tree 8dfbe035c9a020a68c635a5b23c7905661c76ed0
parent 07b40283846e83df1a49c8843783297c71214ebe
author Xikui Wang <xkkwww@gmail.com> 1529636535 -0700
committer Xikui Wang <xkkwww@gmail.com> 1530048238 -0700

[NO ISSUE][COMP] Prevent broadcast hint changes left-outer-join semantic

- user model changes: no
- storage format changes: no
- interface changes: no

Details:
The current way of handling broadcast hint can cause a problem in a
certain case. When we have a subquery containing join, the inline
subplan rule will transform it into a left-outer-join. If the join in
the subquery has a broadcast hint and the broadcast side is left, then
the JoinUtils will switch the two branches blindly which can break the
semantic of the left-outer-join.

Change-Id: I522b5f1edf35a1c46f2e2ef1b265049d3c18a575
Reviewed-on: https://asterix-gerrit.ics.uci.edu/2721
Sonar-Qube: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Contrib: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Dmitry Lychagin <dmitry.lychagin@couchbase.com>