[MAPREDUCE-2511] Progress reported by map tasks of a map-only job is incorrect

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 0.23.0
• Assignee: Amar Kamat
• Reporter: Amar Kamat
• Created: 18/May/11 09:43
• Updated: 23/May/11 17:15
• Resolved: 23/May/11 17:15

Description

For a map task of a map-reduce job, the progress bar is (logically) split into 2 distinct phases
1. Map Phase
2. Sort Phase

The map phase manages 66% of the overall tasks progress while the sort phase governs the rest i.e 33%.

For a map task of a map-only job, there is no sort phase. Hence the entire map phase should govern 100% of the task's progress. Currently, the progress bar is split divided into 66%-33% irrespective of whether the job has reducers or not (i.e whether there is a sort phase or not).

Issue Links

• is part of: MAPREDUCE-2492 [MAPREDUCE] The new MapReduce API should make available task's progress to the task