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Hudson commented on YARN-4041: ------------------------------ FAILURE: Integrated in Hadoop-Mapreduce-trunk-Java8 #576 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/576/]) YARN-4041. Slow delegation token renewal can severely prolong RM (jlowe: rev d3a34a4f388155f6a7ef040e244ce7be788cd28b) * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/RMAppImpl.java * hadoop-yarn-project/CHANGES.txt * 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/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMRestart.java > Slow delegation token renewal can severely prolong RM recovery > -------------------------------------------------------------- > > Key: YARN-4041 > URL: https://issues.apache.org/jira/browse/YARN-4041 > Project: Hadoop YARN > Issue Type: Bug > Components: resourcemanager > Affects Versions: 2.6.0 > Reporter: Jason Lowe > Assignee: Sunil G > Fix For: 2.7.2 > > Attachments: 0001-YARN-4041.patch, 0002-YARN-4041.patch, > 0003-YARN-4041.patch, 0004-YARN-4041.patch, 0005-YARN-4041.patch > > > When the RM does a work-preserving restart it synchronously tries to renew > delegation tokens for every active application. If a token server happens to > be down or is running slow and a lot of the active apps were using tokens > from that server then it can have a huge impact on the time it takes the RM > to process the restart. -- This message was sent by Atlassian JIRA (v6.3.4#6332)