/** * Closes the iteration. This method defines the end of the iterative * program part that will be fed back to the start of the iteration. * * <p>A common usage pattern for streaming iterations is to use output * splitting to send a part of the closing data stream to the head. Refer to * {@link DataStream#split(org.apache.flink.streaming.api.collector.selector.OutputSelector)} * for more information. * * @param feedbackStream * {@link DataStream} that will be used as input to the iteration * head. * * @return The feedback stream. * */ @SuppressWarnings({ "unchecked", "rawtypes" }) public DataStream<T> closeWith(DataStream<T> feedbackStream) { Collection<StreamTransformation<?>> predecessors = feedbackStream.getTransformation().getTransitivePredecessors(); if (!predecessors.contains(this.transformation)) { throw new UnsupportedOperationException( "Cannot close an iteration with a feedback DataStream that does not originate from said iteration."); } ((FeedbackTransformation) getTransformation()).addFeedbackEdge(feedbackStream.getTransformation()); return feedbackStream; }
/** * Closes the iteration. This method defines the end of the iterative * program part that will be fed back to the start of the iteration. * * <p>A common usage pattern for streaming iterations is to use output * splitting to send a part of the closing data stream to the head. Refer to * {@link DataStream#split(org.apache.flink.streaming.api.collector.selector.OutputSelector)} * for more information. * * @param feedbackStream * {@link DataStream} that will be used as input to the iteration * head. * * @return The feedback stream. * */ @SuppressWarnings({ "unchecked", "rawtypes" }) public DataStream<T> closeWith(DataStream<T> feedbackStream) { Collection<StreamTransformation<?>> predecessors = feedbackStream.getTransformation().getTransitivePredecessors(); if (!predecessors.contains(this.transformation)) { throw new UnsupportedOperationException( "Cannot close an iteration with a feedback DataStream that does not originate from said iteration."); } ((FeedbackTransformation) getTransformation()).addFeedbackEdge(feedbackStream.getTransformation()); return feedbackStream; }
/** * Closes the iteration. This method defines the end of the iterative * program part that will be fed back to the start of the iteration. * * <p>A common usage pattern for streaming iterations is to use output * splitting to send a part of the closing data stream to the head. Refer to * {@link DataStream#split(org.apache.flink.streaming.api.collector.selector.OutputSelector)} * for more information. * * @param feedbackStream * {@link DataStream} that will be used as input to the iteration * head. * * @return The feedback stream. * */ @SuppressWarnings({ "unchecked", "rawtypes" }) public DataStream<T> closeWith(DataStream<T> feedbackStream) { Collection<StreamTransformation<?>> predecessors = feedbackStream.getTransformation().getTransitivePredecessors(); if (!predecessors.contains(this.transformation)) { throw new UnsupportedOperationException( "Cannot close an iteration with a feedback DataStream that does not originate from said iteration."); } ((FeedbackTransformation) getTransformation()).addFeedbackEdge(feedbackStream.getTransformation()); return feedbackStream; }
/** * Closes the iteration. This method defines the end of the iterative * program part that will be fed back to the start of the iteration. * * <p>A common usage pattern for streaming iterations is to use output * splitting to send a part of the closing data stream to the head. Refer to * {@link DataStream#split(org.apache.flink.streaming.api.collector.selector.OutputSelector)} * for more information. * * @param feedbackStream * {@link DataStream} that will be used as input to the iteration * head. * * @return The feedback stream. * */ @SuppressWarnings({ "unchecked", "rawtypes" }) public DataStream<T> closeWith(DataStream<T> feedbackStream) { Collection<StreamTransformation<?>> predecessors = feedbackStream.getTransformation().getTransitivePredecessors(); if (!predecessors.contains(this.transformation)) { throw new UnsupportedOperationException( "Cannot close an iteration with a feedback DataStream that does not originate from said iteration."); } ((FeedbackTransformation) getTransformation()).addFeedbackEdge(feedbackStream.getTransformation()); return feedbackStream; }