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https://issues.apache.org/jira/browse/HDFS-5476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13818129#comment-13818129
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Hudson commented on HDFS-5476:
------------------------------
FAILURE: Integrated in Hadoop-Mapreduce-trunk #1604 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1604/])
HDFS-5476. Snapshot: clean the blocks/files/directories under a renamed
file/directory while deletion. Contributed by Jing Zhao. (jing9:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1540142)
* /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/INodeReference.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeDirectoryWithSnapshot.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeFileUnderConstructionWithSnapshot.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeFileWithSnapshot.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestRenameWithSnapshots.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotBlocksMap.java
> Snapshot: clean the blocks/files/directories under a renamed file/directory
> while deletion
> ------------------------------------------------------------------------------------------
>
> Key: HDFS-5476
> URL: https://issues.apache.org/jira/browse/HDFS-5476
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.2.0
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Fix For: 2.3.0
>
> Attachments: HDFS-5476.001.patch
>
>
> Currently DstReference#destroyAndCollectBlocks may fail to clean the subtree
> under the DstReference node for file/directory/snapshot deletion.
> Use case 1:
> # rename under-construction file with 0-sized blocks after snapshot.
> # delete the renamed directory.
> We need to make sure we delete the 0-sized block.
> Use case 2:
> # create snapshot s0 for /
> # create a new file under /foo/bar/
> # rename foo --> foo2
> # create snapshot s1
> # delete bar and foo2
> # delete snapshot s1
> We need to make sure we delete the file under /foo/bar since it is not
> included in snapshot s0.
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