[MAPREDUCE-3834] If multiple hosts for a split belong to the same rack, the rack is added multiple times in the AM request table

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.23.0
• Fix Version/s: 0.23.1
• Component/s: mr-am, mrv2
• Hadoop Flags: Reviewed
• Release Note: Changed MR AM to not add the same rack entry multiple times into the container request table when multiple hosts for a split happen to be on the same rack
• Assignee: Siddharth Seth
• Reporter: Siddharth Seth
• Created: 07/Feb/12 19:47
• Updated: 05/Mar/12 02:49
• Resolved: 08/Feb/12 01:57

Description

Should be added only once - so that the RM doesn't think there's multiple rack local requests for that particular rack.