[ https://issues.apache.org/jira/browse/MAPREDUCE-6222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ray Chiang updated MAPREDUCE-6222: ---------------------------------- Attachment: MAPREDUCE-6222.006.patch Fix for nestLevel/indentation issue. Cleans up exceptions showing up in the log file. > HistoryServer Hangs Processing Large Jobs > ----------------------------------------- > > Key: MAPREDUCE-6222 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-6222 > Project: Hadoop Map/Reduce > Issue Type: Bug > Reporter: Andrew Johnson > Assignee: Ray Chiang > Attachments: JHS New Display Top.png, JHS Original Display Top.png, > MAPREDUCE-6222.001.patch, MAPREDUCE-6222.002.patch, MAPREDUCE-6222.003.patch, > MAPREDUCE-6222.005.patch, MAPREDUCE-6222.006.patch, head.jhist, > historyserver_jstack.txt > > > I'm encountering an issue with the Mapreduce HistoryServer processing the > history files for large jobs. This has come up several times with for jobs > with around 60000 total tasks. When the HistoryServer loads the .jhist file > from HDFS for a job of that size (which is usually around 500 Mb), the > HistoryServer's CPU usage spiked and the UI became unresponsive. After about > 10 minutes I restarted the HistoryServer and it was behaving normally again. > The cluster is running CDH 5.3 (2.5.0-cdh5.3.0). I've attached the output of > jstack from a time this was occurring. -- This message was sent by Atlassian JIRA (v6.3.4#6332)