Package org.apache.flink.streaming.runtime.partitioner

Interface ConfigurableStreamPartitioner

All Known Implementing Classes:
KeyGroupStreamPartitioner
public interface ConfigurableStreamPartitioner
Interface for StreamPartitioner which have to be configured with the maximum parallelism of the stream transformation. The configure method is called by the StreamGraph when adding internal edges.

This interface is required since the stream partitioners are instantiated eagerly. Due to that the maximum parallelism might not have been determined and needs to be set at a stage when the maximum parallelism could have been determined.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    configure(int maxParallelism)
    Configure the StreamPartitioner with the maximum parallelism of the down stream operator.

  • Method Details

    • configure

      void configure(int maxParallelism)
      Configure the StreamPartitioner with the maximum parallelism of the down stream operator.
      Parameters:
      maxParallelism - Maximum parallelism of the down stream operator.