Zach Amsden 77304530f1 IMPALA-5003: Constant propagation in scan conjuncts ...

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>

2017-05-02 01:12:14 +00:00

4.1 KiB

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