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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-4657) WindowsResourceCalculatorPlugin has NPE
Date Thu, 04 Oct 2012 02:49:07 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4657?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Suresh Srinivas resolved MAPREDUCE-4657.
----------------------------------------

       Resolution: Fixed
    Fix Version/s: 1-win
     Hadoop Flags: Reviewed

+1 for the patch. I committed it. Thank you Bikas.
                
> 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
>             Fix For: 1-win
>
>         Attachments: MAPREDUCE-4657.branch-1-win.1.patch, MAPREDUCE-4657.branch-1-win.2.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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