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Posted to mapreduce-issues@hadoop.apache.org by "Ning Zhang (JIRA)" <ji...@apache.org> on 2011/06/06 06:19:47 UTC

[jira] [Commented] (MAPREDUCE-2446) HCE 2.0

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13044703#comment-13044703 ] 

Ning Zhang commented on MAPREDUCE-2446:
---------------------------------------

Dong, nice results. Can you elaborate more on what are the additional changes to HCE v1 (MAPREDUCE-1270)? Was the 130% speedup due to a new implementation of shuffling and sorting in C++?

> HCE 2.0
> -------
>
>                 Key: MAPREDUCE-2446
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2446
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: contrib/streaming, pipes, task
>            Reporter: Dong Yang
>
> Enhancing MapReduce by Task-level Optimization. Except for yielding speedups of up to 130% on original Streaming Program, Hce 2.0 provides some more flexible programming interfaces including c++, java, python, etc.

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