clintropolis commented on issue #8822: optimize numeric column null value checking for low filter selectivity (more rows) URL: https://github.com/apache/incubator-druid/pull/8822#issuecomment-550030106 >For example, if we're doing a longSum operation on a column, what would the cost per row be, and what would the percentage overhead of this check be? The benchmark added in this PR can't determine that, all I can provide is the fixed cost per row of having nulls. That seems useful to know, but also time intensive so I might not get to it as part of this PR.
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