[jira] [Created] (MAPREDUCE-6169) MergeQueue should release reference to the current item from key and value at the end of the iteration to save memory.

[zhihai xu (JIRA)]

zhihai xu created MAPREDUCE-6169:
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             Summary: MergeQueue should release reference to the current item 
from key and value at the end of the iteration to save memory.
                 Key: MAPREDUCE-6169
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6169
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
            Reporter: zhihai xu
            Assignee: zhihai xu
            Priority: Minor


MergeQueue should release reference to the current item from key and value at 
the end of the iteration to save memory.
these buffers referenced by key and value can be large, which may cause an OOM 
error.



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