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Hudson commented on YARN-2972: ------------------------------ FAILURE: Integrated in Hadoop-Yarn-trunk #779 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/779/]) YARN-2972. DelegationTokenRenewer thread pool never expands. Contributed by Jason Lowe (junping_du: rev 2b4b0e8847048850206f091c6870a02e08cfe836) * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/security/DelegationTokenRenewer.java * hadoop-yarn-project/CHANGES.txt > DelegationTokenRenewer thread pool never expands > ------------------------------------------------ > > Key: YARN-2972 > URL: https://issues.apache.org/jira/browse/YARN-2972 > Project: Hadoop YARN > Issue Type: Bug > Components: resourcemanager > Affects Versions: 2.3.0 > Reporter: Jason Lowe > Assignee: Jason Lowe > Fix For: 2.7.0 > > Attachments: YARN-2972.001.patch > > > DelegationTokenRenewer uses a thread pool to manage token renewals. The > number of threads is configurable, but unfortunately the pool never expands > beyond the hardcoded initial 5 threads because we are using an unbounded > LinkedBlockingQueue. ThreadPoolExecutor only grows the thread pool beyond > the core size when the specified queue is full. -- This message was sent by Atlassian JIRA (v6.3.4#6332)