[
https://issues.apache.org/jira/browse/HADOOP-8800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13455609#comment-13455609
]
Dong Xiang commented on HADOOP-8800:
------------------------------------
Looking forward to hearing more details about this proposed feature.
> Dynamic Compress Stream
> -----------------------
>
> Key: HADOOP-8800
> URL: https://issues.apache.org/jira/browse/HADOOP-8800
> Project: Hadoop Common
> Issue Type: New Feature
> Components: io
> Affects Versions: 2.0.1-alpha
> Reporter: yankay
> Labels: patch
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> We use compress in MapReduce in some case because It use CPU to improve IO
> throughput.
> But we can only set one compress algorithm in configure file. The hadoop
> cluster is changing every time. So a compress algorithm may not work well in
> all case.
> Why not provide an algorithm named dynamic. It can change compress level and
> algorithm dynamicly based on performance. Like tcp, it starts up slowly, and
> try run faster and faster. It can make the io faster by choose a more
> suitable compress algorithm.
> I would write a detail design here, and try to submit a patch.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
