[HADOOP-4112] Got ArrayOutOfBound exception while analyzing the job history

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.19.0
• Fix Version/s: 0.19.0
• Hadoop Flags: Reviewed
• Assignee: Amareshwari Sriramadasu
• Reporter: Amar Kamat
• Created: 08/Sep/08 05:20
• Updated: 08/Jul/09 16:52
• Resolved: 12/Sep/08 14:46

Description

HADOOP-3150 introduced 2 new type of tasks called the cleanup tasks. These are logged to history either as map tasks or reduce tasks. The number of maps/reducers is also logged to history. Since the number of maps will be less than the total number of map tasks logged to history (actual num maps + cleanup tasks), I think thats the reason for this exception. The important question is to investigate the effect of HADOOP-3150 on job history and code related to it.

Issue Links

• blocks: HADOOP-3245 Provide ability to persist running jobs (extend HADOOP-1876)
• blocks: HADOOP-2165 Augment JobHistory to store tasks' userlogs