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https://issues.apache.org/jira/browse/HADOOP-5727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shevek updated HADOOP-5727:
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Status: Patch Available (was: Open)
> Faster, simpler id.hashCode() which does not allocate memory
> ------------------------------------------------------------
>
> Key: HADOOP-5727
> URL: https://issues.apache.org/jira/browse/HADOOP-5727
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Reporter: Shevek
> Attachments: 00_id-noallocate.patch
>
>
> Integer.valueOf allocates memory if the integer is not in the object-cache,
> which is the vast majority of cases for the task id. It is possible to
> compute the hash code of an integer without going via the integer cache, and
> hence avoiding allocating memory.
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