Start times for some tasks are missing from task reports after job tracker
restart
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Key: HADOOP-4323
URL: https://issues.apache.org/jira/browse/HADOOP-4323
Project: Hadoop Core
Issue Type: Bug
Components: mapred
Affects Versions: 0.19.0
Reporter: Hemanth Yamijala
When a JobTracker with the {{mapred.jobtracker.restart.recover}} option turned
on, restarts, it recovers task statuses from all tasks recorded in the history
for running jobs. Task trackers rejoin the restarted JobTracker and report the
statuses of the tasks they had last run. These tasks' start time is set to 0 in
the task reports on the restarted JobTracker. This is as seen in the web UI, or
from the value of {{TaskReport.startTime}} retrieved from the job client.
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