[MAPREDUCE-3616] Thread pool for launching containers in MR AM not expanding as expected

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.23.1
• Fix Version/s: 0.23.1
• Component/s: mr-am, mrv2, performance
• Hadoop Flags: Reviewed
• Assignee: Vinod Kumar Vavilapalli
• Reporter: Vinod Kumar Vavilapalli
• Created: 04/Jan/12 17:15
• Updated: 19/Jul/12 17:49
• Resolved: 09/Jan/12 22:22

Description

Found this while running some benchmarks on 350 nodes. The thread pool stays at 60 for a long time and only expands to 350 towards the fag end of the job.

Issue Links

• is related to: MAPREDUCE-3389 MRApps loads the 'mrapp-generated-classpath' file with classpath from the build machine