org.apache.hadoop.hbase.master.cleaner

类 LogCleaner

java.lang.Object

org.apache.hadoop.hbase.ScheduledChore

org.apache.hadoop.hbase.master.cleaner.CleanerChore<BaseLogCleanerDelegate>

org.apache.hadoop.hbase.master.cleaner.LogCleaner

所有已实现的接口:

Runnable, ConfigurationObserver

@InterfaceAudience.Private
public class LogCleaner
extends CleanerChore<BaseLogCleanerDelegate>
implements ConfigurationObserver

This Chore, every time it runs, will attempt to delete the WALs in the old logs folder. The WAL is only deleted if none of the cleaner delegates says otherwise.

另请参阅:

BaseLogCleanerDelegate

字段概要

字段

限定符和类型	字段和说明
static int	DEFAULT_OLD_WALS_CLEANER_THREAD_SIZE
static String	OLD_WALS_CLEANER_THREAD_CHECK_INTERVAL_MSEC
static String	OLD_WALS_CLEANER_THREAD_SIZE
static String	OLD_WALS_CLEANER_THREAD_TIMEOUT_MSEC

从类继承的字段 org.apache.hadoop.hbase.master.cleaner.CleanerChore

CHORE_POOL_SIZE, cleanersChain, fs, params

构造器概要

构造器

构造器和说明
LogCleaner(int p, Stoppable s, org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path oldLogDir, DirScanPool pool)

方法概要

方法

限定符和类型	方法和说明
void	cancel(boolean mayInterruptIfRunning)
void	cleanup()
protected int	deleteFiles(Iterable<org.apache.hadoop.fs.FileStatus> filesToDelete) Delete the given files
void	onConfigurationChange(org.apache.hadoop.conf.Configuration conf) This method would be called by the ConfigurationManager object when the Configuration object is reloaded from disk.
protected boolean	validate(org.apache.hadoop.fs.Path file) Validate the file to see if it even belongs in the directory.

从类继承的方法 org.apache.hadoop.hbase.master.cleaner.CleanerChore

chore, getEnabled, runCleaner, setEnabled

从类继承的方法 org.apache.hadoop.hbase.ScheduledChore

cancel, choreForTesting, getInitialDelay, getName, getPeriod, getStopper, getTimeUnit, initialChore, isInitialChoreComplete, isScheduled, run, toString, triggerNow

从类继承的方法 java.lang.Object

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

字段详细资料

OLD_WALS_CLEANER_THREAD_SIZE

public static final String OLD_WALS_CLEANER_THREAD_SIZE

另请参阅:

常量字段值

DEFAULT_OLD_WALS_CLEANER_THREAD_SIZE

public static final int DEFAULT_OLD_WALS_CLEANER_THREAD_SIZE

另请参阅:

常量字段值

OLD_WALS_CLEANER_THREAD_TIMEOUT_MSEC

public static final String OLD_WALS_CLEANER_THREAD_TIMEOUT_MSEC

另请参阅:

常量字段值

OLD_WALS_CLEANER_THREAD_CHECK_INTERVAL_MSEC

public static final String OLD_WALS_CLEANER_THREAD_CHECK_INTERVAL_MSEC

另请参阅:

常量字段值

构造器详细资料

LogCleaner

public LogCleaner(int p,
          Stoppable s,
          org.apache.hadoop.conf.Configuration conf,
          org.apache.hadoop.fs.FileSystem fs,
          org.apache.hadoop.fs.Path oldLogDir,
          DirScanPool pool)

参数:

p - the period of time to sleep between each run

s - the stopper

conf - configuration to use

fs - handle to the FS

oldLogDir - the path to the archived logs

方法详细资料

validate

protected boolean validate(org.apache.hadoop.fs.Path file)

从类复制的说明: CleanerChore

Validate the file to see if it even belongs in the directory. If it is valid, then the file will go through the cleaner delegates, but otherwise the file is just deleted.

指定者:

validate 在类中 CleanerChore<BaseLogCleanerDelegate>

参数:

file - full Path of the file to be checked

返回:

true if the file is valid, false otherwise

onConfigurationChange

public void onConfigurationChange(org.apache.hadoop.conf.Configuration conf)

从接口复制的说明: ConfigurationObserver

This method would be called by the ConfigurationManager object when the Configuration object is reloaded from disk.

指定者:

onConfigurationChange 在接口中 ConfigurationObserver

deleteFiles

protected int deleteFiles(Iterable<org.apache.hadoop.fs.FileStatus> filesToDelete)

从类复制的说明: CleanerChore

Delete the given files

覆盖:

deleteFiles 在类中 CleanerChore<BaseLogCleanerDelegate>

参数:

filesToDelete - files to delete

返回:

number of deleted files

cleanup

public void cleanup()

覆盖:

cleanup 在类中 CleanerChore<BaseLogCleanerDelegate>

cancel

public void cancel(boolean mayInterruptIfRunning)

覆盖:

cancel 在类中 ScheduledChore