[
https://issues.apache.org/jira/browse/MAPREDUCE-3671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13185993#comment-13185993
]
Vinod Kumar Vavilapalli commented on MAPREDUCE-3671:
----------------------------------------------------
.. And this has performance implications on benchmarks. Hurts execution time
real bad when there is no speculation for jobs with small tasks. Which is the
default.
> AM-NM RPC calls occasionally takes a long time to respond
> ---------------------------------------------------------
>
> Key: MAPREDUCE-3671
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3671
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2, nodemanager
> Affects Versions: 0.23.0
> Reporter: Siddharth Seth
>
> Observed while looking at MAPREDUCE-3596 and MAPREDUCE-3656.
> startContainer taking over a minute in some cases, otherwise 15 seconds. Both
> were observed soon after reduce tasks started. Network congestion ? Need more
> looking into.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
