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From "Daniel Barclay" <dbarc...@maprtech.com>
Subject Review Request 34026: DRILL-2993: Unthrottle at cancel() to fix post-cancelation hangs.
Date Sun, 10 May 2015 22:29:41 GMT

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Review request for drill, Mehant Baid and Parth Chandra.

Bugs: DRILL-2993

Repository: drill-git


Added unthrottling in close().
Cleaned up throttling logic code:
- Applied AtomicBoolean to eliminate race conditions.
- Extracted methods for starting/stopping throttling.
Made small edits to some message:
- Fixed missed, inconsistent ResultsListener log messages.
- Clarified exception message.


  exec/jdbc/src/main/java/org/apache/drill/jdbc/impl/DrillResultSetImpl.java 8ef2af3 

Diff: https://reviews.apache.org/r/34026/diff/


Manually confirmed unthrottling upon cancelation and delivery of messages (via log message)
and confirmed lack of previous hanging behavior on subsequence queries.

Ran regular tests; no new errors.


Daniel Barclay

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