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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2020/02/27 05:43:24 UTC
[GitHub] [druid] clintropolis commented on issue #9425: allow optimization
of single multi-value column input expr with repeated identifier
clintropolis commented on issue #9425: allow optimization of single multi-value column input expr with repeated identifier
URL: https://github.com/apache/druid/pull/9425#issuecomment-591793203
>Can you think of a way to add a test? (The results don't change, we were just missing a performance optimization. We don't have a perf test framework yet, but even without one, any ideas?)
It is pretty ugly, but I added a test to confirm that `SingleStringInputDimensionSelector` is chosen over `MultiValueExpressionDimensionSelector` for selectors with capabilities that are compatible with the optimization.
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