Implements constant propagation within conjuncts and applies the
optimization to scan conjuncts and collection conjuncts within Hdfs
scan nodes. The optimization is applied during planning. At scan
nodes in particular, we want to optimize to enable partition pruning.
In certain cases, we might end up with a FALSE conditional, which
now will convert to an EmptySet node.
Testing: Expanded the test cases for the planner to achieve constant
propagation. Added Kudu, datasource, Hdfs and HBase tests to validate
we can create EmptySetNodes.
Change-Id: I79750a8edb945effee2a519fa3b8192b77042cb4
Reviewed-on: http://gerrit.cloudera.org:8080/6389
Tested-by: Impala Public Jenkins
Reviewed-by: Alex Behm <alex.behm@cloudera.com>
There was a missing break in a switch statement leading to bad fallthrough.
An existing test already expected incorrect results. The bug is covered by
expecting correct results.
Change-Id: I5340c2eda813afc032ba72203bd59eb3f2c4f482
Reviewed-on: http://gerrit.cloudera.org:8080/4585
Reviewed-by: Alex Behm <alex.behm@cloudera.com>
Tested-by: Internal Jenkins
Enforces that the planner treats IS NOT DISTINCT FROM as eligible for
hash joins, but does not find the minimum spanning tree of
equivalences for use in optimizing query plans; this is left as future
work.
Change-Id: I62c5300b1fbd764796116f95efe36573eed4c8d0
Reviewed-on: http://gerrit.cloudera.org:8080/710
Reviewed-by: Jim Apple <jbapple@cloudera.com>
Tested-by: Internal Jenkins
