Quanlong Huang created IMPALA-9123:
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Summary: Detect DDL hangs in tests
Key: IMPALA-9123
URL: https://issues.apache.org/jira/browse/IMPALA-9123
Project: IMPALA
Issue Type: Test
Reporter: Quanlong Huang
Currently, we detect query hangs in tests by using execute_async() and
wait_for_finished_timeout() of BeeswaxConnection together.
E.g.
[https://github.com/apache/impala/blob/3.3.0/tests/authorization/test_grant_revoke.py#L334-L335]
{code:python}
handle = self.client.execute_async("invalidate metadata")
assert self.client.wait_for_finished_timeout(handle, timeout=60)
{code}
However, execute_async() won't return if the DDL is in CREATED state which is
usually when DDL hangs. See the implementation of query() interface for Beeswax
protocol:
https://github.com/apache/impala/blob/3.3.0/be/src/service/impala-beeswax-server.cc#L52
So wait_for_finished_timeout() don't run and the test is stuck in
execute_async().
We need to find a elegant way to detect DDL hangs and cancel the DDLs in
CREATED state.
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