org.rocksdb

类 CompactRangeOptions

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.AbstractImmutableNativeReference

org.rocksdb.RocksObject

org.rocksdb.CompactRangeOptions

所有已实现的接口:

java.lang.AutoCloseable

public class CompactRangeOptions
extends RocksObject

CompactRangeOptions is used by CompactRange() call. In the documentation of the methods "the compaction" refers to any compaction that is using this CompactRangeOptions.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	CompactRangeOptions.BottommostLevelCompaction
static class	CompactRangeOptions.Timestamp

字段概要

从类继承的字段 org.rocksdb.RocksObject

nativeHandle_

从类继承的字段 org.rocksdb.AbstractImmutableNativeReference

owningHandle_

构造器概要

构造器

构造器和说明
CompactRangeOptions() Construct CompactRangeOptions.

方法概要

限定符和类型	方法和说明
boolean	allowWriteStall() If true, compaction will execute immediately even if doing so would cause the DB to enter write stall mode.
CompactRangeOptions.BottommostLevelCompaction	bottommostLevelCompaction() Returns the policy for compacting the bottommost level
boolean	canceled()
boolean	changeLevel() Returns whether compacted files will be moved to the minimum level capable of holding the data or given level (specified non-negative target_level).
protected void	disposeInternal(long handle)
boolean	exclusiveManualCompaction() Returns whether the compaction is exclusive or other compactions may run concurrently at the same time.
CompactRangeOptions.Timestamp	fullHistoryTSLow()
int	maxSubcompactions() If > 0, it will replace the option in the DBOptions for this compaction
CompactRangeOptions	setAllowWriteStall(boolean allowWriteStall) If true, compaction will execute immediately even if doing so would cause the DB to enter write stall mode.
CompactRangeOptions	setBottommostLevelCompaction(CompactRangeOptions.BottommostLevelCompaction bottommostLevelCompaction) Sets the policy for compacting the bottommost level
CompactRangeOptions	setCanceled(boolean canceled)
CompactRangeOptions	setChangeLevel(boolean changeLevel) Whether compacted files will be moved to the minimum level capable of holding the data or given level (specified non-negative target_level).
CompactRangeOptions	setExclusiveManualCompaction(boolean exclusiveCompaction) Sets whether the compaction is exclusive or other compaction are allowed run concurrently at the same time.
CompactRangeOptions	setFullHistoryTSLow(CompactRangeOptions.Timestamp tsLow)
CompactRangeOptions	setMaxSubcompactions(int maxSubcompactions) If > 0, it will replace the option in the DBOptions for this compaction
CompactRangeOptions	setTargetLevel(int targetLevel) If change_level is true and target_level have non-negative value, compacted files will be moved to target_level.
CompactRangeOptions	setTargetPathId(int targetPathId) Compaction outputs will be placed in options.db_paths[target_path_id].
int	targetLevel() If change_level is true and target_level have non-negative value, compacted files will be moved to target_level.
int	targetPathId() target_path_id for compaction output.

从类继承的方法 org.rocksdb.RocksObject

disposeInternal, getNativeHandle

从类继承的方法 org.rocksdb.AbstractImmutableNativeReference

close, disOwnNativeHandle, isOwningHandle

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

CompactRangeOptions

public CompactRangeOptions()

Construct CompactRangeOptions.

方法详细资料

exclusiveManualCompaction

public boolean exclusiveManualCompaction()

Returns whether the compaction is exclusive or other compactions may run concurrently at the same time.

返回:

true if exclusive, false if concurrent

setExclusiveManualCompaction

public CompactRangeOptions setExclusiveManualCompaction(boolean exclusiveCompaction)

Sets whether the compaction is exclusive or other compaction are allowed run concurrently at the same time.

参数:

exclusiveCompaction - true if compaction should be exclusive

返回:

This CompactRangeOptions

changeLevel

public boolean changeLevel()

Returns whether compacted files will be moved to the minimum level capable of holding the data or given level (specified non-negative target_level).

返回:

true, if compacted files will be moved to the minimum level

setChangeLevel

public CompactRangeOptions setChangeLevel(boolean changeLevel)

Whether compacted files will be moved to the minimum level capable of holding the data or given level (specified non-negative target_level).

参数:

changeLevel - If true, compacted files will be moved to the minimum level

返回:

This CompactRangeOptions

targetLevel

public int targetLevel()

If change_level is true and target_level have non-negative value, compacted files will be moved to target_level.

返回:

The target level for the compacted files

setTargetLevel

public CompactRangeOptions setTargetLevel(int targetLevel)

If change_level is true and target_level have non-negative value, compacted files will be moved to target_level.

参数:

targetLevel - target level for the compacted files

返回:

This CompactRangeOptions

targetPathId

public int targetPathId()

target_path_id for compaction output. Compaction outputs will be placed in options.db_paths[target_path_id].

返回:

target_path_id

setTargetPathId

public CompactRangeOptions setTargetPathId(int targetPathId)

Compaction outputs will be placed in options.db_paths[target_path_id]. Behavior is undefined if target_path_id is out of range.

参数:

targetPathId - target path id

返回:

This CompactRangeOptions

bottommostLevelCompaction

public CompactRangeOptions.BottommostLevelCompaction bottommostLevelCompaction()

Returns the policy for compacting the bottommost level

返回:

The BottommostLevelCompaction policy

setBottommostLevelCompaction

public CompactRangeOptions setBottommostLevelCompaction(CompactRangeOptions.BottommostLevelCompaction bottommostLevelCompaction)

Sets the policy for compacting the bottommost level

参数:

bottommostLevelCompaction - The policy for compacting the bottommost level

返回:

This CompactRangeOptions

allowWriteStall

public boolean allowWriteStall()

If true, compaction will execute immediately even if doing so would cause the DB to enter write stall mode. Otherwise, it'll sleep until load is low enough.

返回:

true if compaction will execute immediately

setAllowWriteStall

public CompactRangeOptions setAllowWriteStall(boolean allowWriteStall)

If true, compaction will execute immediately even if doing so would cause the DB to enter write stall mode. Otherwise, it'll sleep until load is low enough.

参数:

allowWriteStall - true if compaction should execute immediately

返回:

This CompactRangeOptions

maxSubcompactions

public int maxSubcompactions()

If > 0, it will replace the option in the DBOptions for this compaction

返回:

number of subcompactions

setMaxSubcompactions

public CompactRangeOptions setMaxSubcompactions(int maxSubcompactions)

If > 0, it will replace the option in the DBOptions for this compaction

参数:

maxSubcompactions - number of subcompactions

返回:

This CompactRangeOptions

setFullHistoryTSLow

public CompactRangeOptions setFullHistoryTSLow(CompactRangeOptions.Timestamp tsLow)

fullHistoryTSLow

public CompactRangeOptions.Timestamp fullHistoryTSLow()

setCanceled

public CompactRangeOptions setCanceled(boolean canceled)

canceled

public boolean canceled()

disposeInternal

protected final void disposeInternal(long handle)

指定者:

disposeInternal 在类中 RocksObject