOptions).
    
    指定者:
    
    setTtl 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    ttl - the time-to-live.
    
    返回:
    
    the reference to the current options.
  - ttl
```
public long ttl()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Get the TTL for Non-bottom-level files that will go through the compaction process.
    See AdvancedMutableColumnFamilyOptionsInterface.setTtl(long).
    
    指定者:
    
    ttl 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the time-to-live.
  - setPeriodicCompactionSeconds
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setPeriodicCompactionSeconds(long periodicCompactionSeconds)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Files older than this value will be picked up for compaction, and re-written to the same level as they were before. One main use of the feature is to make sure a file goes through compaction filters periodically. Users can also use the feature to clear up SST files using old format.
    A file's age is computed by looking at file_creation_time or creation_time table properties in order, if they have valid non-zero values; if not, the age is based on the file's last modified time (given by the underlying Env).
    Supported in Level and FIFO compaction. In FIFO compaction, this option has the same meaning as TTL and whichever stricter will be used. Pre-req: max_open_file == -1. unit: seconds. Ex: 7 days = 7 * 24 * 60 * 60
    Values: 0: Turn off Periodic compactions. UINT64_MAX - 1 (i.e 0xfffffffffffffffe): Let RocksDB control this feature as needed. For now, RocksDB will change this value to 30 days (i.e 30 * 24 * 60 * 60) so that every file goes through the compaction process at least once every 30 days if not compacted sooner. In FIFO compaction, since the option has the same meaning as ttl, when this value is left default, and ttl is left to 0, 30 days will be used. Otherwise, min(ttl, periodic_compaction_seconds) will be used.
    Default: 0xfffffffffffffffe (allow RocksDB to auto-tune)
    Dynamically changeable through RocksDB.setOptions(ColumnFamilyHandle, MutableColumnFamilyOptions).
    
    指定者:
    
    setPeriodicCompactionSeconds 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    periodicCompactionSeconds - the periodic compaction in seconds.
    
    返回:
    
    the reference to the current options.
  - periodicCompactionSeconds
```
public long periodicCompactionSeconds()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Get the periodicCompactionSeconds.
    See AdvancedMutableColumnFamilyOptionsInterface.setPeriodicCompactionSeconds(long).
    
    指定者:
    
    periodicCompactionSeconds 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the periodic compaction in seconds.
  - setEnableBlobFiles
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setEnableBlobFiles(boolean enableBlobFiles)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    When set, large values (blobs) are written to separate blob files, and only pointers to them are stored in SST files. This can reduce write amplification for large-value use cases at the cost of introducing a level of indirection for reads. See also the options min_blob_size, blob_file_size, blob_compression_type, enable_blob_garbage_collection, and blob_garbage_collection_age_cutoff below.
    Default: false
    Dynamically changeable through RocksDB.setOptions(ColumnFamilyHandle, MutableColumnFamilyOptions).
    
    指定者:
    
    setEnableBlobFiles 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    enableBlobFiles - true iff blob files should be enabled
    
    返回:
    
    the reference to the current options.
  - enableBlobFiles
```
public boolean enableBlobFiles()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    When set, large values (blobs) are written to separate blob files, and only pointers to them are stored in SST files. This can reduce write amplification for large-value use cases at the cost of introducing a level of indirection for reads. See also the options min_blob_size, blob_file_size, blob_compression_type, enable_blob_garbage_collection, and blob_garbage_collection_age_cutoff below.
    Default: false
    Dynamically changeable through RocksDB.setOptions(ColumnFamilyHandle, MutableColumnFamilyOptions).
    
    指定者:
    
    enableBlobFiles 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    true if blob files are enabled
  - setMinBlobSize
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setMinBlobSize(long minBlobSize)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Set the size of the smallest value to be stored separately in a blob file. Values which have an uncompressed size smaller than this threshold are stored alongside the keys in SST files in the usual fashion. A value of zero for this option means that all values are stored in blob files. Note that enable_blob_files has to be set in order for this option to have any effect.
    Default: 0
    Dynamically changeable through RocksDB.setOptions(ColumnFamilyHandle, MutableColumnFamilyOptions).
    
    指定者:
    
    setMinBlobSize 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    minBlobSize - the size of the smallest value to be stored separately in a blob file
    
    返回:
    
    the reference to the current options.
  - minBlobSize
```
public long minBlobSize()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Get the size of the smallest value to be stored separately in a blob file. Values which have an uncompressed size smaller than this threshold are stored alongside the keys in SST files in the usual fashion. A value of zero for this option means that all values are stored in blob files. Note that enable_blob_files has to be set in order for this option to have any effect.
    Default: 0
    Dynamically changeable through RocksDB.setOptions(ColumnFamilyHandle, MutableColumnFamilyOptions).
    
    指定者:
    
    minBlobSize 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the current minimum size of value which is stored separately in a blob
  - setBlobFileSize
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setBlobFileSize(long blobFileSize)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Set the size limit for blob files. When writing blob files, a new file is opened once this limit is reached. Note that enable_blob_files has to be set in order for this option to have any effect.
    Default: 256 MB
    Dynamically changeable through RocksDB.setOptions(ColumnFamilyHandle, MutableColumnFamilyOptions).
    
    指定者:
    
    setBlobFileSize 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    blobFileSize - the size limit for blob files
    
    返回:
    
    the reference to the current options.
  - blobFileSize
```
public long blobFileSize()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    The size limit for blob files. When writing blob files, a new file is opened once this limit is reached.
    
    指定者:
    
    blobFileSize 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the current size limit for blob files
  - setBlobCompressionType
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setBlobCompressionType(CompressionType compressionType)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Set the compression algorithm to use for large values stored in blob files. Note that enable_blob_files has to be set in order for this option to have any effect.
    Default: no compression
    Dynamically changeable through RocksDB.setOptions(ColumnFamilyHandle, MutableColumnFamilyOptions).
    
    指定者:
    
    setBlobCompressionType 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    compressionType - the compression algorithm to use.
    
    返回:
    
    the reference to the current options.
  - blobCompressionType
```
public CompressionType blobCompressionType()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Get the compression algorithm in use for large values stored in blob files. Note that enable_blob_files has to be set in order for this option to have any effect.
    
    指定者:
    
    blobCompressionType 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the current compression algorithm
  - setEnableBlobGarbageCollection
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setEnableBlobGarbageCollection(boolean enableBlobGarbageCollection)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Enable/disable garbage collection of blobs. Blob GC is performed as part of compaction. Valid blobs residing in blob files older than a cutoff get relocated to new files as they are encountered during compaction, which makes it possible to clean up blob files once they contain nothing but obsolete/garbage blobs. See also blob_garbage_collection_age_cutoff below.
    Default: false
    
    指定者:
    
    setEnableBlobGarbageCollection 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    enableBlobGarbageCollection - the new enabled/disabled state of blob garbage collection
    
    返回:
    
    the reference to the current options.
  - enableBlobGarbageCollection
```
public boolean enableBlobGarbageCollection()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Query whether garbage collection of blobs is enabled.Blob GC is performed as part of compaction. Valid blobs residing in blob files older than a cutoff get relocated to new files as they are encountered during compaction, which makes it possible to clean up blob files once they contain nothing but obsolete/garbage blobs. See also blob_garbage_collection_age_cutoff below.
    Default: false
    
    指定者:
    
    enableBlobGarbageCollection 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    true if blob garbage collection is currently enabled.
  - setBlobGarbageCollectionAgeCutoff
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setBlobGarbageCollectionAgeCutoff(double blobGarbageCollectionAgeCutoff)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Set cutoff in terms of blob file age for garbage collection. Blobs in the oldest N blob files will be relocated when encountered during compaction, where N = garbage_collection_cutoff * number_of_blob_files. Note that enable_blob_garbage_collection has to be set in order for this option to have any effect.
    Default: 0.25
    
    指定者:
    
    setBlobGarbageCollectionAgeCutoff 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    blobGarbageCollectionAgeCutoff - the new age cutoff
    
    返回:
    
    the reference to the current options.
  - blobGarbageCollectionAgeCutoff
```
public double blobGarbageCollectionAgeCutoff()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Get cutoff in terms of blob file age for garbage collection. Blobs in the oldest N blob files will be relocated when encountered during compaction, where N = garbage_collection_cutoff * number_of_blob_files. Note that enable_blob_garbage_collection has to be set in order for this option to have any effect.
    Default: 0.25
    
    指定者:
    
    blobGarbageCollectionAgeCutoff 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the current age cutoff for garbage collection
  - setBlobGarbageCollectionForceThreshold
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setBlobGarbageCollectionForceThreshold(double blobGarbageCollectionForceThreshold)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    If the ratio of garbage in the oldest blob files exceeds this threshold, targeted compactions are scheduled in order to force garbage collecting the blob files in question, assuming they are all eligible based on the value of AdvancedMutableColumnFamilyOptionsInterface.blobGarbageCollectionAgeCutoff() above. This option is currently only supported with leveled compactions.
    Note that AdvancedMutableColumnFamilyOptionsInterface.enableBlobGarbageCollection() has to be set in order for this option to have any effect.
    Default: 1.0
    Dynamically changeable through the SetOptions() API
    
    指定者:
    
    setBlobGarbageCollectionForceThreshold 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    blobGarbageCollectionForceThreshold - new value for the threshold
    
    返回:
    
    the reference to the current options
  - blobGarbageCollectionForceThreshold
```
public double blobGarbageCollectionForceThreshold()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Get the current value for the #blobGarbageCollectionForceThreshold
    
    指定者:
    
    blobGarbageCollectionForceThreshold 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the current threshold at which garbage collection of blobs is forced
  - setBlobCompactionReadaheadSize
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setBlobCompactionReadaheadSize(long blobCompactionReadaheadSize)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Set compaction readahead for blob files.
    Default: 0
    Dynamically changeable through RocksDB.setOptions(ColumnFamilyHandle, MutableColumnFamilyOptions).
    
    指定者:
    
    setBlobCompactionReadaheadSize 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    blobCompactionReadaheadSize - the compaction readahead for blob files
    
    返回:
    
    the reference to the current options.
  - blobCompactionReadaheadSize
```
public long blobCompactionReadaheadSize()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Get compaction readahead for blob files.
    
    指定者:
    
    blobCompactionReadaheadSize 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the current compaction readahead for blob files
  - setBlobFileStartingLevel
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setBlobFileStartingLevel(int blobFileStartingLevel)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Set a certain LSM tree level to enable blob files.
    Default: 0
    Dynamically changeable through RocksDB.setOptions(ColumnFamilyHandle, MutableColumnFamilyOptions).
    
    指定者:
    
    setBlobFileStartingLevel 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    blobFileStartingLevel - the starting level to enable blob files
    
    返回:
    
    the reference to the current options.
  - blobFileStartingLevel
```
public int blobFileStartingLevel()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Get the starting LSM tree level to enable blob files.
    Default: 0
    
    指定者:
    
    blobFileStartingLevel 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the current LSM tree level to enable blob files.
  - setPrepopulateBlobCache
```
public MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder setPrepopulateBlobCache(PrepopulateBlobCache prepopulateBlobCache)
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Set a certain prepopulate blob cache option.
    Default: 0
    Dynamically changeable through RocksDB.setOptions(ColumnFamilyHandle, MutableColumnFamilyOptions).
    
    指定者:
    
    setPrepopulateBlobCache 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    参数:
    
    prepopulateBlobCache - prepopulate the blob cache option
    
    返回:
    
    the reference to the current options.
  - prepopulateBlobCache
```
public PrepopulateBlobCache prepopulateBlobCache()
```
    从接口复制的说明: AdvancedMutableColumnFamilyOptionsInterface
    
    Get the prepopulate blob cache option.
    Default: 0
    
    指定者:
    
    prepopulateBlobCache 在接口中 AdvancedMutableColumnFamilyOptionsInterface<MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder>
    
    返回:
    
    the current prepopulate blob cache option.

类 MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder

方法概要

从类继承的方法 org.rocksdb.AbstractMutableOptions.AbstractMutableOptionsBuilder

从类继承的方法 java.lang.Object

方法详细资料

self

allKeys

build

setWriteBufferSize

writeBufferSize

setArenaBlockSize

arenaBlockSize

setMemtablePrefixBloomSizeRatio

memtablePrefixBloomSizeRatio

setMemtableWholeKeyFiltering

memtableWholeKeyFiltering

setMemtableHugePageSize

memtableHugePageSize

setMaxSuccessiveMerges

maxSuccessiveMerges

setMaxWriteBufferNumber

maxWriteBufferNumber

setInplaceUpdateNumLocks

inplaceUpdateNumLocks

setExperimentalMempurgeThreshold

experimentalMempurgeThreshold

setDisableAutoCompactions

disableAutoCompactions

setSoftPendingCompactionBytesLimit

softPendingCompactionBytesLimit

setHardPendingCompactionBytesLimit

hardPendingCompactionBytesLimit

setLevel0FileNumCompactionTrigger

level0FileNumCompactionTrigger

setLevel0SlowdownWritesTrigger

level0SlowdownWritesTrigger

setLevel0StopWritesTrigger

level0StopWritesTrigger

setMaxCompactionBytes

maxCompactionBytes

setTargetFileSizeBase

targetFileSizeBase

setTargetFileSizeMultiplier

targetFileSizeMultiplier

setMaxBytesForLevelBase

maxBytesForLevelBase

setMaxBytesForLevelMultiplier

maxBytesForLevelMultiplier

setMaxBytesForLevelMultiplierAdditional

maxBytesForLevelMultiplierAdditional

setMaxSequentialSkipInIterations

maxSequentialSkipInIterations

setParanoidFileChecks

paranoidFileChecks

setCompressionType

compressionType

setReportBgIoStats

reportBgIoStats

setTtl

ttl

setPeriodicCompactionSeconds

periodicCompactionSeconds

setEnableBlobFiles

enableBlobFiles

setMinBlobSize

minBlobSize

setBlobFileSize

blobFileSize

setBlobCompressionType

blobCompressionType

setEnableBlobGarbageCollection

enableBlobGarbageCollection

setBlobGarbageCollectionAgeCutoff

blobGarbageCollectionAgeCutoff

setBlobGarbageCollectionForceThreshold

blobGarbageCollectionForceThreshold

setBlobCompactionReadaheadSize

blobCompactionReadaheadSize

setBlobFileStartingLevel

blobFileStartingLevel