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Hudson commented on YARN-2251: ------------------------------ FAILURE: Integrated in Hadoop-Yarn-trunk #604 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/604/]) YARN-2251. Avoid negative elapsed time in JHS/MRAM web UI and services (Contributed by Zhijie Shen) (junping_du: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1607833) * /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt * /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/Times.java * /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/util/TestTimes.java > Avoid negative elapsed time in JHS/MRAM web UI and services > ----------------------------------------------------------- > > Key: YARN-2251 > URL: https://issues.apache.org/jira/browse/YARN-2251 > Project: Hadoop YARN > Issue Type: Bug > Reporter: Zhijie Shen > Assignee: Zhijie Shen > Fix For: 2.6.0 > > Attachments: MAPREDUCE-5940.1.patch, MAPREDUCE-5940.2.patch > > > Recently we observed a rare bug that an elapsed time of a reducer is going to > be negative on JHS web UI and via REST APIs. While the real reason for this > bug seems to be clock asynchronization on different hosts, the web frontend > should have masked the negative values. However, in the current code, > *org.apache.hadoop.mapreduce.v2.app.webapp.dao.** only check whether the > elapsed time is -1 or not. -- This message was sent by Atlassian JIRA (v6.2#6252)