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If the target expression of a runtime filter evaluates to a non-NULL value for outer-join non-matches, then assigning the filter below the nullable side of an outer join may lead to incorrect query results. See IMPALA-6286 for an example and explanation. This patch adds a conservative check that prevents the creation of runtime filters that could potentially have such incorrect targets. Some safe opportunities are deliberately missed to keep the code simple. See RuntimeFilterGenerator#getTargetSlots(). Testing: - added planner tests which passed locally Change-Id: I88153eea9f4b5117df60366fad2bd91776b95298 Reviewed-on: http://gerrit.cloudera.org:8080/8783 Reviewed-by: Alex Behm <alex.behm@cloudera.com> Tested-by: Impala Public Jenkins
This directory contains Impala test workloads. The directory layout for the workloads should follow: workloads/ <data set name>/<data set name>_dimensions.csv <- The test dimension file <data set name>/<data set name>_core.csv <- A test vector file <data set name>/<data set name>_pairwise.csv <data set name>/<data set name>_exhaustive.csv <data set name>/queries/<query test>.test <- The queries for this workload