[jira] [Commented] (HADOOP-1381) The distance between sync blocks in SequenceFiles should be configurable rather than hard coded to 2000 bytes

["Harsh J (Commented) (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-1381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13156660#comment-13156660 ] 

Harsh J commented on HADOOP-1381:
---------------------------------

Todd,

- The sync _interval_ can be arbitrary I think, can even be 0. Should not be negative, so I'll add a check for that instead. Or do you think its better if we limit the interval to a minimum? Writer tests pass with 0 no problem.
- SYNC_INTERVAL is being used by MAPREDUCE right now, and I'll have to carry this out as a cross-project JIRA+patch.
                
> 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: 0.24.0
>
>         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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