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Posted to common-issues@hadoop.apache.org by "Colin Patrick McCabe (JIRA)" <ji...@apache.org> on 2014/05/11 00:13:14 UTC

[jira] [Created] (HADOOP-10587) Use a thread-local cache in TokenIdentifier#getBytes to avoid creating many DataOutputBuffer objects

Colin Patrick McCabe created HADOOP-10587:
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             Summary: Use a thread-local cache in TokenIdentifier#getBytes to avoid creating many DataOutputBuffer objects
                 Key: HADOOP-10587
                 URL: https://issues.apache.org/jira/browse/HADOOP-10587
             Project: Hadoop Common
          Issue Type: Improvement
    Affects Versions: 2.4.0
            Reporter: Colin Patrick McCabe
            Assignee: Colin Patrick McCabe
            Priority: Minor
         Attachments: HADOOP-10587.001.patch

We can use a thread-local cache in TokenIdentifier#getBytes to avoid creating many DataOutputBuffer objects.  This will reduce our memory usage (for example, when loading edit logs), and help prevent OOMs.



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