hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-815) Investigate and fix the extremely large memory-footprint of JobTracker
Date Sat, 06 Jan 2007 04:49:27 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12462681

Devaraj Das commented on HADOOP-815:

Yeah, I agree that JobTracker does not get locked for some flows in the code (and the patch,
I think, doesn't worsen/improve this situation). Arun and I were thinking that a new Jira
should be raised to handle these bugs. 

> Investigate and fix the extremely large memory-footprint of JobTracker
> ----------------------------------------------------------------------
>                 Key: HADOOP-815
>                 URL: https://issues.apache.org/jira/browse/HADOOP-815
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.9.1
>            Reporter: Arun C Murthy
>         Assigned To: Arun C Murthy
>             Fix For: 0.10.1
>         Attachments: 150k_1199_774.nps, 75k_jobs.nps, HADOOP-815_20061220_1.patch, HADOOP-815_20061221_2.patch,
HADOOP-815_20061222_3.patch, HADOOP-815_20061230_4.patch, HADOOP-815_20070105_5.patch, HADOOP-815_20070106_6.patch,
> The JobTracker's memory footprint seems excessively large, especially when many jobs
are submitted.
> Here is the 'top' output of a JobTracker which has scheduled ~1k jobs thus far:
>   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                
> 31877 arunc     19   0 2362m 261m  13m S 14.0 12.9  24:48.08 java  
> Clearly VIRTual memory of 2364Mb v/s 261Mb of RESident memory is symptomatic of this

This message is automatically generated by JIRA.
If you think it was sent incorrectly contact one of the administrators: https://issues.apache.org/jira/secure/Administrators.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira


View raw message