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https://issues.apache.org/jira/browse/TEZ-4135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17063053#comment-17063053
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Rajesh Balamohan commented on TEZ-4135:
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Sure, TEZ-3645 should be helpful as well in. Will check. Thanks [~jeagles].
"codec.createInputStream" explicitly creates 256KB buffer, but in this case tez
already has info on the decompressed and compressed bytes. So it can reduce the
memory requested in such cases.
> Improve memory allocation when executing in-memory reads
> --------------------------------------------------------
>
> Key: TEZ-4135
> URL: https://issues.apache.org/jira/browse/TEZ-4135
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Rajesh Balamohan
> Priority: Major
> Attachments: Screenshot 2020-03-16 at 6.34.42 PM.jpg
>
>
> !Screenshot 2020-03-16 at 6.34.42 PM.jpg|width=824,height=575!
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