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https://issues.apache.org/jira/browse/TEZ-3140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15169940#comment-15169940
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Jonathan Eagles commented on TEZ-3140:
--------------------------------------
The DataInputByteBuffer extends DataInputStream which has these nasty hidden
buffers. That's why this class needs to be avoided.
{noformat}
private byte bytearr[] = new byte[80];
private char chararr[] = new char[80];
{noformat}
> Reduce AM memory usage while serialization
> ------------------------------------------
>
> Key: TEZ-3140
> URL: https://issues.apache.org/jira/browse/TEZ-3140
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Rohini Palaniswamy
> Assignee: Rohini Palaniswamy
> Fix For: 0.7.1, 0.8.3
>
> Attachments: TEZ-3140-1.patch
>
>
> There is an unnecessary copy of userpayload byte array during
> serialization.
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