ExecutedCommandExec-spark技术分享

ExecutedCommandExec Leaf Physical Operator for Command Execution

ExecutedCommandExec runs a command and caches the result in sideEffectResult internal attribute.

Table 1. ExecutedCommandExec’s Methods
Method	Description
`doExecute`	Executes `ExecutedCommandExec` physical operator (and produces a result as an RDD of internal binary rows
`executeCollect`
`executeTake`
`executeToIterator`



sideEffectResult: Seq[InternalRow]

sideEffectResult: Seq[InternalRow]

sideEffectResult requests RunnableCommand to run (that produces a Seq[Row]) and converts the result to Catalyst types using a Catalyst converter function for the schema.

Note	`sideEffectResult` is used when `ExecutedCommandExec` is requested for executeCollect, executeToIterator, executeTake, doExecute.