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https://reviews.apache.org/r/18557/
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Review request for Tajo.
Bugs: TAJO-638
https://issues.apache.org/jira/browse/TAJO-638
Repository: tajo
Description
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I've attached the updated patch. In QueryUnitAttempt, the state machine already
deals with TA_UPDATE event at TA_ASSIGNED. So, this error must not be incurred
at that situation. I don't know the exact problem. I'll continue to observe
this problem.
Regardless of the above issue, this report includes additional issue for error
handling. If QueryUnitAttempt faces such a situation, Query will be hang. In
order to eliminate the problem, in this patch, I've added some error handling
code to QueryUnitAttempt::handle. When a exception occurs in the situation, it
will abort the query without hanging.
Diffs
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tajo-core/tajo-core-backend/src/main/java/org/apache/tajo/master/querymaster/QueryUnitAttempt.java
aac5e37
Diff: https://reviews.apache.org/r/18557/diff/
Testing
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mvn clean install
Thanks,
Hyunsik Choi
