接口 org.apache.hadoop.hbase.wal.WAL
的使用

使用WAL的程序包

程序包	说明
org.apache.hadoop.hbase.coprocessor	Table of Contents Overview Coprocessor RegionObserver Endpoint Coprocessor loading Overview Coprocessors are code that runs in-process on each region server.
org.apache.hadoop.hbase.regionserver
org.apache.hadoop.hbase.regionserver.wal
org.apache.hadoop.hbase.util
org.apache.hadoop.hbase.wal

org.apache.hadoop.hbase.coprocessor中WAL的使用

返回WAL的org.apache.hadoop.hbase.coprocessor中的方法

限定符和类型	方法和说明
WAL	WALCoprocessorEnvironment.getWAL()

org.apache.hadoop.hbase.regionserver中WAL的使用

返回WAL的org.apache.hadoop.hbase.regionserver中的方法

限定符和类型	方法和说明
WAL	HRegion.getWAL()
WAL	RegionServerServices.getWAL(HRegionInfo regionInfo)
WAL	HRegionServer.getWAL(HRegionInfo regionInfo)

返回变量类型为WAL的类型的org.apache.hadoop.hbase.regionserver中的方法

限定符和类型	方法和说明
List<WAL>	HRegionServer.getWALs()

参数类型为WAL的org.apache.hadoop.hbase.regionserver中的方法

限定符和类型	方法和说明
void	LogRoller.addWAL(WAL wal)
static HRegion	HRegion.createHRegion(HRegionInfo info, org.apache.hadoop.fs.Path rootDir, org.apache.hadoop.conf.Configuration conf, HTableDescriptor hTableDescriptor, WAL wal)
static HRegion	HRegion.createHRegion(HRegionInfo info, org.apache.hadoop.fs.Path rootDir, org.apache.hadoop.conf.Configuration conf, HTableDescriptor hTableDescriptor, WAL wal, boolean initialize) Convenience method creating new HRegions.
static HRegion	HRegion.createHRegion(HRegionInfo info, org.apache.hadoop.fs.Path rootDir, org.apache.hadoop.conf.Configuration conf, HTableDescriptor hTableDescriptor, WAL wal, boolean initialize, boolean ignoreWAL) Convenience method creating new HRegions.
static HRegion	HRegion.createHRegion(HRegionInfo info, org.apache.hadoop.fs.Path rootDir, org.apache.hadoop.fs.Path tableDir, org.apache.hadoop.conf.Configuration conf, HTableDescriptor hTableDescriptor, WAL wal, boolean initialize, boolean ignoreWAL) Convenience method creating new HRegions.
protected long	HRegion.getNextSequenceId(WAL wal) Method to safely get the next sequence number.
protected Region.FlushResult	HRegion.internalFlushcache(WAL wal, long myseqid, Collection<Store> storesToFlush, MonitoredTask status, boolean writeFlushWalMarker) Flush the memstore.
protected Region.FlushResult	HRegion.internalFlushCacheAndCommit(WAL wal, MonitoredTask status, org.apache.hadoop.hbase.regionserver.HRegion.PrepareFlushResult prepareResult, Collection<Store> storesToFlush)
protected org.apache.hadoop.hbase.regionserver.HRegion.PrepareFlushResult	HRegion.internalPrepareFlushCache(WAL wal, long myseqid, Collection<Store> storesToFlush, MonitoredTask status, boolean writeFlushWalMarker)
static HRegion	HRegion.openHRegion(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path rootDir, HRegionInfo info, HTableDescriptor htd, WAL wal) Open a Region.
static HRegion	HRegion.openHRegion(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path rootDir, HRegionInfo info, HTableDescriptor htd, WAL wal, RegionServerServices rsServices, CancelableProgressable reporter) Open a Region.
static HRegion	HRegion.openHRegion(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path rootDir, org.apache.hadoop.fs.Path tableDir, HRegionInfo info, HTableDescriptor htd, WAL wal, RegionServerServices rsServices, CancelableProgressable reporter) Open a Region.
static HRegion	HRegion.openHRegion(HRegionInfo info, HTableDescriptor htd, WAL wal, org.apache.hadoop.conf.Configuration conf) Open a Region.
static HRegion	HRegion.openHRegion(HRegionInfo info, HTableDescriptor htd, WAL wal, org.apache.hadoop.conf.Configuration conf, RegionServerServices rsServices, CancelableProgressable reporter) Open a Region.
static HRegion	HRegion.openHRegion(org.apache.hadoop.fs.Path rootDir, HRegionInfo info, HTableDescriptor htd, WAL wal, org.apache.hadoop.conf.Configuration conf) Open a Region.
static HRegion	HRegion.openHRegion(org.apache.hadoop.fs.Path rootDir, HRegionInfo info, HTableDescriptor htd, WAL wal, org.apache.hadoop.conf.Configuration conf, RegionServerServices rsServices, CancelableProgressable reporter) Open a Region.
static void	HRegion.warmupHRegion(HRegionInfo info, HTableDescriptor htd, WAL wal, org.apache.hadoop.conf.Configuration conf, RegionServerServices rsServices, CancelableProgressable reporter)

参数类型为WAL的org.apache.hadoop.hbase.regionserver中的构造器

构造器和说明
HRegion(HRegionFileSystem fs, WAL wal, org.apache.hadoop.conf.Configuration confParam, HTableDescriptor htd, RegionServerServices rsServices) HRegion constructor.
HRegion(org.apache.hadoop.fs.Path tableDir, WAL wal, org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.conf.Configuration confParam, HRegionInfo regionInfo, HTableDescriptor htd, RegionServerServices rsServices) 已过时。 Use other constructors.

org.apache.hadoop.hbase.regionserver.wal中WAL的使用

实现WAL的org.apache.hadoop.hbase.regionserver.wal中的类

限定符和类型	类和说明
class	FSHLog Implementation of WAL to go against FileSystem; i.e. keep WALs in HDFS.

参数类型为WAL的org.apache.hadoop.hbase.regionserver.wal中的方法

限定符和类型	方法和说明
static long	WALUtil.writeBulkLoadMarkerAndSync(WAL wal, HTableDescriptor htd, HRegionInfo hri, org.apache.hadoop.hbase.protobuf.generated.WALProtos.BulkLoadDescriptor desc, MultiVersionConcurrencyControl mvcc) Write a log marker that a bulk load has succeeded and is about to be committed.
static long	WALUtil.writeCompactionMarker(WAL wal, HTableDescriptor htd, HRegionInfo hri, org.apache.hadoop.hbase.protobuf.generated.WALProtos.CompactionDescriptor c, MultiVersionConcurrencyControl mvcc) Write the marker that a compaction has succeeded and is about to be committed.
static long	WALUtil.writeFlushMarker(WAL wal, HTableDescriptor htd, HRegionInfo hri, org.apache.hadoop.hbase.protobuf.generated.WALProtos.FlushDescriptor f, boolean sync, MultiVersionConcurrencyControl mvcc) Write a flush marker indicating a start / abort or a complete of a region flush
static long	WALUtil.writeRegionEventMarker(WAL wal, HTableDescriptor htd, HRegionInfo hri, org.apache.hadoop.hbase.protobuf.generated.WALProtos.RegionEventDescriptor r, MultiVersionConcurrencyControl mvcc) Write a region open marker indicating that the region is opened

参数类型为WAL的org.apache.hadoop.hbase.regionserver.wal中的构造器

构造器和说明
WALCoprocessorHost(WAL log, org.apache.hadoop.conf.Configuration conf) Constructor

org.apache.hadoop.hbase.util中WAL的使用

返回WAL的org.apache.hadoop.hbase.util中的方法

限定符和类型	方法和说明
WAL	MetaUtils.getLog(HRegionInfo info)

org.apache.hadoop.hbase.wal中WAL的使用

返回WAL的org.apache.hadoop.hbase.wal中的方法

限定符和类型	方法和说明
WAL	WALFactory.getMetaWAL(byte[] identifier)
WAL	RegionGroupingProvider.getWAL(byte[] identifier, byte[] namespace)
WAL	WALProvider.getWAL(byte[] identifier, byte[] namespace)
WAL	WALFactory.getWAL(byte[] identifier, byte[] namespace)
WAL	DefaultWALProvider.getWAL(byte[] identifier, byte[] namespace)

返回变量类型为WAL的类型的org.apache.hadoop.hbase.wal中的方法

限定符和类型	方法和说明
List<WAL>	RegionGroupingProvider.getWALs()
List<WAL>	WALProvider.getWALs()
List<WAL>	WALFactory.getWALs()
List<WAL>	DefaultWALProvider.getWALs()

参数类型为WAL的org.apache.hadoop.hbase.wal中的方法

限定符和类型	方法和说明
static long	DefaultWALProvider.extractFileNumFromWAL(WAL wal) It returns the file create timestamp from the file name.
static org.apache.hadoop.fs.Path	DefaultWALProvider.getCurrentFileName(WAL wal) return the current filename from the current wal.
static int	DefaultWALProvider.getNumRolledLogFiles(WAL wal) returns the number of rolled WAL files.