Exchange Unary Physical Operators¶

Exchange is an extension of the UnaryExecNode abstraction for unary physical operators to exchange data (among tasks).

Implementations¶

• BroadcastExchangeLike
• ShuffleExchangeLike

Output Attributes¶

output: Seq[Attribute]

output is part of the QueryPlan abstraction.

output requests the child operator for the output attributes.

Arguments¶

stringArgs: Iterator[Any]

stringArgs is part of the TreeNode abstraction.

stringArgs adds [id=#[id]] to the default stringArgs.