Package org.apache.iotdb.db.engine.compaction.cross.rewrite

Class RewriteCrossSpaceCompactionSelector

java.lang.Object

org.apache.iotdb.db.engine.compaction.cross.rewrite.RewriteCrossSpaceCompactionSelector

All Implemented Interfaces:

ICrossSpaceSelector, ICompactionSelector

public class RewriteCrossSpaceCompactionSelector
extends java.lang.Object
implements ICrossSpaceSelector

Field Summary

Fields

Modifier and Type	Field	Description
protected java.lang.String	dataRegionId
protected java.lang.String	logicalStorageGroupName
protected long	timePartition
protected TsFileManager	tsFileManager

Constructor Summary

Constructors

Constructor	Description
RewriteCrossSpaceCompactionSelector(java.lang.String logicalStorageGroupName, java.lang.String dataRegionId, long timePartition, TsFileManager tsFileManager)

Method Summary

Modifier and Type	Method	Description
java.util.List<java.lang.Long>	getCompactionMemoryCost()
java.util.List	selectCrossSpaceTask(java.util.List<TsFileResource> sequenceFileList, java.util.List<TsFileResource> unsequenceFileList)	This method creates a specific file selector according to the file selection strategy of crossSpace compaction, uses the file selector to select all unseqFiles and seqFiles to be compacted under the time partition of the virtual storage group, and creates a compaction task for them.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.iotdb.db.engine.compaction.task.ICompactionSelector

selectInnerSpaceTask

Field Detail

logicalStorageGroupName

protected java.lang.String logicalStorageGroupName

dataRegionId

protected java.lang.String dataRegionId

timePartition

protected long timePartition

tsFileManager

protected TsFileManager tsFileManager

Constructor Detail

RewriteCrossSpaceCompactionSelector

public RewriteCrossSpaceCompactionSelector(java.lang.String logicalStorageGroupName,
                                           java.lang.String dataRegionId,
                                           long timePartition,
                                           TsFileManager tsFileManager)

Method Detail

selectCrossSpaceTask

public java.util.List selectCrossSpaceTask(java.util.List<TsFileResource> sequenceFileList,
                                           java.util.List<TsFileResource> unsequenceFileList)

This method creates a specific file selector according to the file selection strategy of crossSpace compaction, uses the file selector to select all unseqFiles and seqFiles to be compacted under the time partition of the virtual storage group, and creates a compaction task for them. The task is put into the compactionTaskQueue of the CompactionTaskManager.

Specified by:

selectCrossSpaceTask in interface ICompactionSelector

Specified by:

selectCrossSpaceTask in interface ICrossSpaceSelector

Returns:

Returns whether the file was found and submits the merge task

getCompactionMemoryCost

public java.util.List<java.lang.Long> getCompactionMemoryCost()

Specified by:

getCompactionMemoryCost in interface ICompactionSelector