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Junping Du commented on YARN-2251: ---------------------------------- Kick off Jenkins test again. > 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 > 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)