What is coalesce () in Spark?

Question 1

Question 2

It is used to decrease the number of partitions in an RDD. It avoids full shuffle of RDD.

SakshiSharma · Answer 1 · 2020-03-08T13:13:02+0000

It is used to decrease the number of partitions in an RDD. It avoids full shuffle of RDD.

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