Jonathan Eagles created YARN-8054:
-------------------------------------
Summary: 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
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.
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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)
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