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From "Todd Lipcon (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3020) Auto-logSync based on edit log buffer size broken
Date Thu, 01 Mar 2012 20:55:59 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13220354#comment-13220354
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Todd Lipcon commented on HDFS-3020:
-----------------------------------

The latest patch was against a non-trunk branch so it didn't apply quite cleanly.
I fixed this findbugs error already on the HA branch which we will merge soon.
                
> Auto-logSync based on edit log buffer size broken
> -------------------------------------------------
>
>                 Key: HDFS-3020
>                 URL: https://issues.apache.org/jira/browse/HDFS-3020
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.22.0, 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Critical
>             Fix For: 0.24.0, 0.23.3
>
>         Attachments: hdfs-3020.txt, hdfs-3020.txt, hdfs-3020.txt
>
>
> HDFS-1112 added a feature whereby the edit log automatically calls logSync() if the buffered
data crosses a threshold. However, the code checks {{bufReady.size()}} rather than {{bufCurrent.size()}}
-- which is incorrect since the writes themselves go into {{bufCurrent}}.

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