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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4128) NPE in FSDir.getBlockInfo
Date Tue, 09 Sep 2008 18:21:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12629564#action_12629564
] 

Raghu Angadi commented on HADOOP-4128:
--------------------------------------

> Question is: is that an appropriate patch? [...]
I think so. This kind of synchronization with volatiles always has these problems...

Also +1 for the attached patch.

listFiles() is called in other places too.. though many of them occur during initialization.

> NPE in FSDir.getBlockInfo
> -------------------------
>
>                 Key: HADOOP-4128
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4128
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.19.0
>            Reporter: Steve Loughran
>            Priority: Minor
>             Fix For: 0.19.0
>
>         Attachments: hadoop-4128.patch
>
>
> This could well be something I've introduced on my variant of the code, although its
a recent arrival in my own tests: an NPE while bringing up a datanode.

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