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https://issues.apache.org/jira/browse/HDFS-7131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14149195#comment-14149195
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Hudson commented on HDFS-7131:
------------------------------
SUCCESS: Integrated in Hadoop-Hdfs-trunk #1883 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/1883/])
HDFS-7131. During HA upgrade, JournalNode should create a new committedTxnId
file in the current directory. Contributed by Jing Zhao. (jing: rev
e9c37de485f8d4dcb04afb0d4cb887cc09d317c9)
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/server/JournalNode.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestDFSUpgradeWithHA.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/server/Journal.java
> During HA upgrade, JournalNode should create a new committedTxnId file in the
> current directory
> -----------------------------------------------------------------------------------------------
>
> Key: HDFS-7131
> URL: https://issues.apache.org/jira/browse/HDFS-7131
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: qjm
> Affects Versions: 2.4.0
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Fix For: 3.0.0, 2.6.0
>
> Attachments: HDFS-7131.000.patch, HDFS-7131.001.patch
>
>
> Currently while doing HA upgrade, we do not create a new committedTxnId file
> in the new current directory of JournalNode. And before we have the fix in
> HDFS-7042, since the file channel is never closed, for any new journal we're
> actually updating the committedTxnId file in the previous directory. This can
> cause NN to fail to start while rollback.
> HDFS-7042 fixes the main part of the issue: the file channel inside of the
> committedTxnId object gets closed thus later a new file can be created in the
> current directory. But maybe it is still better to copy the content file
> during the upgrade so that we can always use it for sanity check.
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