[MAPREDUCE-1961] [gridmix3] ConcurrentModificationException when shutting down Gridmix

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.22.0
• Component/s: contrib/gridmix
• Hadoop Flags: Reviewed
• Assignee: Hong Tang
• Reporter: Hong Tang
• Created: 23/Jul/10 00:47
• Updated: 12/Dec/11 06:18
• Resolved: 12/Aug/10 08:49

Description

We observed the following exception occasionally at the end of the Gridmix run:

Exception in thread "StatsCollectorThread" java.util.ConcurrentModificationException
          at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
          at java.util.AbstractList$Itr.next(AbstractList.java:343)
          at org.apache.hadoop.mapred.gridmix.Statistics$StatCollector.updateAndNotifyClusterStatsListeners(Statistics.java:220)
          at org.apache.hadoop.mapred.gridmix.Statistics$StatCollector.run(Statistics.java:205)