cleanup ExecDriver.progress
---------------------------
Key: HIVE-1580
URL: https://issues.apache.org/jira/browse/HIVE-1580
Project: Hadoop Hive
Issue Type: Bug
Components: Query Processor
Reporter: Joydeep Sen Sarma
Assignee: Joydeep Sen Sarma
a few problems:
- if a job is retired - then counters cannot be obtained and a stack trace is
printed out (from history code). this confuses users
- too many calls to getCounters. after a job has been detected to be finished -
there are quite a few more calls to get the job status and the counters. we
need to figure out a way to curtail this - in busy clusters the gap between the
job getting finished and the hive client noticing is very perceptible and
impacts user experience.
calls to getCounters are very expensive in 0.20 as they grab a jobtracker
global lock (something we have fixed internally at FB)
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