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

Class AbstractCrossSpaceEstimator

java.lang.Object

org.apache.iotdb.db.engine.compaction.cross.utils.AbstractCompactionEstimator

org.apache.iotdb.db.engine.compaction.cross.AbstractCrossSpaceEstimator

Direct Known Subclasses:

InplaceCompactionEstimator, ReadPointCrossCompactionEstimator

public abstract class AbstractCrossSpaceEstimator
extends AbstractCompactionEstimator

Estimate the memory cost of one cross space compaction task with specific source files based on its corresponding implementation.

Field Summary

Fields inherited from class org.apache.iotdb.db.engine.compaction.cross.utils.AbstractCompactionEstimator

fileReaderCache

Constructor Summary

Constructors

Constructor	Description
AbstractCrossSpaceEstimator()

Method Summary

Modifier and Type	Method	Description
abstract long	estimateCrossCompactionMemory(java.util.List<TsFileResource> seqResources, TsFileResource unseqResource)	Estimate the memory cost of compacting the unseq file and its corresponding overlapped seq files in cross space compaction task.
long	estimateInnerCompactionMemory(java.util.List<TsFileResource> resources)	Estimate the memory cost of compacting the source files in inner space compaction task.

Methods inherited from class org.apache.iotdb.db.engine.compaction.cross.utils.AbstractCompactionEstimator

clear, getFileReader

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractCrossSpaceEstimator

public AbstractCrossSpaceEstimator()

Method Detail

estimateCrossCompactionMemory

public abstract long estimateCrossCompactionMemory(java.util.List<TsFileResource> seqResources,
                                                   TsFileResource unseqResource)
                                            throws java.io.IOException

Description copied from class: AbstractCompactionEstimator

Estimate the memory cost of compacting the unseq file and its corresponding overlapped seq files in cross space compaction task.

Specified by:

estimateCrossCompactionMemory in class AbstractCompactionEstimator

Throws:

java.io.IOException

estimateInnerCompactionMemory

public long estimateInnerCompactionMemory(java.util.List<TsFileResource> resources)

Description copied from class: AbstractCompactionEstimator

Estimate the memory cost of compacting the source files in inner space compaction task.

Specified by:

estimateInnerCompactionMemory in class AbstractCompactionEstimator