Package org.apache.flink.table.runtime.operators.join.adaptive

Interface AdaptiveJoin

All Superinterfaces:
Serializable
All Known Implementing Classes:
AdaptiveJoinOperatorFactory
@Internal public interface AdaptiveJoin extends Serializable
Interface for implementing an adaptive join operator.

  • Method Summary

    Modifier and Type
    Method
    Description
    org.apache.flink.streaming.api.operators.StreamOperatorFactory<?>
    genOperatorFactory(ClassLoader classLoader, org.apache.flink.configuration.ReadableConfig config)
    Generates a StreamOperatorFactory for this join operator using the provided ClassLoader and config.
    FlinkJoinType
    getJoinType()
    Get the join type of the join operator.
    void
    markAsBroadcastJoin(boolean canBeBroadcast, boolean leftIsBuild)
    Determine whether the adaptive join operator can be optimized as broadcast hash join and decide which input side is the build side or a smaller side.
    boolean
    shouldReorderInputs()
    Check if the adaptive join node needs to adjust the read order of the input sides.

  • Method Details

    • genOperatorFactory

      org.apache.flink.streaming.api.operators.StreamOperatorFactory<?> genOperatorFactory(ClassLoader classLoader, org.apache.flink.configuration.ReadableConfig config)
      Generates a StreamOperatorFactory for this join operator using the provided ClassLoader and config.
      Parameters:
      classLoader - the ClassLoader to be used for loading classes.
      config - the configuration to be applied for creating the operator factory.
      Returns:
      a StreamOperatorFactory instance.

    • getJoinType

      FlinkJoinType getJoinType()
      Get the join type of the join operator.
      Returns:
      the join type.

    • markAsBroadcastJoin

      void markAsBroadcastJoin(boolean canBeBroadcast, boolean leftIsBuild)
      Determine whether the adaptive join operator can be optimized as broadcast hash join and decide which input side is the build side or a smaller side.
      Parameters:
      canBeBroadcast - whether the join operator can be optimized to broadcast hash join.
      leftIsBuild - whether the left input side is the build side.

    • shouldReorderInputs

      boolean shouldReorderInputs()
      Check if the adaptive join node needs to adjust the read order of the input sides. For the hash join operator, it is necessary to ensure that the build side is read first.
      Returns:
      whether the inputs should be reordered.