Exchange Unary Physical Operators¶
Exchange
is an extension of the UnaryExecNode abstraction for unary physical operators to exchange data (among tasks).
Adaptive Query Execution
Exchange
operators are target of Adaptive Query Execution.
Implementations¶
Output Attributes¶
output: Seq[Attribute]
output
requests the child operator for the output attributes.
output
is part of the QueryPlan abstraction.
Arguments¶
stringArgs: Iterator[Any]
stringArgs
adds [id=#[id]] to the default stringArgs.
stringArgs
is part of the TreeNode abstraction.
Last update: 2020-09-02