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The bug: Evaluating !empty() predicates at non-scan nodes interacts poorly with our BE projection of collection slots. For example, rows could incorrectly be filtered if a !empty() predicate is assigned to a plan node that comes after the unnest of the collection that also performs the projection. The fix: This patch reworks the generation of !empty() predicates introduced in IMPALA-2663 for correctness purposes. The predicates are generated in cases where we can ensure that they will be assigned only by the parent scan, and no other plan node. The conditions are as follows: - collection table ref is relative and non-correlated - collection table ref represents the rhs of an inner/cross/semi join - collection table ref's parent tuple is not outer joined Change-Id: Ie975ce139a103285c4e9f93c59ce1f1d2aa71767 Reviewed-on: http://gerrit.cloudera.org:8080/2399 Reviewed-by: Alex Behm <alex.behm@cloudera.com> Reviewed-by: Silvius Rus <srus@cloudera.com> Tested-by: Internal 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