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Posted to issues@tez.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2014/10/29 18:16:33 UTC

[jira] [Created] (TEZ-1719) Allow IFile reducer merge-sort to disable crc32 checksums

Gopal V created TEZ-1719:
----------------------------

             Summary: Allow IFile reducer merge-sort to disable crc32 checksums
                 Key: TEZ-1719
                 URL: https://issues.apache.org/jira/browse/TEZ-1719
             Project: Apache Tez
          Issue Type: Bug
    Affects Versions: 0.6.0
            Reporter: Gopal V


Next-gen filesystems like BTRFS and ZFS provide their own checksumming for disk data.

Using PureJavaCrc32 for data written for temporary spills to such filesystems is a complete waste of CPU resources.



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