org.rocksdb

Class CompactionOptionsFIFO

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.AbstractImmutableNativeReference

org.rocksdb.RocksObject

org.rocksdb.CompactionOptionsFIFO

All Implemented Interfaces:

AutoCloseable

public class CompactionOptionsFIFO
extends RocksObject

Options for FIFO Compaction

Field Summary

Fields inherited from class org.rocksdb.RocksObject

nativeHandle_

Fields inherited from class org.rocksdb.AbstractImmutableNativeReference

owningHandle_

Constructor Summary

Constructors

Constructor and Description
CompactionOptionsFIFO()

Method Summary

Modifier and Type	Method and Description
boolean	allowCompaction() Check if intra-L0 compaction is enabled.
protected void	disposeInternal(long handle)
long	maxTableFilesSize() Once the total sum of table files reaches this, we will delete the oldest table file Default: 1GB
CompactionOptionsFIFO	setAllowCompaction(boolean allowCompaction) If true, try to do compaction to compact smaller files into larger ones.
CompactionOptionsFIFO	setMaxTableFilesSize(long maxTableFilesSize) Once the total sum of table files reaches this, we will delete the oldest table file Default: 1GB

Methods inherited from class org.rocksdb.RocksObject

disposeInternal, getNativeHandle

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

CompactionOptionsFIFO

public CompactionOptionsFIFO()

Method Detail

setMaxTableFilesSize

public CompactionOptionsFIFO setMaxTableFilesSize(long maxTableFilesSize)

Once the total sum of table files reaches this, we will delete the oldest table file Default: 1GB

Parameters:

maxTableFilesSize - The maximum size of the table files

Returns:

the reference to the current options.

maxTableFilesSize

public long maxTableFilesSize()

Once the total sum of table files reaches this, we will delete the oldest table file Default: 1GB

Returns:

max table file size in bytes

setAllowCompaction

public CompactionOptionsFIFO setAllowCompaction(boolean allowCompaction)

If true, try to do compaction to compact smaller files into larger ones. Minimum files to compact follows options.level0_file_num_compaction_trigger and compaction won't trigger if average compact bytes per del file is larger than options.write_buffer_size. This is to protect large files from being compacted again. Default: false

Parameters:

allowCompaction - true to allow intra-L0 compaction

Returns:

the reference to the current options.

allowCompaction

public boolean allowCompaction()

Check if intra-L0 compaction is enabled. When enabled, we try to compact smaller files into larger ones. See setAllowCompaction(boolean). Default: false

Returns:

true if intra-L0 compaction is enabled, false otherwise.

disposeInternal

protected final void disposeInternal(long handle)

Specified by:

disposeInternal in class RocksObject