Jason Fehr created IMPALA-13965:
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Summary: User/Group Quote Not Enforced Unless Executors Available
Key: IMPALA-13965
URL: https://issues.apache.org/jira/browse/IMPALA-13965
Project: IMPALA
Issue Type: Bug
Reporter: Jason Fehr
Assignee: Jason Fehr
When an Impala cluster has no executors (e.g. the only nodes in the cluster are
coordinator, statestored, and catalogd), then user/group admission quotas are
not applied. Users can submit as many queries as they like. All queries are
queued with the message "Query queued. Latest queuing reason: Waiting for
executors to start. Only DDL queries and queries scheduled only on the
coordinator (either NUM_NODES set to 1 or when small query optimization is
triggered) can currently run."
Once executors are added to the cluster, all queued queries run immediately
even if the number of queries admitted exceeds a user/group admission control
quota limit.
Steps to Replicate:
1. Start 1 coordinator configured to allow 2 queries for user.
2. Submit a query using impala-shell in three separate terminal windows all
connected to the coordinator.
3. Start 1 Impala executor adding it to the existing cluster.
4. Once the executor became available, all three queries run at the same time
and finish within a few hundred milliseconds of each other.
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