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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4657) WindowsResourceCalculatorPlugin has NPE
Date Wed, 03 Oct 2012 06:06:08 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13468360#comment-13468360
] 

Bikas Saha commented on MAPREDUCE-4657:
---------------------------------------

1) Thats because I dont want to suppress the log. This would indicate running with an incompatible
version of winutils
2) There is no log when sysInfo is null. Can you apply the patch to the code and check again?
                
> WindowsResourceCalculatorPlugin has NPE
> ---------------------------------------
>
>                 Key: MAPREDUCE-4657
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4657
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Bikas Saha
>            Assignee: Bikas Saha
>            Priority: Minor
>         Attachments: MAPREDUCE-4657.branch-1-win.1.patch
>
>
> When Shell command execution is interrupted then WindowsResourceCalculatorPlugin has
NPE.
> code}
> 2012-08-31 13:01:00,140 ERROR [Thread-771] util.WindowsResourceCalculatorPlugin(69):
java.io.IOException: java.lang.InterruptedException^M
>         at org.apache.hadoop.util.Shell.runCommand(Shell.java:424)^M
>         at org.apache.hadoop.util.Shell.run(Shell.java:336)^M
>         at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:540)^M
>         at org.apache.hadoop.util.WindowsResourceCalculatorPlugin.getSystemInfoInfoFromShell(WindowsResourceCalculatorPlugin.java:66)^M
>         at org.apache.hadoop.util.WindowsResourceCalculatorPlugin.refreshIfNeeded(WindowsResourceCalculatorPlugin.java:81)^M
>         at org.apache.hadoop.util.WindowsResourceCalculatorPlugin.getAvailableVirtualMemorySize(WindowsResourceCalculatorPlugin.java:126)^M
>         at org.apache.hadoop.mapred.TaskTracker.getAvailableVirtualMemoryOnTT(TaskTracker.java:1933)^M
>         at org.apache.hadoop.mapred.TaskTracker.transmitHeartBeat(TaskTracker.java:1834)^M
>         at org.apache.hadoop.mapred.TaskTracker.offerService(TaskTracker.java:1664)^M
>         at org.apache.hadoop.mapred.TaskTracker.run(TaskTracker.java:2516)^M
>         at org.apache.hadoop.mapred.MiniMRCluster$TaskTrackerRunner.run(MiniMRCluster.java:217)^M
>         at java.lang.Thread.run(Thread.java:662)^M
> ^M
> 2012-08-31 13:01:00,140 ERROR [Thread-771] mapred.TaskTracker(1766): Caught exception:
java.lang.NullPointerException^M
>         at org.apache.hadoop.util.WindowsResourceCalculatorPlugin.refreshIfNeeded(WindowsResourceCalculatorPlugin.java:83)^M
>         at org.apache.hadoop.util.WindowsResourceCalculatorPlugin.getAvailableVirtualMemorySize(WindowsResourceCalculatorPlugin.java:126)^M
>         at org.apache.hadoop.mapred.TaskTracker.getAvailableVirtualMemoryOnTT(TaskTracker.java:1933)^M
>         at org.apache.hadoop.mapred.TaskTracker.transmitHeartBeat(TaskTracker.java:1834)^M
>         at org.apache.hadoop.mapred.TaskTracker.offerService(TaskTracker.java:1664)^M
>         at org.apache.hadoop.mapred.TaskTracker.run(TaskTracker.java:2516)^M
>         at org.apache.hadoop.mapred.MiniMRCluster$TaskTrackerRunner.run(MiniMRCluster.java:217)^M
>         at java.lang.Thread.run(Thread.java:662)^M
> {code}

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