PERF: fix regression in reductions for boolean/integer data (assume no missing values) #41920
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…o missing values)
jorisvandenbossche
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Performance
This was referenced Jun 10, 2021
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simonjayhawkins
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Jun 10, 2021
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Thanks @jorisvandenbossche I perhaps should have done this originally for the regression fix in 1.2.4 #40143 (comment), but was hesitant to change lower level code.
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Ah, indeed you noticed the issue back then as well. Yeah, I think this is not lower level than the later PR #41711 (which was also backported), and IMO this should be safe for a backport. |
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@jorisvandenbossche I didn't notice #41911 (was on the wrong milestone) with a different fix. |
Merged
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merged #41911 |
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Address performance regression in https://github.com/pandas-dev/pandas/pull/41711/files#r647515492 (https://pandas.pydata.org/speed/pandas/#series_methods.All.time_all?python=3.8&Cython=0.29.21&p-N=1000000&p-case='fast'&p-dtype='bool'&commits=9231b495-44237a58)