[MAPREDUCE-1941] Need a servlet in JobTracker to stream contents of the job history file

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.22.0
• Component/s: jobtracker
• Assignee: Srikanth Sundarrajan
• Reporter: Srikanth Sundarrajan
• Created: 14/Jul/10 13:56
• Updated: 21/Jul/14 18:14
• Resolved: 21/Jul/14 18:14

Description

There is no convenient mechanism to retrieve the contents of the job history file. Need a way to retrieve the job history file contents from Job Tracker.

This can perhaps be implemented as a servlet on the Job tracker.

• Create a jsp/servlet that accepts job id as a request parameter
• Stream the contents of the history file corresponding to the job id, if user has permissions to view the job details.

Issue Links

• depends upon: MAPREDUCE-323 Improve the way job history files are managed
• depends upon: MAPREDUCE-291 Optionally a separate daemon should serve JobHistory
• is required by: PIG-1829 "0" value seen in PigStat's map/reduce runtime, even when the job is successful