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https://issues.apache.org/jira/browse/HDFS-9612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15102262#comment-15102262
]
Hudson commented on HDFS-9612:
------------------------------
FAILURE: Integrated in Hadoop-trunk-Commit #9121 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/9121/])
HDFS-9612. DistCp worker threads are not terminated after jobs are done.
(yzhang: rev a9c69ebeb707801071db3cc22bfcd14f87be443a)
*
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/util/WorkRequestProcessor.java
*
hadoop-tools/hadoop-distcp/src/test/java/org/apache/hadoop/tools/util/TestProducerConsumer.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/util/ProducerConsumer.java
> DistCp worker threads are not terminated after jobs are done.
> -------------------------------------------------------------
>
> Key: HDFS-9612
> URL: https://issues.apache.org/jira/browse/HDFS-9612
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: distcp
> Affects Versions: 2.8.0
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Attachments: HDFS-9612.001.patch, HDFS-9612.002.patch,
> HDFS-9612.003.patch, HDFS-9612.004.patch, HDFS-9612.005.patch,
> HDFS-9612.006.patch, HDFS-9612.007.patch, HDFS-9612.008.patch,
> HDFS-9612.009.patch
>
>
> In HADOOP-11827, a producer-consumer style thread pool was introduced to
> parallelize the task of listing files/directories.
> We have a use case where a distcp job is run during the commit phase of a MR2
> job. However, it was found distcp does not terminate ProducerConsumer thread
> pools properly. Because threads are not terminated, those MR2 jobs never
> finish.
> In a more typical use case where distcp is run as a standalone job, those
> threads are terminated forcefully when the java process is terminated. So
> these leaked threads did not become a problem.
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