Package org.apache.flink.streaming.api.operators

Class OperatorAttributes

java.lang.Object

org.apache.flink.streaming.api.operators.OperatorAttributes

All Implemented Interfaces:

Serializable

@Experimental
public class OperatorAttributes
extends Object
implements Serializable

OperatorAttributes element provides Job Manager with information that can be used to optimize job performance.

See Also:

• Serialized Form

Method Summary

Modifier and Type	Method	Description
boolean	isInternalSorterSupported()	Returns true iff the operator uses an internal sorter to sort inputs by key.
boolean	isOutputOnlyAfterEndOfStream()	Returns true if and only if the operator only emits records after all its inputs have ended.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

isOutputOnlyAfterEndOfStream

public boolean isOutputOnlyAfterEndOfStream()

Returns true if and only if the operator only emits records after all its inputs have ended.

Here are the implications when it is true:

• The results of this operator as well as its chained operators have blocking partition type.
• This operator as well as its chained operators will be executed in batch mode.

isInternalSorterSupported

public boolean isInternalSorterSupported()

Returns true iff the operator uses an internal sorter to sort inputs by key. When it is true, the input records will not to be sorted externally before being fed into this operator.