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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6647) Edit log corruption when pipeline recovery occurs for deleted file present in snapshot
Date Wed, 09 Jul 2014 23:28:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14056896#comment-14056896
] 

Aaron T. Myers commented on HDFS-6647:
--------------------------------------

The latest patch looks good to me. +1 pending HDFS-6618 being committed and the Jenkins seal
of approval.

> Edit log corruption when pipeline recovery occurs for deleted file present in snapshot
> --------------------------------------------------------------------------------------
>
>                 Key: HDFS-6647
>                 URL: https://issues.apache.org/jira/browse/HDFS-6647
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode, snapshots
>    Affects Versions: 2.4.1
>            Reporter: Aaron T. Myers
>            Assignee: Kihwal Lee
>            Priority: Blocker
>         Attachments: HDFS-6647-failing-test.patch, HDFS-6647.patch, HDFS-6647.v2.patch
>
>
> I've encountered a situation wherein an OP_UPDATE_BLOCKS can appear in the edit log for
a file after an OP_DELETE has previously been logged for that file. Such an edit log sequence
cannot then be successfully read by the NameNode.
> More details in the first comment.



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