hadoop-common-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Harsh J (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-1381) The distance between sync blocks in SequenceFiles should be configurable rather than hard coded to 2000 bytes
Date Thu, 24 Nov 2011 12:42:40 GMT

    [ 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?).

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message