Tim Armstrong created IMPALA-8830:
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Summary: Coordinator-only queries get queued when there are no
executor groups
Key: IMPALA-8830
URL: https://issues.apache.org/jira/browse/IMPALA-8830
Project: IMPALA
Issue Type: Bug
Components: Backend
Reporter: Tim Armstrong
Assignee: Bikramjeet Vig
Reproduction:
{noformat}
tarmstrong@tarmstrong-box:~/Impala/incubator-impala$ start-impala-cluster.py
-s1 --use_exclusive_coordinators;
[localhost:21000] default> select * from tpch.lineitem order by l_orderkey
limit 5;
ERROR: Admission for query exceeded timeout 60000ms in pool default-pool.
Queued reason: No healthy executor groups found for pool default-pool.
[localhost:21000] default> select 1;
ERROR: Admission for query exceeded timeout 60000ms in pool default-pool.
Queued reason: No healthy executor groups found for pool default-pool.
{noformat}
I expected that the second query should run immediately since it doesn't
actually need to be scheduled on any executors. I suspect this may be a
regression from the executor group changes, but didn't confirm.
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