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From "Wang Xu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5729) FSEditLog.open should stop going on if cannot open any directory
Date Wed, 29 Apr 2009 14:57:30 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5729?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12704140#action_12704140
] 

Wang Xu commented on HADOOP-5729:
---------------------------------

I modified the patch to call processIOError() instead of exit directly if no editStream were
opened.

> FSEditLog.open should stop going on if cannot open any directory
> ----------------------------------------------------------------
>
>                 Key: HADOOP-5729
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5729
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.19.1
>         Environment: CentOS 5.2, jdk 1.6, hadoop 0.19.1
>            Reporter: Wang Xu
>            Assignee: Wang Xu
>             Fix For: 0.19.2
>
>         Attachments: fseditlog-open.patch
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> FSEditLog.open will be invoked when SecondaryNameNode doCheckPoint,
> If no dir is opened successfully, it only prints some WARN messages in log,
> and goes on running. 
> However, it causes the editStreams becomes empty and cannot by synced 
> in. And if editStreams were decreased to 0 when exceptions occured during
> logsync, NameNode would print FATAL log message and halt itself. Hence,
> we think it should also stopped itself at that time.

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