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

类 AbstractCompactionTask

java.lang.Object

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

所有已实现的接口:

Callable<CompactionTaskSummary>

直接已知子类:

AbstractCrossSpaceCompactionTask, AbstractInnerSpaceCompactionTask

public abstract class AbstractCompactionTask
extends Object
implements Callable<CompactionTaskSummary>

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.

字段概要

字段

限定符和类型	字段和说明
protected AtomicInteger	currentTaskNum
protected String	fullStorageGroupName
protected long	timeCost
protected long	timePartition
protected TsFileManager	tsFileManager

构造器概要

构造器

构造器和说明
AbstractCompactionTask(String fullStorageGroupName, long timePartition, TsFileManager tsFileManager, AtomicInteger currentTaskNum)

方法概要

限定符和类型	方法和说明
CompactionTaskSummary	call()
abstract boolean	checkValidAndSetMerging() Check if the compaction task is valid (selected files are not merging, closed and exist).
protected abstract void	doCompaction()
boolean	equals(Object other)
abstract boolean	equalsOtherTask(AbstractCompactionTask otherTask)
String	getFullStorageGroupName()
long	getTimeCost()
long	getTimePartition()
abstract void	resetCompactionCandidateStatusForAllSourceFiles()
abstract void	setSourceFilesToCompactionCandidate()

从类继承的方法 java.lang.Object

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

字段详细资料

fullStorageGroupName

protected String fullStorageGroupName

timePartition

protected long timePartition

currentTaskNum

protected final AtomicInteger currentTaskNum

tsFileManager

protected final TsFileManager tsFileManager

timeCost

protected long timeCost

构造器详细资料

AbstractCompactionTask

public AbstractCompactionTask(String fullStorageGroupName,
                              long timePartition,
                              TsFileManager tsFileManager,
                              AtomicInteger currentTaskNum)

方法详细资料

setSourceFilesToCompactionCandidate

public abstract void setSourceFilesToCompactionCandidate()

doCompaction

protected abstract void doCompaction()
                              throws Exception

抛出:

Exception

call

public CompactionTaskSummary call()
                           throws Exception

指定者:

call 在接口中 Callable<CompactionTaskSummary>

抛出:

Exception

getFullStorageGroupName

public String getFullStorageGroupName()

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.

返回:

true if the task is valid else false

equals

public boolean equals(Object other)

覆盖:

equals 在类中 Object

resetCompactionCandidateStatusForAllSourceFiles

public abstract void resetCompactionCandidateStatusForAllSourceFiles()

getTimeCost

public long getTimeCost()