MutableColumnFamilyOptionsInterface

所有超级接口:

AdvancedMutableColumnFamilyOptionsInterface<T>

所有已知实现类:

ColumnFamilyOptions, MutableColumnFamilyOptions.MutableColumnFamilyOptionsBuilder, Options
```
public interface MutableColumnFamilyOptionsInterface<T extends MutableColumnFamilyOptionsInterface<T>>
extends AdvancedMutableColumnFamilyOptionsInterface<T>
```

方法概要

所有方法实例方法抽象方法
限定符和类型	方法和说明
`CompressionType`	`compressionType()` Compress blocks using the specified compression algorithm.
`boolean`	`disableAutoCompactions()` Disable automatic compactions.
`int`	`level0FileNumCompactionTrigger()` Number of files to trigger level-0 compaction.
`long`	`maxBytesForLevelBase()` The upper-bound of the total size of level-1 files in bytes.
`long`	`maxCompactionBytes()` We try to limit number of bytes in one compaction to be lower than this threshold.
`T`	`setCompressionType(CompressionType compressionType)` Compress blocks using the specified compression algorithm.
`T`	`setDisableAutoCompactions(boolean disableAutoCompactions)` Disable automatic compactions.
`T`	`setLevel0FileNumCompactionTrigger(int level0FileNumCompactionTrigger)` Number of files to trigger level-0 compaction.
`T`	`setMaxBytesForLevelBase(long maxBytesForLevelBase)` The upper-bound of the total size of level-1 files in bytes.
`T`	`setMaxCompactionBytes(long maxCompactionBytes)` We try to limit number of bytes in one compaction to be lower than this threshold.
`T`	`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`	`writeBufferSize()` Return size of write buffer size.

从接口继承的方法 org.rocksdb.AdvancedMutableColumnFamilyOptionsInterface
arenaBlockSize, blobCompactionReadaheadSize, blobCompressionType, blobFileSize, blobFileStartingLevel, blobGarbageCollectionAgeCutoff, blobGarbageCollectionForceThreshold, enableBlobFiles, enableBlobGarbageCollection, experimentalMempurgeThreshold, hardPendingCompactionBytesLimit, inplaceUpdateNumLocks, level0SlowdownWritesTrigger, level0StopWritesTrigger, maxBytesForLevelMultiplier, maxBytesForLevelMultiplierAdditional, maxSequentialSkipInIterations, maxSuccessiveMerges, maxWriteBufferNumber, memtableHugePageSize, memtablePrefixBloomSizeRatio, memtableWholeKeyFiltering, minBlobSize, paranoidFileChecks, periodicCompactionSeconds, prepopulateBlobCache, reportBgIoStats, setArenaBlockSize, setBlobCompactionReadaheadSize, setBlobCompressionType, setBlobFileSize, setBlobFileStartingLevel, setBlobGarbageCollectionAgeCutoff, setBlobGarbageCollectionForceThreshold, setEnableBlobFiles, setEnableBlobGarbageCollection, setExperimentalMempurgeThreshold, setHardPendingCompactionBytesLimit, setInplaceUpdateNumLocks, setLevel0SlowdownWritesTrigger, setLevel0StopWritesTrigger, setMaxBytesForLevelMultiplier, setMaxBytesForLevelMultiplierAdditional, setMaxSequentialSkipInIterations, setMaxSuccessiveMerges, setMaxWriteBufferNumber, setMemtableHugePageSize, setMemtablePrefixBloomSizeRatio, setMemtableWholeKeyFiltering, setMinBlobSize, setParanoidFileChecks, setPeriodicCompactionSeconds, setPrepopulateBlobCache, setReportBgIoStats, setSoftPendingCompactionBytesLimit, setTargetFileSizeBase, setTargetFileSizeMultiplier, setTtl, softPendingCompactionBytesLimit, targetFileSizeBase, targetFileSizeMultiplier, ttl

- 方法详细资料
  - setWriteBufferSize
```
T 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.
    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
    
    参数:
    
    writeBufferSize - the size of write buffer.
    
    返回:
    
    the instance of the current object.
    
    抛出:
    
    java.lang.IllegalArgumentException - thrown on 32-Bit platforms while overflowing the underlying platform specific value.
  - writeBufferSize
```
long writeBufferSize()
```
    Return size of write buffer size.
    
    返回:
    
    size of write buffer.
    
    另请参阅:
    
    setWriteBufferSize(long)
  - setDisableAutoCompactions
```
T setDisableAutoCompactions(boolean disableAutoCompactions)
```
    Disable automatic compactions. Manual compactions can still be issued on this column family
    
    参数:
    
    disableAutoCompactions - true if auto-compactions are disabled.
    
    返回:
    
    the reference to the current option.
  - disableAutoCompactions
```
boolean disableAutoCompactions()
```
    Disable automatic compactions. Manual compactions can still be issued on this column family
    
    返回:
    
    true if auto-compactions are disabled.
  - setLevel0FileNumCompactionTrigger
```
T setLevel0FileNumCompactionTrigger(int level0FileNumCompactionTrigger)
```
    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
    
    参数:
    
    level0FileNumCompactionTrigger - The number of files to trigger level-0 compaction
    
    返回:
    
    the reference to the current option.
  - level0FileNumCompactionTrigger
```
int level0FileNumCompactionTrigger()
```
    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
    
    返回:
    
    The number of files to trigger
  - setMaxCompactionBytes
```
T setMaxCompactionBytes(long maxCompactionBytes)
```
    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.
    
    参数:
    
    maxCompactionBytes - max bytes in a compaction
    
    返回:
    
    the reference to the current option.
    
    另请参阅:
    
    maxCompactionBytes()
  - maxCompactionBytes
```
long maxCompactionBytes()
```
    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.
    
    返回:
    
    the maximum number of bytes in for a compaction.
    
    另请参阅:
    
    setMaxCompactionBytes(long)
  - setMaxBytesForLevelBase
```
T setMaxBytesForLevelBase(long maxBytesForLevelBase)
```
    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.
    
    参数:
    
    maxBytesForLevelBase - maximum bytes for level base.
    
    返回:
    
    the reference to the current option.
    See AdvancedMutableColumnFamilyOptionsInterface.setMaxBytesForLevelMultiplier(double)
  - maxBytesForLevelBase
```
long maxBytesForLevelBase()
```
    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.
    
    返回:
    
    the upper-bound of the total size of level-1 files in bytes.
    See AdvancedMutableColumnFamilyOptionsInterface.maxBytesForLevelMultiplier()
  - setCompressionType
```
T setCompressionType(CompressionType compressionType)
```
    Compress blocks using the specified compression algorithm. This parameter can be changed dynamically.
    Default: SNAPPY_COMPRESSION, which gives lightweight but fast compression.
    
    参数:
    
    compressionType - Compression Type.
    
    返回:
    
    the reference to the current option.
  - compressionType
```
CompressionType compressionType()
```
    Compress blocks using the specified compression algorithm. This parameter can be changed dynamically.
    Default: SNAPPY_COMPRESSION, which gives lightweight but fast compression.
    
    返回:
    
    Compression type.

接口 MutableColumnFamilyOptionsInterface<T extends MutableColumnFamilyOptionsInterface<T>>

方法概要

从接口继承的方法 org.rocksdb.AdvancedMutableColumnFamilyOptionsInterface

方法详细资料

setWriteBufferSize

writeBufferSize

setDisableAutoCompactions

disableAutoCompactions

setLevel0FileNumCompactionTrigger

level0FileNumCompactionTrigger

setMaxCompactionBytes

maxCompactionBytes

setMaxBytesForLevelBase

maxBytesForLevelBase

setCompressionType

compressionType