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https://issues.apache.org/jira/browse/HDFS-15421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17147233#comment-17147233
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Hudson commented on HDFS-15421:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #18387 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/18387/])
HDFS-15421. IBR leak causes standby NN to be stuck in safe mode. (aajisaka: rev
c71ce7ac3370e220995bad0ae8b59d962c8d30a7)
* (add)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestUpdateBlockTailing.java
* (delete)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestAddBlockTailing.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirTruncateOp.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java
> IBR leak causes standby NN to be stuck in safe mode
> ---------------------------------------------------
>
> Key: HDFS-15421
> URL: https://issues.apache.org/jira/browse/HDFS-15421
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Reporter: Kihwal Lee
> Assignee: Akira Ajisaka
> Priority: Blocker
> Labels: release-blocker
> Attachments: HDFS-15421-000.patch, HDFS-15421-001.patch,
> HDFS-15421.002.patch, HDFS-15421.003.patch, HDFS-15421.004.patch,
> HDFS-15421.005.patch, HDFS-15421.006.patch, HDFS-15421.007.patch
>
>
> After HDFS-14941, update of the global gen stamp is delayed in certain
> situations. This makes the last set of incremental block reports from append
> "from future", which causes it to be simply re-queued to the pending DN
> message queue, rather than processed to complete the block. The last set of
> IBRs will leak and never cleaned until it transitions to active. The size of
> {{pendingDNMessages}} constantly grows until then.
> If a leak happens while in a startup safe mode, the namenode will never be
> able to come out of safe mode on its own.
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