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

Interface StreamOperatorStateContext

public interface StreamOperatorStateContext
This interface represents a context from which a stream operator can initialize everything connected to state such as e.g. backends, raw state, and timer service manager.

  • Method Details

    • isRestored

      default boolean isRestored()
      Returns true if the states provided by this context are restored from a checkpoint/savepoint.

    • getRestoredCheckpointId

      OptionalLong getRestoredCheckpointId()
      Returns non-empty if the states provided by this context are restored from a checkpoint/savepoint.

    • operatorStateBackend

      OperatorStateBackend operatorStateBackend()
      Returns the operator state backend for the stream operator.

    • keySerializer

      org.apache.flink.api.common.typeutils.TypeSerializer<?> keySerializer()
      Returns the key serializer for keyed state backends.

    • keyedStateBackend

      CheckpointableKeyedStateBackend<?> keyedStateBackend()
      Returns the keyed state backend for the stream operator. This method returns null for non-keyed operators.

    • asyncKeyedStateBackend

      AsyncKeyedStateBackend<?> asyncKeyedStateBackend()
      Returns the async keyed state backend for the stream operator. This method returns null for operators which don't support async keyed state backend.

    • internalTimerServiceManager

      InternalTimeServiceManager<?> internalTimerServiceManager()
      Returns the internal timer service manager for the stream operator. This method returns null for non-keyed operators.

    • asyncInternalTimerServiceManager

      InternalTimeServiceManager<?> asyncInternalTimerServiceManager()
      Returns the internal timer service manager create by async state backend for the stream operator. This method returns null for non-keyed operators.

    • rawOperatorStateInputs

      org.apache.flink.util.CloseableIterable<StatePartitionStreamProvider> rawOperatorStateInputs()
      Returns an iterable to obtain input streams for previously stored operator state partitions that are assigned to this stream operator.

    • rawKeyedStateInputs

      org.apache.flink.util.CloseableIterable<KeyGroupStatePartitionStreamProvider> rawKeyedStateInputs()
      Returns an iterable to obtain input streams for previously stored keyed state partitions that are assigned to this operator. This method returns null for non-keyed operators.