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Posted to issues@tez.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2014/11/04 00:14:38 UTC
[jira] [Commented] (TEZ-1733) TezMerger should sort FileChunks on
decompressed size
[ https://issues.apache.org/jira/browse/TEZ-1733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14195330#comment-14195330 ]
Gopal V commented on TEZ-1733:
------------------------------
[~rajesh.balamohan]: Can you take a look at this change-set?
> TezMerger should sort FileChunks on decompressed size
> -----------------------------------------------------
>
> Key: TEZ-1733
> URL: https://issues.apache.org/jira/browse/TEZ-1733
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.5.2
> Reporter: Gopal V
> Priority: Critical
> Attachments: TEZ-1733.1.patch
>
>
> MAPREDUCE-3685 fixed the Merger sort order for file chunks to use the decompressed size, to cut-down on CPU and IO costs.
> TezMerger needs an equivalent sorted TreeSet which sorts by the data with-in sizes rather than actual file sizes.
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