Show the reducer taskid and map/reduce tasktrackers for "Failed fetch
notification #_ for task attempt..." log messages
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Key: MAPREDUCE-2456
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2456
Project: Hadoop Map/Reduce
Issue Type: Improvement
Affects Versions: 0.20.204.0
Reporter: Jeffrey Naisbitt
Assignee: Jeffrey Naisbitt
Priority: Trivial
Fix For: 0.20.205.0
This jira is to provide more useful log information for debugging the "Too many
fetch-failures" error.
Looking at the JobTracker node, we see messages like this:
"2010-12-14 00:00:06,911 INFO org.apache.hadoop.mapred.JobInProgress: Failed
fetch notification #8 for task
attempt_201011300729_189729_m_007458_0".
I would be useful to see which reducer is reporting the error here.
So, I propose we add the following to these log messages:
1. reduce task ID
2. TaskTracker nodenames for both the mapper and the reducer
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