Fang-Yu Rao created IMPALA-9147:
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Summary: The E2E tests in min_max_filters.test do not exercise the
code paths in min-max-filter.cc
Key: IMPALA-9147
URL: https://issues.apache.org/jira/browse/IMPALA-9147
Project: IMPALA
Issue Type: Bug
Components: Backend
Reporter: Fang-Yu Rao
Assignee: Fang-Yu Rao
The E2E tests in min_max_filters.test do not exercise the code paths in
{{min-max-filter.cc}}. This could be verified by commenting out the return
statement atÂ
[https://github.com/apache/impala/blob/master/be/src/util/min-max-filter.cc#L684],
and then run the corresponding E2E tests defined in {{min_max_filters.test}}.
{code:java}
$IMPALA_HOME/bin/impala-py.test
tests/query_test/test_runtime_filters.py::TestMinMaxFilters::test_min_max_filters
{code}
After commenting out that return statement in {{min-max-filter.cc}}, we expect
to hit a DCHECK at
https://github.com/apache/impala/blob/master/be/src/util/min-max-filter.cc#L698.
But according to my observation we are not able to hit that DCHECK, implying
that the test query at
https://github.com/apache/impala/blob/master/testdata/workloads/functional-query/queries/QueryTest/min_max_filters.test#L48-L50
does not trigger the code paths within
https://github.com/apache/impala/blob/master/be/src/util/min-max-filter.cc#L655-L699.
We hence need to improve these E2E tests so that the respective code paths are
exercised.
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