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From Koert Kuipers <>
Subject understanding spark shuffle file re-use better
Date Wed, 13 Jan 2021 16:38:37 GMT
is shuffle file re-use based on identity or equality of the dataframe?

for example if run the exact same code twice to load data and do transforms
(joins, aggregations, etc.) but without re-using any actual dataframes,
will i still see skipped stages thanks to shuffle file re-use?


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