org.apache.iotdb.db.tools.settle

类 TsFileAndModSettleTool

java.lang.Object

org.apache.iotdb.db.tools.settle.TsFileAndModSettleTool

public class TsFileAndModSettleTool
extends Object

Offline Settle tool, which is used to settle TsFile and its corresponding mods file to a new TsFile.

字段概要

字段

限定符和类型	字段和说明
Map<String,Integer>	recoverSettleFileMap

方法概要

限定符和类型	方法和说明
static List<File>	checkArgs(String[] args)
static void	clearRecoverSettleFileMap()
static void	findFilesToBeRecovered()
List<TsFileResource>	findSettledFile(TsFileResource resourceToBeSettled) when the new file is settled , we need to find and deserialize it.
static TsFileAndModSettleTool	getInstance()
boolean	isSettledFileGenerated(TsFileResource oldTsFileResource) this method is used to check whether the new file is settled when recovering old tsFile.
static void	main(String[] args)
static void	moveNewTsFile(TsFileResource oldTsFileResource, List<TsFileResource> newTsFileResources) This method is used to move a new TsFile and its corresponding resource file to the correct folder.
void	settleOneTsFileAndMod(TsFileResource resourceToBeSettled, List<TsFileResource> settledResources) The size of settledResources will be 0 in one of the following conditions: (1) old TsFile is not closed (2) old ModFile is not existed (3) all data in the old tsfile is being deleted after settling
static void	settleTsFilesAndMods(Map<String,TsFileResource> resourcesToBeSettled) This method is used to settle tsFiles and mods files, so that each old TsFile corresponds to one or several new TsFiles.

从类继承的方法 java.lang.Object

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

字段详细资料

recoverSettleFileMap

public Map<String,Integer> recoverSettleFileMap

方法详细资料

getInstance

public static TsFileAndModSettleTool getInstance()

main

public static void main(String[] args)

checkArgs

public static List<File> checkArgs(String[] args)

settleTsFilesAndMods

public static void settleTsFilesAndMods(Map<String,TsFileResource> resourcesToBeSettled)

This method is used to settle tsFiles and mods files, so that each old TsFile corresponds to one or several new TsFiles. This method is only applicable to V3 TsFile. Each old TsFile corresponds to one or several new TsFileResources of the new TsFiles

settleOneTsFileAndMod

public void settleOneTsFileAndMod(TsFileResource resourceToBeSettled,
                                  List<TsFileResource> settledResources)
                           throws WriteProcessException,
                                  IllegalPathException,
                                  IOException

The size of settledResources will be 0 in one of the following conditions: (1) old TsFile is not closed (2) old ModFile is not existed (3) all data in the old tsfile is being deleted after settling

抛出:

WriteProcessException

IllegalPathException

IOException

findFilesToBeRecovered

public static void findFilesToBeRecovered()

isSettledFileGenerated

public boolean isSettledFileGenerated(TsFileResource oldTsFileResource)

this method is used to check whether the new file is settled when recovering old tsFile.

findSettledFile

public List<TsFileResource> findSettledFile(TsFileResource resourceToBeSettled)
                                     throws IOException

when the new file is settled , we need to find and deserialize it.

抛出:

IOException

moveNewTsFile

public static void moveNewTsFile(TsFileResource oldTsFileResource,
                                 List<TsFileResource> newTsFileResources)
                          throws IOException

This method is used to move a new TsFile and its corresponding resource file to the correct folder.

参数:

oldTsFileResource -

newTsFileResources - if the old TsFile has not any deletions or all the data in which has been deleted or its modFile does not exist, then this size will be 0.

抛出:

IOException

clearRecoverSettleFileMap

public static void clearRecoverSettleFileMap()