One more illegal map task been launched when the job almost complete
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Key: HADOOP-4987
URL: https://issues.apache.org/jira/browse/HADOOP-4987
Project: Hadoop Core
Issue Type: Bug
Components: mapred
Affects Versions: 0.19.0
Environment: hadoop 0.19.0
Reporter: Tian Chao
When the job nearly complete, the JobTracker launched one more map task and
quickly complete.
The Last map task is useless and illegal actually. In the following examples,
the job should have 101 map tasks and the taskID begin from
"attempt_200901071109_0001_m_000000". So the TaskID
"attempt_200901071109_0001_m_000101" is out of range.
2009-01-07 11:16:04,435 INFO org.apache.hadoop.mapred.JobTracker: Adding task
'attempt_200901071109_0001_m_000101_0' to tip task_200901071109_0001_m_000101,
for tracker 'tracker_ict.vega2010.org:127.0.0.1/127.0.0.1:40668'
2009-01-07 11:16:05,230 INFO org.apache.hadoop.mapred.JobInProgress: Task
'attempt_200901071109_0001_m_000101_0' has completed
task_200901071109_0001_m_000101 successfully.
2009-01-07 11:16:05,231 INFO org.apache.hadoop.mapred.JobInProgress: Job
job_200901071109_0001 has completed successfully.
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