Package org.apache.iotdb.db.engine.compaction.task

Class AbstractCompactionTask

java.lang.Object

org.apache.iotdb.db.engine.compaction.task.AbstractCompactionTask

Direct Known Subclasses:

CrossSpaceCompactionTask, InnerSpaceCompactionTask

public abstract class AbstractCompactionTask
extends java.lang.Object

AbstractCompactionTask is the base class for all compaction task, it carries out the execution of compaction. AbstractCompactionTask uses a template method, it executes the abstract function doCompaction() implemented by subclass, and decrease the currentTaskNum in CompactionScheduler when the doCompaction() is finished. The future returns the CompactionTaskSummary of this task execution.

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.concurrent.atomic.AtomicInteger	currentTaskNum
protected java.lang.String	dataRegionId
protected int	hashCode
protected ICompactionPerformer	performer
protected long	serialId
protected java.lang.String	storageGroupName
protected CompactionTaskSummary	summary
protected long	timePartition
protected TsFileManager	tsFileManager

Constructor Summary

Constructors

Constructor	Description
AbstractCompactionTask(java.lang.String storageGroupName, java.lang.String dataRegionId, long timePartition, TsFileManager tsFileManager, java.util.concurrent.atomic.AtomicInteger currentTaskNum, long serialId)

Method Summary

Modifier and Type	Method	Description
void	cancel()
protected void	checkInterrupted()
abstract boolean	checkValidAndSetMerging()	Check if the compaction task is valid (selected files are not merging, closed and exist).
protected abstract void	doCompaction()
boolean	equals(java.lang.Object other)
abstract boolean	equalsOtherTask(AbstractCompactionTask otherTask)
java.lang.String	getDataRegionId()
long	getSerialId()
java.lang.String	getStorageGroupName()
CompactionTaskSummary	getSummary()
long	getTimeCost()
long	getTimePartition()
boolean	isSuccess()
boolean	isTaskFinished()
boolean	isTaskRan()
abstract void	resetCompactionCandidateStatusForAllSourceFiles()
abstract void	setSourceFilesToCompactionCandidate()
void	start()

Methods inherited from class java.lang.Object

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

Field Detail

dataRegionId

protected java.lang.String dataRegionId

storageGroupName

protected java.lang.String storageGroupName

timePartition

protected long timePartition

currentTaskNum

protected final java.util.concurrent.atomic.AtomicInteger currentTaskNum

tsFileManager

protected final TsFileManager tsFileManager

performer

protected ICompactionPerformer performer

hashCode

protected int hashCode

summary

protected CompactionTaskSummary summary

serialId

protected long serialId

Constructor Detail

AbstractCompactionTask

public AbstractCompactionTask(java.lang.String storageGroupName,
                              java.lang.String dataRegionId,
                              long timePartition,
                              TsFileManager tsFileManager,
                              java.util.concurrent.atomic.AtomicInteger currentTaskNum,
                              long serialId)

Method Detail

setSourceFilesToCompactionCandidate

public abstract void setSourceFilesToCompactionCandidate()

doCompaction

protected abstract void doCompaction()

start

public void start()

getStorageGroupName

public java.lang.String getStorageGroupName()

getDataRegionId

public java.lang.String getDataRegionId()

getTimePartition

public long getTimePartition()

equalsOtherTask

public abstract boolean equalsOtherTask(AbstractCompactionTask otherTask)

checkValidAndSetMerging

public abstract boolean checkValidAndSetMerging()

Check if the compaction task is valid (selected files are not merging, closed and exist). If the task is valid, then set the merging status of selected files to true.

Returns:

true if the task is valid else false

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

resetCompactionCandidateStatusForAllSourceFiles

public abstract void resetCompactionCandidateStatusForAllSourceFiles()

getTimeCost

public long getTimeCost()

checkInterrupted

protected void checkInterrupted()
                         throws java.lang.InterruptedException

Throws:

java.lang.InterruptedException

isTaskRan

public boolean isTaskRan()

cancel

public void cancel()

isSuccess

public boolean isSuccess()

getSummary

public CompactionTaskSummary getSummary()

isTaskFinished

public boolean isTaskFinished()

getSerialId

public long getSerialId()