org.apache.iotdb.db.tools.upgrade

类 TsFileOnlineUpgradeTool

java.lang.Object

org.apache.iotdb.db.tools.TsFileRewriteTool

org.apache.iotdb.db.tools.upgrade.TsFileOnlineUpgradeTool

所有已实现的接口:

AutoCloseable

public class TsFileOnlineUpgradeTool
extends TsFileRewriteTool

字段概要

从类继承的字段 org.apache.iotdb.db.tools.TsFileRewriteTool

defaultTimeDecoder, maxPlanIndex, minPlanIndex, modsIterator, oldModification, oldTsFile, oldTsFileResource, partitionWriterMap, reader, valueDecoder

构造器概要

构造器

构造器和说明
TsFileOnlineUpgradeTool(TsFileResource resourceToBeUpgraded) Create a file reader of the given file.

方法概要

限定符和类型	方法和说明
protected boolean	checkIfNeedToDecode(TSDataType dataType, TSEncoding encoding, PageHeader pageHeader, MeasurementSchema schema, String deviceId, long chunkHeaderOffset) Due to TsFile version-3 changed the serialize way of integer in TEXT data and INT32 data with PLAIN encoding, and also add a sum statistic for BOOLEAN data, these types of data need to decode to points and rewrite in new TsFile.
protected void	decodeAndWritePage(MeasurementSchema schema, ByteBuffer pageData, Map<Long,ChunkWriterImpl> partitionChunkWriterMap)
protected boolean	fileCheck() check if the file to be upgraded has correct magic strings and version number
static void	upgradeOneTsFile(TsFileResource resourceToBeUpgraded, List<TsFileResource> upgradedResources) upgrade a single TsFile.
String	upgradeTsFileName(String oldTsFileName) TsFileName is changing like from 1610635230693-1-0.tsfile to 1610635230693-1-0-0.tsfile

从类继承的方法 org.apache.iotdb.db.tools.TsFileRewriteTool

checkIfNeedToDecode, close, decodeAndWritePage, endChunkGroup, endFileAndGenerateResource, getOrDefaultTsFileIOWriter, parseAndRewriteFile, reWriteChunk, rewritePageIntoFiles, rewriteTsFile, writePage

从类继承的方法 java.lang.Object

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

构造器详细资料

TsFileOnlineUpgradeTool

public TsFileOnlineUpgradeTool(TsFileResource resourceToBeUpgraded)
                        throws IOException

Create a file reader of the given file. This reader will read the old file and rewrite it to a new format(v3) file

参数:

resourceToBeUpgraded - the old tsfile resource which need to be upgrade

抛出:

IOException - If some I/O error occurs

方法详细资料

upgradeOneTsFile

public static void upgradeOneTsFile(TsFileResource resourceToBeUpgraded,
                                    List<TsFileResource> upgradedResources)
                             throws IOException,
                                    WriteProcessException

upgrade a single TsFile.

参数:

resourceToBeUpgraded - the old file's resource which need to be upgrade.

upgradedResources - new version tsFiles' resources

抛出:

IOException

WriteProcessException

upgradeTsFileName

public String upgradeTsFileName(String oldTsFileName)

TsFileName is changing like from 1610635230693-1-0.tsfile to 1610635230693-1-0-0.tsfile

覆盖:

upgradeTsFileName 在类中 TsFileRewriteTool

checkIfNeedToDecode

protected boolean checkIfNeedToDecode(TSDataType dataType,
                                      TSEncoding encoding,
                                      PageHeader pageHeader,
                                      MeasurementSchema schema,
                                      String deviceId,
                                      long chunkHeaderOffset)
                               throws IllegalPathException

Due to TsFile version-3 changed the serialize way of integer in TEXT data and INT32 data with PLAIN encoding, and also add a sum statistic for BOOLEAN data, these types of data need to decode to points and rewrite in new TsFile.

抛出:

IllegalPathException

decodeAndWritePage

protected void decodeAndWritePage(MeasurementSchema schema,
                                  ByteBuffer pageData,
                                  Map<Long,ChunkWriterImpl> partitionChunkWriterMap)
                           throws IOException

抛出:

IOException

fileCheck

protected boolean fileCheck()
                     throws IOException

check if the file to be upgraded has correct magic strings and version number

覆盖:

fileCheck 在类中 TsFileRewriteTool

抛出:

IOException