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Posted to common-dev@hadoop.apache.org by "Johan Oskarsson (JIRA)" <ji...@apache.org> on 2009/05/22 18:18:45 UTC
[jira] Updated: (HADOOP-5728) FSEditLog.printStatistics may cause
IndexOutOfBoundsException
[ https://issues.apache.org/jira/browse/HADOOP-5728?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Johan Oskarsson updated HADOOP-5728:
------------------------------------
Resolution: Fixed
Hadoop Flags: [Reviewed]
Status: Resolved (was: Patch Available)
I just committed this. Thanks, Wang!
> FSEditLog.printStatistics may cause IndexOutOfBoundsException
> -------------------------------------------------------------
>
> Key: HADOOP-5728
> URL: https://issues.apache.org/jira/browse/HADOOP-5728
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.19.1
> Environment: jdk 1.6, centOS 5.2 and hadoop 0.19.1
> Reporter: Wang Xu
> Assignee: Wang Xu
> Fix For: 0.19.2
>
> Attachments: editlog-printstatistics.patch
>
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> We met IndexOutOfBoundsException exception when did logSync or rollEditlog,
> the direct reason is the printStatistics of FSEditLog used the first element of
> StringArray editStreams, but does not check whether editStreams is empty when
> it is not null. As below:
> if (editStreams == null ) {
> return;
> }
> .....[snipped]....
> buf.append(" Number of syncs: " + editStreams.get(0).getNumSync());
> the simple solution is to check whether it is empty.
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