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https://issues.apache.org/jira/browse/HDFS-3922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13465578#comment-13465578
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Hudson commented on HDFS-3922:
------------------------------
Integrated in Hadoop-Hdfs-0.23-Build #388 (See
[https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/388/])
HDFS-3922. namenode throws away blocks under construction on restart
(Kihwal Lee via daryn) (Revision 1391150)
Result = UNSTABLE
daryn : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1391150
Files :
*
/hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/CHANGES.txt
*
/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java
*
/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
*
/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFSEditLogLoader.java
> 0.22 and 0.23 namenode throws away blocks under construction on restart
> -----------------------------------------------------------------------
>
> Key: HDFS-3922
> URL: https://issues.apache.org/jira/browse/HDFS-3922
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.22.1, 0.23.3
> Reporter: Kihwal Lee
> Assignee: Kihwal Lee
> Priority: Critical
> Fix For: 0.23.4
>
> Attachments: hdfs-3922.branch-023.patch.txt
>
>
> When reading edits on startup, namenode may throw away blocks under
> construction. This is because the file inode is turned into a "under
> construction" one, but nothing is done to the last block.
> With append/hsync, this is not acceptable because it may drop sync'ed partial
> blocks. In branch 2 and trunk, HDFS-1623 (HA) fixed this issue.
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