xqhe d47d305bf4 IMPALA-11418: A statement that returns at most one row need not to spool results ...

A query that returns at most one row can run more efficiently without
result spooling. If result spooling is enabled, it will set the
minimum memory reservation in PlanRootSink, e.g. 'select 1' minimum
memory reservation is 4MB.

This optimization can reduce the statement's resource reservation and
prevent the exception 'Failed to get minimum memory reservation' when
the host memory limit not available.

Testing:
- Add tests in result-spooling.test

Change-Id: Icd4d73c21106048df68a270cf03d4abd56bd3aac
Reviewed-on: http://gerrit.cloudera.org:8080/18711
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

2022-09-28 05:46:03 +00:00

..

queries/PlannerTest

IMPALA-11418: A statement that returns at most one row need not to spool results

2022-09-28 05:46:03 +00:00

functional-planner_core.csv

Update benchmark tests to run against generic workload, data loading with scale factor, +more

2014-01-08 10:44:22 -08:00

functional-planner_dimensions.csv

Update benchmark tests to run against generic workload, data loading with scale factor, +more

2014-01-08 10:44:22 -08:00

functional-planner_exhaustive.csv

Update benchmark tests to run against generic workload, data loading with scale factor, +more

2014-01-08 10:44:22 -08:00

functional-planner_pairwise.csv

Update benchmark tests to run against generic workload, data loading with scale factor, +more

2014-01-08 10:44:22 -08:00