Tarun Parimi created YARN-9040: ---------------------------------- Summary: LevelDBCacheTimelineStore in ATS 1.5 leaks native memory Key: YARN-9040 URL: https://issues.apache.org/jira/browse/YARN-9040 Project: Hadoop YARN Issue Type: Bug Components: timelineserver Affects Versions: 2.8.0 Reporter: Tarun Parimi Assignee: Tarun Parimi
When LevelDBCacheTimelineStore from YARN-4219 is used as ATS 1.5 entity caching storage, we observe memory leak due to leveldb files even after the fix of YARN-5368 . Top output shows 0.024TB (25GB) RES, even though heap size is only 8GB. {code:java} PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 25519 yarn 20 0 33.024g 0.024t 41468 S 6.2 26.0 21:07.39 /usr/java/default/bin/java -Dproc_timelineserver -Xmx8192m {code} Lsof shows a lot of open timeline-cache.ldb files which are referenced by ATS, even though are deleted (DEL), since they are not present when listing them . {code:java} java 25519 yarn DEL REG 253,28 9438452 /var/yarn/timeline/timelineEntityGroupId_1542280269959_55569_dag_1542280269959_55569_2-timeline-cache.ldb/000007.sst java 25519 yarn DEL REG 253,28 9438438 /var/yarn/timeline/timelineEntityGroupId_1542280269959_55569_dag_1542280269959_55569_2-timeline-cache.ldb/000007.sst java 25519 yarn DEL REG 253,28 9438437 /var/yarn/timeline/timelineEntityGroupId_1542280269959_55569_dag_1542280269959_55569_2-timeline-cache.ldb/000005.sst {code} Looks like LevelDBCacheTimelineStore is not closing these files as the LevelDB DBIterator is not closed. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-dev-h...@hadoop.apache.org