wzhou-code 3fb376ba54 IMPALA-6689: Speed up point lookup for Kudu primary key ...

If all primary key columns of the Kudu table are in equivalence
predicates pushed down to Kudu, Kudu will return at most one row.
In this case, we can adjust the cardinality estimation to speed
up point lookup.
This patch sets the input and output cardinality as 1 if the
number of primary key columns in equivalence predicates pushed
down to Kudu equals the total number of primary key columns of
the Kudu table, hence enable small query optimization.

Testing:
 - Added test cases in following PlannerTest: small-query-opt.test,
   disable-codegen.test and kudu.test.
 - Passed all FE tests, including new test cases.

Change-Id: I4631cd4d1a528a1152b5cdcb268426f2ba1a0c08
Reviewed-on: http://gerrit.cloudera.org:8080/15250
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

2020-02-28 02:03:34 +00:00

..

queries/PlannerTest

IMPALA-6689: Speed up point lookup for Kudu primary key

2020-02-28 02:03:34 +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