org.rocksdb

Class CompactRangeOptions

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.AbstractImmutableNativeReference

org.rocksdb.RocksObject

org.rocksdb.CompactRangeOptions

All Implemented Interfaces:

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.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CompactRangeOptions.BottommostLevelCompaction

Field Summary

Fields inherited from class org.rocksdb.RocksObject

nativeHandle_

Constructor Summary

Constructors

Constructor and Description
CompactRangeOptions() Construct CompactRangeOptions.

Method Summary

Methods

Modifier and Type	Method and Description
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	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.
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	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	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.

Methods inherited from class org.rocksdb.RocksObject

disposeInternal

Methods inherited from class org.rocksdb.AbstractImmutableNativeReference

close, disOwnNativeHandle, isOwningHandle

Methods inherited from class org.rocksdb.AbstractNativeReference

dispose, finalize

Methods inherited from class java.lang.Object

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

Constructor Detail

CompactRangeOptions

public CompactRangeOptions()

Construct CompactRangeOptions.

Method Detail

exclusiveManualCompaction

public boolean exclusiveManualCompaction()

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

Returns:

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.

Parameters:

exclusiveCompaction - true if compaction should be exclusive

Returns:

This CompactRangeOptions

bottommostLevelCompaction

public CompactRangeOptions.BottommostLevelCompaction bottommostLevelCompaction()

Returns the policy for compacting the bottommost level

Returns:

The BottommostLevelCompaction policy

setBottommostLevelCompaction

public CompactRangeOptions setBottommostLevelCompaction(CompactRangeOptions.BottommostLevelCompaction bottommostLevelCompaction)

Sets the policy for compacting the bottommost level

Parameters:

bottommostLevelCompaction - The policy for compacting the bottommost level

Returns:

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).

Returns:

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).

Parameters:

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

Returns:

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.

Returns:

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.

Parameters:

targetLevel - target level for the compacted files

Returns:

This CompactRangeOptions

targetPathId

public int targetPathId()

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

Returns:

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.

Parameters:

targetPathId - target path id

Returns:

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.

Returns:

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.

Parameters:

allowWriteStall - true if compaction should execute immediately

Returns:

This CompactRangeOptions

maxSubcompactions

public int maxSubcompactions()

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

Returns:

number of subcompactions

setMaxSubcompactions

public CompactRangeOptions setMaxSubcompactions(int maxSubcompactions)

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

Parameters:

maxSubcompactions - number of subcompactions

Returns:

This CompactRangeOptions

disposeInternal

protected final void disposeInternal(long handle)

Specified by:

disposeInternal in class RocksObject