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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/52548/
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Review request for lens.
Bugs: LENS-1345
https://issues.apache.org/jira/browse/LENS-1345
Repository: lens
Description
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JDBC query is launched in a thread. On query finish, the thread calls back the
query service to update status, which creates a FinishedQuery instance. In the
constructor, FinishedQuery is fetching result from the jdbc driver, which waits
on the original thread to complete. Basically the thread is waiting for itself.
In the callback, query context is acquired by the thread, and can't be acquired
again. Which means that get calls for this query won't return and will stay
blocked. This can end up blocking all the grizzly threads.
Diffs
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lens-driver-jdbc/src/main/java/org/apache/lens/driver/jdbc/JDBCDriver.java
f805ec6ebccd18de3bfcd0f1ab8626f7330dd6f1
lens-server/src/main/java/org/apache/lens/server/query/QueryExecutionServiceImpl.java
87d7cb0d5036bd0de4361cc146404a7fee478bac
lens-server/src/test/java/org/apache/lens/server/query/TestQueryService.java
3f71aef9ca180d834538604925c71d1d87be8e26
Diff: https://reviews.apache.org/r/52548/diff/
Testing
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Thanks,
Rajat Khandelwal
