If map output is not found, shuffle runs in tight loop ------------------------------------------------------
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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira