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HDFS >> mail # user >> Hadoop jobtracker OOME fix applied and no OOME but JT hanged


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Re: Hadoop jobtracker OOME fix applied and no OOME but JT hanged
>From the command line, can you run 'jmap -heap' ?

http://download.oracle.com/javase/1.5.0/docs/tooldocs/share/jmap.html
On Fri, Nov 15, 2013 at 10:50 AM, Viswanathan J
<[EMAIL PROTECTED]>wrote:

> Hi guys,
>
> I had JT OOME in hadoop version 1.2.1 and applied the patch based on the
> fix given by Apache contributors for jira issue mapreduce-5508.
>
> After applying that fix the heap size gradually increases but after one
> week jobtracker completely hangs and slowdown but didn't get JT OOME. No
> error in JT logs.
>
> Without this fix weekly once JT heap size increases and got OOME.
>
> Please help its our production environment.
>
> Thanks,
>