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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-1381) The distance between sync blocks in SequenceFiles should be configurable rather than hard coded to 2000 bytes
Date Sat, 03 Sep 2011 08:48:09 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1381?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Harsh J updated HADOOP-1381:
----------------------------

    Release Note: Made sync interval of sequencefiles configurable and raised default from
100 bytes to 100 kilobytes, to optimize for large files.  (was: Made sync interval of sequencefiles
configurable and raised default from 2000 bytes to 100 kilobytes, to optimize for large files.)
          Status: Patch Available  (was: Open)

Patch available for review and commit (to 0.23+).

> The distance between sync blocks in SequenceFiles should be configurable rather than
hard coded to 2000 bytes
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1381
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1381
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: io
>    Affects Versions: 0.22.0
>            Reporter: Owen O'Malley
>            Assignee: Harsh J
>             Fix For: 0.23.0
>
>         Attachments: HADOOP-1381.r1.diff, HADOOP-1381.r2.diff, HADOOP-1381.r3.diff, HADOOP-1381.r4.diff
>
>
> Currently SequenceFiles put in sync blocks every 2000 bytes. It would be much better
if it was configurable with a much higher default (1mb or so?).

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