[jira] [Created] (TEZ-3115) Shuffle string handling adds significant memory overhead

[Jason Lowe (JIRA)]

Jason Lowe created TEZ-3115:
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             Summary: Shuffle string handling adds significant memory overhead
                 Key: TEZ-3115
                 URL: https://issues.apache.org/jira/browse/TEZ-3115
             Project: Apache Tez
          Issue Type: Bug
    Affects Versions: 0.7.0
            Reporter: Jason Lowe


While investigating the OOM heap dump from TEZ-3114 I noticed that the 
ShuffleManager and other shuffle-related objects were holding onto many strings 
that added up to over a hundred megabytes of memory.



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