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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4158) FSDirectory#hasSnapshot will NPE when deleting an empty directory
Date Wed, 07 Nov 2012 01:18:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13492026#comment-13492026

Aaron T. Myers commented on HDFS-4158:

Ah, so you did. It might be better to use INodeDirectory#getChildrenList instead of INodeDirectory#getChildren
and then do a null check. Very minor issue though.
> FSDirectory#hasSnapshot will NPE when deleting an empty directory
> -----------------------------------------------------------------
>                 Key: HDFS-4158
>                 URL: https://issues.apache.org/jira/browse/HDFS-4158
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: name-node
>    Affects Versions: Snapshot (HDFS-2802)
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>         Attachments: HDFS-4158.patch
> The method attempts to iterate over the child list of the directory, but that list may
be null and this isn't handled currently.

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