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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4657) WindowsResourceCalculatorPlugin has NPE
Date Wed, 03 Oct 2012 23:21:08 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13468967#comment-13468967
] 

Suresh Srinivas commented on MAPREDUCE-4657:
--------------------------------------------

bq. I just want to prevent the log from getting lost because of logging rules. I can change
it to Log.error() in fact.
Sorry I was not clear earlier. LOG.warn is generally higher priority than LOG.info and it
will certainly get printed. LOG.warn is used to warn about things not working correctly. LOG.info
is just informational and does not indicate errors/warnings.

So can you please change that LOG.info to LOG.warn.
                
> 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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