org.apache.hadoop.mapred

类 UserLogCleaner

java.lang.Object

java.lang.Thread

org.apache.hadoop.mapred.UserLogCleaner

所有已实现的接口:

Runnable

public class UserLogCleaner
extends Thread

This is used only in UserLogManager, to manage cleanup of user logs.

嵌套类概要

从类继承的嵌套类/接口 java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

字段概要

从类继承的字段 java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

构造器概要

构造器

构造器和说明
UserLogCleaner(UserLogManager userLogManager, Configuration conf)

方法概要

方法

限定符和类型	方法和说明
void	addOldUserLogsForDeletion(File loc, Configuration conf) Adds the job log directories for deletion with default retain hours.
void	clearOldUserLogs(Configuration conf) Clears all the logs in userlogs directory.
void	deleteJobLogs(JobID jobid)
void	markJobLogsForDeletion(long jobCompletionTime, int retainHours, JobID jobid) Adds job user-log directory to cleanup thread to delete logs after user-log retain hours.
void	run()
void	unmarkJobFromLogDeletion(JobID jobid) Remove job from user log deletion.

从类继承的方法 java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

从类继承的方法 java.lang.Object

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

构造器详细资料

UserLogCleaner

public UserLogCleaner(UserLogManager userLogManager,
              Configuration conf)
               throws IOException

抛出:

IOException

方法详细资料

run

public void run()

指定者:

run 在接口中 Runnable

覆盖:

run 在类中 Thread

deleteJobLogs

public void deleteJobLogs(JobID jobid)
                   throws IOException

抛出:

IOException

addOldUserLogsForDeletion

public void addOldUserLogsForDeletion(File loc,
                             Configuration conf)
                               throws IOException

Adds the job log directories for deletion with default retain hours. Deletes all other directories, if any.

参数:

loc - location of log directory

conf -

抛出:

IOException

clearOldUserLogs

public void clearOldUserLogs(Configuration conf)
                      throws IOException

Clears all the logs in userlogs directory. This is usually called on reinit/restart of the TaskTracker.

参数:

conf -

抛出:

IOException

markJobLogsForDeletion

public void markJobLogsForDeletion(long jobCompletionTime,
                          int retainHours,
                          JobID jobid)

Adds job user-log directory to cleanup thread to delete logs after user-log retain hours.

参数:

jobCompletionTime - job completion time in millis

retainHours - the user-log retain hours for the job

jobid - JobID for which user logs should be deleted

unmarkJobFromLogDeletion

public void unmarkJobFromLogDeletion(JobID jobid)

Remove job from user log deletion.

参数:

jobid -