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Posted to common-issues@hadoop.apache.org by "David Mollitor (JIRA)" <ji...@apache.org> on 2019/05/10 18:58:00 UTC

[jira] [Created] (HADOOP-16307) Intern User Name and Group Name in FileStatus

David Mollitor created HADOOP-16307:
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             Summary: Intern User Name and Group Name in FileStatus
                 Key: HADOOP-16307
                 URL: https://issues.apache.org/jira/browse/HADOOP-16307
             Project: Hadoop Common
          Issue Type: Improvement
          Components: fs
    Affects Versions: 3.3.0
            Reporter: David Mollitor
            Assignee: David Mollitor
             Fix For: 3.3.0


Client is going OOM with large directory listing {{ClientNamenodeProtocolTranslatorPB#getListing}}

I captured a memory dump and noted that each and every {{LocatedFileStatus}} has its own copy of the user name and group name.  It is sucking down a lot of memory.



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