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Apache Spark: The number of cores vs. the number of executors
..._ratio_runtime = 1/(duration_job2 / duration_job1) = 1/(55/50) = 50/55 = 0.91
It's not as perfect as the last comparison, but we still see a similar drop in performance when we lose threads.
Now for the last bit: why is it the case that we get better performance with more threads, esp. more threa...
Unable to set data attribute using jQuery Data() API
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Leniel MaccaferriLeniel Maccaferri
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Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Unable to execute dex: method ID not in [0, 0xffff]: 65536
...ast for development builds - see my answer here: stackoverflow.com/a/30799491/1233652
– Alex Lipov
Aug 15 '15 at 13:22
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What does 'const static' mean in C and C++?
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FerruccioFerruccio
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Random string generation with upper case letters and digits
...bramsIgnacio Vazquez-Abrams
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How do I tell git-svn about a remote branch created after I fetched the repo?
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janosjanos
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Are Javascript arrays sparse?
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Justin LoveJustin Love
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Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
...-1.42 -0.11 -0.18 -0.44
7 E F -0.00 1.42 -0.26 1.17
8 E F 0.91 -0.47 1.35 -0.34
9 G H 1.48 -0.63 -1.14 0.17
First let's use .size() to get the row counts:
In [3]: df.groupby(['col1', 'col2']).size()
Out[3]:
col1 col2
A B 4
C D 3
E F 2
G ...
ggplot with 2 y axes on each side and different scales
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hadleyhadley
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