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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5954) Allow proper fsync support for HBase
Date Wed, 01 Aug 2012 22:36:03 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13426966#comment-13426966
] 

Lars Hofhansl commented on HBASE-5954:
--------------------------------------

Sigh... The WAL files would still need to be sync'ed upon blockclose. Since they mix data
from different stores, there's no telling ahead of time. Which leads to:
# global hsync option upon close block for HFiles and Hlogs (makes no sense to sync HLogs
but not HFiles or vice versa)
# global WAL edit hsync option
# hsync CF's WAL edits
# WAL hsync per Put/Delete/Append/Increment/etc

                
> 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
>             Fix For: 0.96.0, 0.94.2
>
>         Attachments: 5954-trunk-hdfs-trunk-v2.txt, 5954-trunk-hdfs-trunk-v3.txt, 5954-trunk-hdfs-trunk-v4.txt,
5954-trunk-hdfs-trunk-v5.txt, 5954-trunk-hdfs-trunk-v6.txt, 5954-trunk-hdfs-trunk.txt, hbase-hdfs-744.txt
>
>


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