Java Code Examples for org.apache.flink.runtime.operators.util.LocalStrategy#SORT

The following examples show how to use org.apache.flink.runtime.operators.util.LocalStrategy#SORT . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: GroupReduceWithCombineProperties.java From Flink-CEPplus with Apache License 2.0

4 votes

@Override
public SingleInputPlanNode instantiate(Channel in, SingleInputNode node) {
	if (in.getShipStrategy() == ShipStrategyType.FORWARD) {
		if(in.getSource().getOptimizerNode() instanceof PartitionNode) {
			LOG.warn("Cannot automatically inject combiner for GroupReduceFunction. Please add an explicit combiner with combineGroup() in front of the partition operator.");
		}
		// adjust a sort (changes grouping, so it must be for this driver to combining sort
		if (in.getLocalStrategy() == LocalStrategy.SORT) {
			if (!in.getLocalStrategyKeys().isValidUnorderedPrefix(this.keys)) {
				throw new RuntimeException("Bug: Inconsistent sort for group strategy.");
			}
			in.setLocalStrategy(LocalStrategy.COMBININGSORT, in.getLocalStrategyKeys(),
								in.getLocalStrategySortOrder());
		}
		return new SingleInputPlanNode(node, "Reduce ("+node.getOperator().getName()+")", in,
										DriverStrategy.SORTED_GROUP_REDUCE, this.keyList);
	} else {
		// non forward case. all local properties are killed anyways, so we can safely plug in a combiner
		Channel toCombiner = new Channel(in.getSource());
		toCombiner.setShipStrategy(ShipStrategyType.FORWARD, DataExchangeMode.PIPELINED);

		// create an input node for combine with same parallelism as input node
		GroupReduceNode combinerNode = ((GroupReduceNode) node).getCombinerUtilityNode();
		combinerNode.setParallelism(in.getSource().getParallelism());

		SingleInputPlanNode combiner = new SingleInputPlanNode(combinerNode, "Combine ("+node.getOperator()
				.getName()+")", toCombiner, DriverStrategy.SORTED_GROUP_COMBINE);
		combiner.setCosts(new Costs(0, 0));
		combiner.initProperties(toCombiner.getGlobalProperties(), toCombiner.getLocalProperties());
		// set sorting comparator key info
		combiner.setDriverKeyInfo(in.getLocalStrategyKeys(), in.getLocalStrategySortOrder(), 0);
		// set grouping comparator key info
		combiner.setDriverKeyInfo(this.keyList, 1);
		
		Channel toReducer = new Channel(combiner);
		toReducer.setShipStrategy(in.getShipStrategy(), in.getShipStrategyKeys(),
								in.getShipStrategySortOrder(), in.getDataExchangeMode());
		if (in.getShipStrategy() == ShipStrategyType.PARTITION_RANGE) {
			toReducer.setDataDistribution(in.getDataDistribution());
		}
		toReducer.setLocalStrategy(LocalStrategy.COMBININGSORT, in.getLocalStrategyKeys(),
									in.getLocalStrategySortOrder());

		return new SingleInputPlanNode(node, "Reduce ("+node.getOperator().getName()+")",
										toReducer, DriverStrategy.SORTED_GROUP_REDUCE, this.keyList);
	}
}

Example 2

Source File: GroupReduceWithCombineProperties.java From flink with Apache License 2.0

4 votes

@Override
public SingleInputPlanNode instantiate(Channel in, SingleInputNode node) {
	if (in.getShipStrategy() == ShipStrategyType.FORWARD) {
		if(in.getSource().getOptimizerNode() instanceof PartitionNode) {
			LOG.warn("Cannot automatically inject combiner for GroupReduceFunction. Please add an explicit combiner with combineGroup() in front of the partition operator.");
		}
		// adjust a sort (changes grouping, so it must be for this driver to combining sort
		if (in.getLocalStrategy() == LocalStrategy.SORT) {
			if (!in.getLocalStrategyKeys().isValidUnorderedPrefix(this.keys)) {
				throw new RuntimeException("Bug: Inconsistent sort for group strategy.");
			}
			in.setLocalStrategy(LocalStrategy.COMBININGSORT, in.getLocalStrategyKeys(),
								in.getLocalStrategySortOrder());
		}
		return new SingleInputPlanNode(node, "Reduce ("+node.getOperator().getName()+")", in,
										DriverStrategy.SORTED_GROUP_REDUCE, this.keyList);
	} else {
		// non forward case. all local properties are killed anyways, so we can safely plug in a combiner
		Channel toCombiner = new Channel(in.getSource());
		toCombiner.setShipStrategy(ShipStrategyType.FORWARD, DataExchangeMode.PIPELINED);

		// create an input node for combine with same parallelism as input node
		GroupReduceNode combinerNode = ((GroupReduceNode) node).getCombinerUtilityNode();
		combinerNode.setParallelism(in.getSource().getParallelism());

		SingleInputPlanNode combiner = new SingleInputPlanNode(combinerNode, "Combine ("+node.getOperator()
				.getName()+")", toCombiner, DriverStrategy.SORTED_GROUP_COMBINE);
		combiner.setCosts(new Costs(0, 0));
		combiner.initProperties(toCombiner.getGlobalProperties(), toCombiner.getLocalProperties());
		// set sorting comparator key info
		combiner.setDriverKeyInfo(in.getLocalStrategyKeys(), in.getLocalStrategySortOrder(), 0);
		// set grouping comparator key info
		combiner.setDriverKeyInfo(this.keyList, 1);
		
		Channel toReducer = new Channel(combiner);
		toReducer.setShipStrategy(in.getShipStrategy(), in.getShipStrategyKeys(),
								in.getShipStrategySortOrder(), in.getDataExchangeMode());
		if (in.getShipStrategy() == ShipStrategyType.PARTITION_RANGE) {
			toReducer.setDataDistribution(in.getDataDistribution());
		}
		toReducer.setLocalStrategy(LocalStrategy.COMBININGSORT, in.getLocalStrategyKeys(),
									in.getLocalStrategySortOrder());

		return new SingleInputPlanNode(node, "Reduce ("+node.getOperator().getName()+")",
										toReducer, DriverStrategy.SORTED_GROUP_REDUCE, this.keyList);
	}
}

Example 3

Source File: GroupReduceWithCombineProperties.java From flink with Apache License 2.0

4 votes

@Override
public SingleInputPlanNode instantiate(Channel in, SingleInputNode node) {
	if (in.getShipStrategy() == ShipStrategyType.FORWARD) {
		if(in.getSource().getOptimizerNode() instanceof PartitionNode) {
			LOG.warn("Cannot automatically inject combiner for GroupReduceFunction. Please add an explicit combiner with combineGroup() in front of the partition operator.");
		}
		// adjust a sort (changes grouping, so it must be for this driver to combining sort
		if (in.getLocalStrategy() == LocalStrategy.SORT) {
			if (!in.getLocalStrategyKeys().isValidUnorderedPrefix(this.keys)) {
				throw new RuntimeException("Bug: Inconsistent sort for group strategy.");
			}
			in.setLocalStrategy(LocalStrategy.COMBININGSORT, in.getLocalStrategyKeys(),
								in.getLocalStrategySortOrder());
		}
		return new SingleInputPlanNode(node, "Reduce ("+node.getOperator().getName()+")", in,
										DriverStrategy.SORTED_GROUP_REDUCE, this.keyList);
	} else {
		// non forward case. all local properties are killed anyways, so we can safely plug in a combiner
		Channel toCombiner = new Channel(in.getSource());
		toCombiner.setShipStrategy(ShipStrategyType.FORWARD, DataExchangeMode.PIPELINED);

		// create an input node for combine with same parallelism as input node
		GroupReduceNode combinerNode = ((GroupReduceNode) node).getCombinerUtilityNode();
		combinerNode.setParallelism(in.getSource().getParallelism());

		SingleInputPlanNode combiner = new SingleInputPlanNode(combinerNode, "Combine ("+node.getOperator()
				.getName()+")", toCombiner, DriverStrategy.SORTED_GROUP_COMBINE);
		combiner.setCosts(new Costs(0, 0));
		combiner.initProperties(toCombiner.getGlobalProperties(), toCombiner.getLocalProperties());
		// set sorting comparator key info
		combiner.setDriverKeyInfo(in.getLocalStrategyKeys(), in.getLocalStrategySortOrder(), 0);
		// set grouping comparator key info
		combiner.setDriverKeyInfo(this.keyList, 1);
		
		Channel toReducer = new Channel(combiner);
		toReducer.setShipStrategy(in.getShipStrategy(), in.getShipStrategyKeys(),
								in.getShipStrategySortOrder(), in.getDataExchangeMode());
		if (in.getShipStrategy() == ShipStrategyType.PARTITION_RANGE) {
			toReducer.setDataDistribution(in.getDataDistribution());
		}
		toReducer.setLocalStrategy(LocalStrategy.COMBININGSORT, in.getLocalStrategyKeys(),
									in.getLocalStrategySortOrder());

		return new SingleInputPlanNode(node, "Reduce ("+node.getOperator().getName()+")",
										toReducer, DriverStrategy.SORTED_GROUP_REDUCE, this.keyList);
	}
}