Package org.apache.iotdb.db.wal.recover.file

Class AbstractTsFileRecoverPerformer

java.lang.Object

org.apache.iotdb.db.wal.recover.file.AbstractTsFileRecoverPerformer

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

Direct Known Subclasses:

SealedTsFileRecoverPerformer, UnsealedTsFileRecoverPerformer

public abstract class AbstractTsFileRecoverPerformer
extends java.lang.Object
implements java.io.Closeable

This class is used to help recover TsFile

Field Summary

Fields

Modifier and Type	Field	Description
protected TsFileResource	tsFileResource	TsFile which needs recovery
protected org.apache.iotdb.tsfile.write.writer.RestorableTsFileIOWriter	writer	this writer will be open when .resource file doesn't exist

Constructor Summary

Constructors

Constructor	Description
AbstractTsFileRecoverPerformer(TsFileResource tsFileResource)

Method Summary

Modifier and Type	Method	Description
boolean	canWrite()
void	close()
boolean	hasCrashed()
protected void	reconstructResourceFile()
protected void	recoverWithWriter()	Recover TsFile with RestorableTsFileIOWriter, including load .resource file (reconstruct when necessary) and truncate the file to remaining corrected data.

Methods inherited from class java.lang.Object

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

Field Detail

tsFileResource

protected final TsFileResource tsFileResource

TsFile which needs recovery

writer

protected org.apache.iotdb.tsfile.write.writer.RestorableTsFileIOWriter writer

this writer will be open when .resource file doesn't exist

Constructor Detail

AbstractTsFileRecoverPerformer

public AbstractTsFileRecoverPerformer(TsFileResource tsFileResource)

Method Detail

recoverWithWriter

protected void recoverWithWriter()
                          throws DataRegionException,
                                 java.io.IOException

Recover TsFile with RestorableTsFileIOWriter, including load .resource file (reconstruct when necessary) and truncate the file to remaining corrected data.
Notice: this method may open a RestorableTsFileIOWriter, remember to close it.

Throws:

DataRegionException

java.io.IOException

reconstructResourceFile

protected void reconstructResourceFile()
                                throws java.io.IOException

Throws:

java.io.IOException

hasCrashed

public boolean hasCrashed()

canWrite

public boolean canWrite()

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Throws:

java.io.IOException