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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 Tue, 28 Feb 2012 23:52:55 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13218718#comment-13218718
] 

Todd Lipcon commented on HDFS-3020:
-----------------------------------

Suresh, mind if I address those unnecessary IOEs separately? I want to keep this patch tightly
targeted to avoid unnecessary merge conflicts, etc (applying across 23, trunk, HA)
                
> 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
>         Attachments: 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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