tree 2c21bf0e78cacf43c05430f6743268a4b70530d9
parent 72efec9bc65897f0497e123c657a3550e1145296
author Tim Armstrong <tarmstrong@cloudera.com> 1571356818 -0700
committer Impala Public Jenkins <impala-public-jenkins@cloudera.com> 1572926180 +0000

IMPALA-9027: planner fixes for mt_dop

* Update the distributed planner to reflect that broadcast join tables
  are replicated in all fragments.
* Did a pass over the planner code looking at call sites of
  getNumNodes() to confirm that they shouldn't be replaced by
  getNumInstances()

Testing:
* Updated affected planner test where PARALLELPLANS had a
  different join strategy.
* Added a targeted test to mem-limit-broadcast-join.test to
  show that mt_dop affects join mode.
* Ran exhaustive tests.

Change-Id: I23395c2dadf6be0e8be99706ca3ab5f4964cbcf9
Reviewed-on: http://gerrit.cloudera.org:8080/14522
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>