Josh Elser created PHOENIX-2500:
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Summary: Small race condition for clients to see application-level
exception when PQS shutting down
Key: PHOENIX-2500
URL: https://issues.apache.org/jira/browse/PHOENIX-2500
Project: Phoenix
Issue Type: Bug
Reporter: Josh Elser
Assignee: Josh Elser
I wrote a little test for PQS where multiple instances sit behind a dumb load
balancer. A client thread runs queries against the load balancer, and another
thread willy-nilly kills PQS instances (chaos-monkey esque).
We noticed that when a PQS instance gets killed while a query is running, a
client might get an exception stemming from the ThreadPool being shut down by
the PhoenixDriver ShutdownHook.
Ideally, the client would just see an HTTP/500-level error or get some sort of
transport-level exception, not an exception with an RejectedExecutionException.
The solution, I think, is to let PQS register its own code to run before
PhoenixDriver closes itself.
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