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Posted to mapreduce-issues@hadoop.apache.org by "Alejandro Abdelnur (JIRA)" <ji...@apache.org> on 2012/12/14 00:08:16 UTC
[jira] [Commented] (MAPREDUCE-2454) Allow external sorter plugin
for MR
[ https://issues.apache.org/jira/browse/MAPREDUCE-2454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13531616#comment-13531616 ]
Alejandro Abdelnur commented on MAPREDUCE-2454:
-----------------------------------------------
I've asked Asokan for a preliminary patch with all the subtasks for MAPREDUCE-2454 and run gridmix both on trunk and on the patch in a 35 machines cluster. The trace had ~1000 jobs. I've done 2 runs with trunk and 2 runs with the patch.
TRUNK:
Time spent in simulation: 43mins, 31sec
Time spent in simulation: 41mins, 28sec
MAPREDUCE-2454:
Time spent in simulation: 42mins, 48sec
Time spent in simulation: 40mins, 8sec
> Allow external sorter plugin for MR
> -----------------------------------
>
> Key: MAPREDUCE-2454
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2454
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Affects Versions: 2.0.0-alpha, 3.0.0, 2.0.2-alpha
> Reporter: Mariappan Asokan
> Assignee: Mariappan Asokan
> Priority: Minor
> Labels: features, performance, plugin, sort
> Attachments: HadoopSortPlugin.pdf, HadoopSortPlugin.pdf, KeyValueIterator.java, MapOutputSorterAbstract.java, MapOutputSorter.java, mapreduce-2454-modified-code.patch, mapreduce-2454-modified-test.patch, mapreduce-2454-new-test.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454-protection-change.patch, mr-2454-on-mr-279-build82.patch.gz, MR-2454-trunkPatchPreview.gz, ReduceInputSorter.java
>
>
> Define interfaces and some abstract classes in the Hadoop framework to facilitate external sorter plugins both on the Map and Reduce sides.
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