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https://issues.apache.org/jira/browse/HDFS-12638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16273887#comment-16273887
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Hudson commented on HDFS-12638:
---
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #13302 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/13302/])
HDFS-12638. Delete copy-on-truncate block along with the original block, (shv:
rev 60fd0d7fd73198fd610e59d1a4cd007c5fcc7205)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFileTruncate.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INode.java
> Delete copy-on-truncate block along with the original block, when deleting a
> file being truncated
> -
>
> Key: HDFS-12638
> URL: https://issues.apache.org/jira/browse/HDFS-12638
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 2.8.2
>Reporter: Jiandan Yang
>Assignee: Konstantin Shvachko
>Priority: Blocker
> Fix For: 2.7.5, 3.1.0, 2.10.0, 2.9.1, 3.0.1, 2.8.4
>
> Attachments: HDFS-12638-branch-2.8.2.001.patch, HDFS-12638.002.patch,
> HDFS-12638.003.patch, HDFS-12638.004.patch, OphanBlocksAfterTruncateDelete.jpg
>
>
> Active NamNode exit due to NPE, I can confirm that the BlockCollection passed
> in when creating ReplicationWork is null, but I do not know why
> BlockCollection is null, By view history I found
> [HDFS-9754|https://issues.apache.org/jira/browse/HDFS-9754] remove judging
> whether BlockCollection is null.
> NN logs are as following:
> {code:java}
> 2017-10-11 16:29:06,161 ERROR [ReplicationMonitor]
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager:
> ReplicationMonitor thread received Runtime exception.
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.blockmanagement.ReplicationWork.chooseTargets(ReplicationWork.java:55)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReplicationWorkForBlocks(BlockManager.java:1532)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReplicationWork(BlockManager.java:1491)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeDatanodeWork(BlockManager.java:3792)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$ReplicationMonitor.run(BlockManager.java:3744)
> at java.lang.Thread.run(Thread.java:834)
> {code}
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