Paul Rogers created IMPALA-7780:
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Summary: Rebase PlannerTest expected output for estimates, errors
Key: IMPALA-7780
URL: https://issues.apache.org/jira/browse/IMPALA-7780
Project: IMPALA
Issue Type: Improvement
Components: Frontend
Affects Versions: Impala 3.0
Reporter: Paul Rogers
The front-end includes the {{PlannerTest}} test which works by running a query,
writing the plan to a file, comparing selected parts of the file to expected
results, and flagging if the results differ.
A plan includes some things we test (operators) and some we do not (text of
error messages, value of memory estimates). Over time the expected and actual
files have drifted apart. Example:
{noformat}
Expected: partitions=1/1 files=2 size=54.20MB
Actual: partitions=1/1 files=2 size=54.21MB
{noformat}
While the tests still pass (because we ignore the parts which have drifted), it
is a pain to track down issues because we must learn to manually ignore
"unimportant" differences.
This ticket asks to "rebase" planner tests on the latest results, copying into
the expected results file the current "noise" values from the actual results.
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