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The is_spool_query_results query option is now supported in Calcite. The returnAtMostOneRow method is now implemented to support this. PlanRootSink is refactored to extract sanitizing query options (a new method sanitizeSpoolingOptions()) out of PlanRootSink.computeResourceProfile(). The bulk of memory bounding calculation is also extracted out to a new class SpoolingMemoryBound. Added "sleep" in ImpalaOperatorTable.java since some EE tests related to result spooling calls sleep() function. Changed ImpalaPlanRel to extends RelNode interface. A sanity test has been added to calcite.test, but the bulk of the testing will be done through the Impala test framework when it is enabled. Testing: - Pass FE tests PlannerTest#testResultSpooling, TpcdsCpuCostPlannerTest, and all java tests under calcite-planner project. - Pass query_test/test_result_spooling.py and custom_cluster/test_result_spooling.py. Co-authored-by: Riza Suminto Change-Id: I5b9bf49e2874ee12de212b892bd898c296774c6f Reviewed-on: http://gerrit.cloudera.org:8080/23562 Reviewed-by: Riza Suminto <riza.suminto@cloudera.com> Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>