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https://issues.apache.org/jira/browse/MAPREDUCE-1593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12846686#action_12846686
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Tamas Sarlos commented on MAPREDUCE-1593:
-----------------------------------------
Re: -1 tests included: MAPREDUCE-1306 introduced a test case,
TestRandomSeedGenerator.java. The current patch does not change the API of
RandomSeedGenerator.java.
> [Rumen] Improvements to random seed generation
> -----------------------------------------------
>
> Key: MAPREDUCE-1593
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1593
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 0.21.0, 0.22.0
> Reporter: Tamas Sarlos
> Assignee: Tamas Sarlos
> Priority: Trivial
> Fix For: 0.21.0, 0.22.0
>
> Attachments: MAPREDUCE-1593-20100311-dup.patch,
> MAPREDUCE-1593-20100311.patch
>
>
> RandomSeedGenerator introduced in MAPREDUCE-1306 could be more efficient by
> reusing the MD5 object across calls. Wrapping the MD5 in a ThreadLocal makes
> the call thread safe as well. Neither of these is an issue with the current
> client, the mumak simulator, but the changes are small and make the code more
> useful in the future. Thanks to Chris Douglas for the suggestion.
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