Jason Fehr created IMPALA-13201:
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Summary: Queries Against System Tables Must Not Be Subject to
Admission Control
Key: IMPALA-13201
URL: https://issues.apache.org/jira/browse/IMPALA-13201
Project: IMPALA
Issue Type: Improvement
Components: be
Reporter: Jason Fehr
Impala system tables are in-memory coordinator-only virtual tables without any
backing of data on disk. Currently, the only system table is
sys.impala_query_live. Since these tables only exist in coordinator memory,
queries that only select from these tables do not need to by subject to
admission control.
Modify Impala so that queries that only reference system tables are not subject
to admission control and can run if there is enough available memory on the
coordinator.
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