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https://issues.apache.org/jira/browse/HADOOP-3366?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Devaraj Das updated HADOOP-3366:
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Attachment: 3366.reducetask.patch
Here is a patch for just the ReduceTask.java that outlines the synchronization
that we were thinking about... Its a very quickly written patch.. So don't be
surprised if you see glaring issues (e.g. i could have used a AtomicBoolean
instead of Boolean) but it gives the idea.. This looks much simple I think (i
hope i didn't miss some cases where it absolutely won't work).
> Shuffle/Merge improvements
> --------------------------
>
> Key: HADOOP-3366
> URL: https://issues.apache.org/jira/browse/HADOOP-3366
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Reporter: Arun C Murthy
> Assignee: Arun C Murthy
> Fix For: 0.18.0
>
> Attachments: 3366.1.patch, 3366.1.patch, 3366.reducetask.patch,
> HADOOP-3366_0_20080605.patch, ifile.patch
>
>
> This is intended to be a meta-issue to track various improvements to
> shuffle/merge in the reducer.
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