Rajat Khandelwal created LENS-1345:
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Summary: Deadlock in jdbc query status update
Key: LENS-1345
URL: https://issues.apache.org/jira/browse/LENS-1345
Project: Apache Lens
Issue Type: Bug
Reporter: Rajat Khandelwal
Assignee: Rajat Khandelwal
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.
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