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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5427) not able to read deleted files from snapshot directly under snapshottable dir after checkpoint and NN restart
Date Tue, 05 Nov 2013 07:21:18 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13813714#comment-13813714
] 

Hudson commented on HDFS-5427:
------------------------------

SUCCESS: Integrated in Hadoop-trunk-Commit #4694 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/4694/])
HDFS-5427. Not able to read deleted files from snapshot directly under snapshottable dir after
checkpoint and NN restart. Contributed by Vinay. (jing9: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1538875)
* /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/FSImageFormat.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotFSImageFormat.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotBlocksMap.java


> not able to read deleted files from snapshot directly under snapshottable dir after checkpoint
and NN restart
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-5427
>                 URL: https://issues.apache.org/jira/browse/HDFS-5427
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: snapshots
>    Affects Versions: 3.0.0, 2.2.0
>            Reporter: Vinay
>            Assignee: Vinay
>            Priority: Blocker
>             Fix For: 2.3.0
>
>         Attachments: HDFS-5427-v2.patch, HDFS-5427.patch, HDFS-5427.patch
>
>
> 1. allow snapshots under dir /foo
> 2. create a file /foo/bar
> 3. create a snapshot s1 under /foo
> 4. delete the file /foo/bar
> 5. wait till checkpoint or do saveNameSpace
> 6. restart NN.
> 7. Now try to read the file from snapshot /foo/.snapshot/s1/bar
> client will get BlockMissingException
> Reason is 
> While loading the deleted file list for a snashottable dir from fsimage, blocks were
not updated in blocksmap



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