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CoalesceExec Unary Physical Operator

CoalesceExec is a unary physical operator that represents Repartition logical operator (with shuffle disabled) at execution.

Creating Instance

CoalesceExec takes the following to be created:

CoalesceExec is created when:

Executing Operator

doExecute(): RDD[InternalRow]

doExecute is part of the SparkPlan abstraction.


Output Data Partitioning Requirements

outputPartitioning: Partitioning

outputPartitioning is part of the SparkPlan abstraction.

outputPartitioning is one of the following: