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From "Luke Lu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5954) Allow proper fsync support for HBase
Date Wed, 16 May 2012 18:09:10 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13276950#comment-13276950
] 

Luke Lu commented on HBASE-5954:
--------------------------------

Thanks for the numbers, Lars! Are you using ext3? I wonder what the numbers would look like
if you enable barrier=1 in the mount options or just use ext4 (with barrier turned on by default).
If the underlying fs doesn't do barrier, the result is somewhat meaningless (you might as
well use hflush).
                
> Allow proper fsync support for HBase
> ------------------------------------
>
>                 Key: HBASE-5954
>                 URL: https://issues.apache.org/jira/browse/HBASE-5954
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>         Attachments: 5954-trunk-hdfs-trunk-v2.txt, 5954-trunk-hdfs-trunk-v3.txt, 5954-trunk-hdfs-trunk.txt,
hbase-hdfs-744.txt
>
>


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