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

Interface BoundedOneInput

All Known Implementing Classes:
KeyedSortPartitionOperator, MapPartitionOperator, PartitionAggregateOperator, PartitionReduceOperator, SortPartitionOperator
@PublicEvolving public interface BoundedOneInput
Interface for one-input operators that need to be notified about the logical/semantical end of input.

NOTE: Classes should not implement both BoundedOneInput and BoundedMultiInput at the same time!

See Also:

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    endInput()
    It is notified that no more data will arrive from the input.

  • Method Details

    • endInput

      void endInput() throws Exception
      It is notified that no more data will arrive from the input.

      WARNING: It is not safe to use this method to commit any transactions or other side effects! You can use this method to flush any buffered data that can later on be committed e.g. in a CheckpointListener.notifyCheckpointComplete(long).

      NOTE: Given it is semantically very similar to the StreamOperator.finish() method. It might be dropped in favour of the other method at some point in time.

      Throws:
      Exception