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https://issues.apache.org/jira/browse/TEZ-3752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16103880#comment-16103880
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Muhammad Samir Khan commented on TEZ-3752:
------------------------------------------

However, this test doesn't actually hit the RLE case. InMemoryWriter has RLE 
turned off since the Writer constructor it calls has rle flag set to false.

> Reduce Object size of InMemoryMapOutput for large jobs
> ------------------------------------------------------
>
>                 Key: TEZ-3752
>                 URL: https://issues.apache.org/jira/browse/TEZ-3752
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Jonathan Eagles
>            Assignee: Muhammad Samir Khan
>         Attachments: TEZ-3752.001.patch
>
>
> Follow-on jira from TEZ-3732. The InMemoryMapOutput has a 
> BoundedByteArrayOutputStream that is only used in the Merged MapOutput case. 



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