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Groupby very slow

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asked by avatar image oumaima.fassi on Feb 6, '19
performance·pyspark dataframe·groupby·slow response·pyspark in windows

single quote does not compile on IDE

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13 Views

commented by avatar image Jim Smith on Dec 12, '18
groupby

creating a nested json output from a flat dataframe

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0 Votes

414 Views

answered by avatar image kunalm45 on Sep 26, '18
dataframe·groupby·udaf·nested json

GroupBy does not work very well in multiple partitions

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62 Views

commented by avatar image teresayan on Dec 14, '17
groupby

what are the alternatives for a Collect_set in Datasets for better performance ?

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595 Views

edited by avatar image panos on Dec 4, '17
spark sql·performance·dataset·groupby

Dataset groupby and udaf

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0 Votes

160 Views

asked by avatar image zhuangmz on Aug 1, '16
groupby·last·first

DF avg(count): double

3 Answers

0 Votes

162 Views

answered by avatar image Kidus Mulugeta on Jul 29, '16
groupby·count·mean·aggregates

Spark 1.6.1 Dataset groupBy multiple columns, Row type not supported by encoder in mapGroups

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2.4k Views

asked by avatar image tmp123 on Jul 27, '16
sql·dataset·spark 1.6.1·groupby·encoder
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performance dataset aggregates udaf mean spark sql count spark 1.6.1 pyspark dataframe pyspark in windows encoder slow response sql first last dataframe nested json
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