[
https://issues.apache.org/jira/browse/MAPREDUCE-5786?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Vinod Kumar Vavilapalli resolved MAPREDUCE-5786.
------------------------------------------------
Resolution: Fixed
All sub-tasks (only one actually) are done.
> Support Keep-Alive connections in ShuffleHandler
> ------------------------------------------------
>
> Key: MAPREDUCE-5786
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5786
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.4.0
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Labels: shuffle
>
> Currently ShuffleHandler supports fetching map-outputs in batches from same
> host. But there are scenarios wherein, fetchers pull data aggressively (i.e
> start pulling the data as & when they are available). In this case, the
> number of mapIds that are pulled from same host remains at 1. This causes
> lots of connections to be established.
> Number of connections can be reduced a lot if ShuffleHandler supports
> Keep-Alive.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
