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Previously, scanners will assume that there are no conjuncts associated with a scan node for queries with no materialized slots (e.g. count(*)). This is not necessarily the case as one can write queries such as select count(*) from tpch.lineitem where rand() * 10 < 0; or select count(*) from tpch.lineitem where rand() > <a partition column>. In which case, the conjuncts should still be evaluated once per row. This change fixes the problem in the short-circuit handling logic for count(*) to evaluate the conjuncts once per row and only commits a row to the output row batch if the conjuncts evaluate to true. Testing done: Added the example above to the scanner test Change-Id: Ib530f1fdcd2c6de699977db163b3f6eb38481517 Reviewed-on: http://gerrit.cloudera.org:8080/8623 Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com> Reviewed-by: Alex Behm <alex.behm@cloudera.com> Reviewed-by: Dan Hecht <dhecht@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