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Hudson commented on YARN-4987: ------------------------------ SUCCESS: Integrated in Hadoop-trunk-Commit #9876 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/9876/]) YARN-4987. Read cache concurrency issue between read and evict in (junping_du: rev 705286ccaeea36941d97ec1c1700746b74264924) * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timeline-pluginstorage/src/test/java/org/apache/hadoop/yarn/server/timeline/TestEntityGroupFSTimelineStore.java * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timeline-pluginstorage/src/main/java/org/apache/hadoop/yarn/server/timeline/EntityGroupFSTimelineStore.java * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timeline-pluginstorage/src/test/java/org/apache/hadoop/yarn/server/timeline/EntityGroupPlugInForTest.java * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timeline-pluginstorage/src/main/java/org/apache/hadoop/yarn/server/timeline/EntityCacheItem.java > Read cache concurrency issue between read and evict in EntityGroupFS timeline > store > ------------------------------------------------------------------------------------ > > Key: YARN-4987 > URL: https://issues.apache.org/jira/browse/YARN-4987 > Project: Hadoop YARN > Issue Type: Sub-task > Reporter: Li Lu > Assignee: Li Lu > Priority: Critical > Fix For: 2.8.0 > > Attachments: YARN-4987-trunk.001.patch, YARN-4987-trunk.002.patch, > YARN-4987-trunk.003.patch, YARN-4987-trunk.004.patch > > > To handle concurrency issues, key value based timeline storage may return > null on reads that are concurrent to service stop. This is actually caused by > a concurrency issue between cache reads and evicts. Specifically, if the > storage is being read when it gets evicted, the storage may turn into null. > EntityGroupFS timeline store needs to handle this case gracefully. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org