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https://issues.apache.org/jira/browse/YARN-8054?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Kuhu Shukla reassigned YARN-8054:
---------------------------------
Assignee: Jonathan Eagles (was: Jason Lowe)
> Improve robustness of the LocalDirsHandlerService MonitoringTimerTask thread
> ----------------------------------------------------------------------------
>
> Key: YARN-8054
> URL: https://issues.apache.org/jira/browse/YARN-8054
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Jonathan Eagles
> Assignee: Jonathan Eagles
> Priority: Major
> Fix For: 2.10.0, 2.9.1, 2.8.4, 3.0.2, 3.1.1
>
> Attachments: YARN-8054.001.patch, YARN-8054.002.patch
>
>
> The DeprecatedRawLocalFileStatus#loadPermissionInfo can throw a
> RuntimeException which can kill the MonitoringTimerTask thread. This can
> leave the node is a bad state where all NM local directories are marked "bad"
> and there is no automatic recovery. In the below can the error was "too many
> open files", but could be a number of other recoverable states.
> {noformat}
> 2018-03-18 02:37:42,960 [DiskHealthMonitor-Timer] ERROR
> yarn.YarnUncaughtExceptionHandler: Thread
> Thread[DiskHealthMonitor-Timer,5,main] threw an Exception.
> java.lang.RuntimeException: Error while running command to get file
> permissions : java.io.IOException: Cannot run program "ls": error=24, Too
> many open files
> at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
> at org.apache.hadoop.util.Shell.runCommand(Shell.java:942)
> at org.apache.hadoop.util.Shell.run(Shell.java:898)
> at
> org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:1213)
> at org.apache.hadoop.util.Shell.execCommand(Shell.java:1307)
> at org.apache.hadoop.util.Shell.execCommand(Shell.java:1289)
> at org.apache.hadoop.fs.FileUtil.execCommand(FileUtil.java:1078)
> at
> org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.loadPermissionInfo(RawLocalFileSystem.java:697)
> at
> org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.getPermission(RawLocalFileSystem.java:672)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.checkLocalDir(ResourceLocalizationService.java:1556)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.checkAndInitializeLocalDirs(ResourceLocalizationService.java:1521)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$1.onDirsChanged(ResourceLocalizationService.java:271)
> at
> org.apache.hadoop.yarn.server.nodemanager.DirectoryCollection.checkDirs(DirectoryCollection.java:381)
> at
> org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService.checkDirs(LocalDirsHandlerService.java:449)
> at
> org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService.access$500(LocalDirsHandlerService.java:52)
> at
> org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService$MonitoringTimerTask.run(LocalDirsHandlerService.java:166)
> at java.util.TimerThread.mainLoop(Timer.java:555)
> at java.util.TimerThread.run(Timer.java:505)
> Caused by: java.io.IOException: error=24, Too many open files
> at java.lang.UNIXProcess.forkAndExec(Native Method)
> at java.lang.UNIXProcess.<init>(UNIXProcess.java:247)
> at java.lang.ProcessImpl.start(ProcessImpl.java:134)
> at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
> ... 17 more
> at
> org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.loadPermissionInfo(RawLocalFileSystem.java:737)
> at
> org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.getPermission(RawLocalFileSystem.java:672)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.checkLocalDir(ResourceLocalizationService.java:1556)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.checkAndInitializeLocalDirs(ResourceLocalizationService.java:1521)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$1.onDirsChanged(ResourceLocalizationService.java:271)
> at
> org.apache.hadoop.yarn.server.nodemanager.DirectoryCollection.checkDirs(DirectoryCollection.java:381)
> at
> org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService.checkDirs(LocalDirsHandlerService.java:449)
> at
> org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService.access$500(LocalDirsHandlerService.java:52)
> at
> org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService$MonitoringTimerTask.run(LocalDirsHandlerService.java:166)
> at java.util.TimerThread.mainLoop(Timer.java:555)
> at java.util.TimerThread.run(Timer.java:505)
> {noformat}
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