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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4993) fsck can fail if a file is renamed or deleted
Date Sat, 10 Aug 2013 11:33:52 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13735855#comment-13735855

Hudson commented on HDFS-4993:

FAILURE: Integrated in Hadoop-Hdfs-trunk #1487 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1487/])
HDFS-4993. Fsck can fail if a file is renamed or deleted. Contributed by Robert Parker. (kihwal:
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NamenodeFsck.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFsck.java

> fsck can fail if a file is renamed or deleted
> ---------------------------------------------
>                 Key: HDFS-4993
>                 URL: https://issues.apache.org/jira/browse/HDFS-4993
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 3.0.0, 2.1.0-beta, 0.23.9
>            Reporter: Kihwal Lee
>            Assignee: Robert Parker
>             Fix For: 3.0.0, 0.23.10, 2.1.1-beta
>         Attachments: HDFS-4993-branch_0.23.patch, HDFS-4993.patch
> In NamenodeFsck#check(), the getListing() and getBlockLocations() are not synchronized,
so the file deletions or renames at the right moment can cause FileNotFoundException and failure
of fsck.
> Instead of failing, fsck should continue. Optionally it can record file system modifications
it encountered, but since most modifications during fsck are not detected, there might be
little value in recording these specifically.

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