Gunther Hagleitner created HIVE-8042:
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Summary: Optionally allow move tasks to run in parallel
Key: HIVE-8042
URL: https://issues.apache.org/jira/browse/HIVE-8042
Project: Hive
Issue Type: Bug
Reporter: Gunther Hagleitner
Assignee: Gunther Hagleitner
hive.exec.parallel allows one to run different stages of a query in parallel.
However that applies only to map-reduce tasks. When using large multi insert
queries there are many MoveTasks that are all executed in sequence on the
client. There's no real reason for that - they could be run in parallel as well
(i.e.: the stage graph captures the dependencies and knows which tasks can
happen in parallel)
Proposal here is to create a new config var:
hive.exec.parallel.movetask
When set to true it run movetasks in parallel also.
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