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Posted to hdfs-issues@hadoop.apache.org by "Suresh Srinivas (JIRA)" <ji...@apache.org> on 2012/11/15 20:16:13 UTC

[jira] [Commented] (HDFS-4053) Increase the default block size

    [ https://issues.apache.org/jira/browse/HDFS-4053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13498255#comment-13498255 ] 

Suresh Srinivas commented on HDFS-4053:
---------------------------------------

Please address this comment:
bq. please update the release note about the new behavior.
                
> Increase the default block size
> -------------------------------
>
>                 Key: HDFS-4053
>                 URL: https://issues.apache.org/jira/browse/HDFS-4053
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>             Fix For: 3.0.0
>
>         Attachments: hdfs-4053.txt, hdfs-4053.txt, hdfs-4053.txt
>
>
> The default HDFS block size ({{dfs.blocksize}}) has been 64mb forever. 128mb works well in practice on today's hardware configurations, most clusters I work with use it or higher (eg 256mb). Let's bump to 128mb in trunk for v3.

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