[ https://issues.apache.org/jira/browse/MAPREDUCE-1685?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vinod K V updated MAPREDUCE-1685: --------------------------------- Affects Version/s: 0.20.1 Most of these debug statements are in JobTracker/JobInProgress/CapacityTaskScheduler. It's tested on 0.20 clusters. > Debug statements affecting performance of JobTracker.heartbeat > -------------------------------------------------------------- > > Key: MAPREDUCE-1685 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-1685 > Project: Hadoop Map/Reduce > Issue Type: Bug > Affects Versions: 0.20.1 > Reporter: Vinod K V > > Several debug statements that come in the critical section in > JobTracker.heartbeat() are not protected by a LOG.isDebugEnabled() and so > incur non-trivial costs, in the order of 15% of the total heartbeat > processing time. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.