If map output is not found, shuffle runs in tight loop
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Key: MAPREDUCE-3418
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3418
Project: Hadoop Map/Reduce
Issue Type: Bug
Affects Versions: 0.23.0
Reporter: John George
Sharad Agarwal bumped into this while simulating fetch failures.
Removed the map output directory. Shuffle runs in tight loop throwing
:
2011-06-01 09:02:20,511 WARN org.apache.hadoop.mapreduce.task.reduce.Fetcher:
Invalid map id
java.lang.IllegalArgumentException: TaskAttemptId string : TTP/1.1 500 Internal
Server Error
Content-Type: text/plain; charset=UTF is not properly formed
at org.apache.hadoop.mapreduce.TaskAttemptID.forName(TaskAttemptID.java:174)
at
org.apache.hadoop.mapreduce.task.reduce.Fetcher.copyMapOutput(Fetcher.java:284)
at
org.apache.hadoop.mapreduce.task.reduce.Fetcher.copyFromHost(Fetcher.java:251)
at org.apache.hadoop.mapreduce.task.reduce.Fetcher.run(Fetcher.java:149)
Fetch failure is not triggered.
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