[HADOOP-3010] ConcurrentModificationException from org.apache.hadoop.ipc.Server$Responder in JobTracker

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.16.1
• Fix Version/s: 0.16.3
• Component/s: ipc
• Hadoop Flags: Reviewed
• Assignee: Raghu Angadi
• Reporter: Amar Kamat
• Created: 13/Mar/08 06:42
• Updated: 17/Apr/08 05:28
• Resolved: 03/Apr/08 18:04

Description

I see lot of these in my JobTracker log

WARN org.apache.hadoop.ipc.Server: Exception in Responder java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
        at java.util.HashMap$KeyIterator.next(HashMap.java:827)
        at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1010)
        at org.apache.hadoop.ipc.Server$Responder.run(Server.java:475)