Chris Westin created DRILL-2656:
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Summary: Add ability to specify options for clean shutdown of a
Drillbit
Key: DRILL-2656
URL: https://issues.apache.org/jira/browse/DRILL-2656
Project: Apache Drill
Issue Type: New Feature
Components: Execution - Flow
Affects Versions: 0.8.0
Reporter: Chris Westin
Assignee: Chris Westin
Fix For: 1.0.0
When we shut down a Drillbit, we should provide some options similar to those
available from Oracle's shutdown command (see
https://docs.oracle.com/cd/B28359_01/server.111/b28310/start003.htm#ADMIN11156)
.
At present, in order to avoid problems like DRILL-2654, we try to do a short
wait for executing queries, but that times out after 5 seconds, and doesn't
help with long-running queries.
Someone that is running a long query might be unhappy about losing work for
something that was near completion, so we can do better.
And, in order to avoid spurious cleanup problems and exceptions, we should
explicitly cancel any remaining queries before we do complete the shutdown.
As in the Oracle example, we might have shutdown immediate issue cancellations
to the running queries. A clean shutdown might not have a timeout, or might
allow the specification of a longer timeout, and even when the timeout goes
off, we should still cleanly cancel any remaining queries, and wait for the
cancellations to complete.
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