org.apache.flink.optimizer.operators.GroupReduceProperties Java Examples

The following examples show how to use org.apache.flink.optimizer.operators.GroupReduceProperties. 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: GroupReduceNode.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
private List<OperatorDescriptorSingle> initPossibleProperties(Partitioner<?> customPartitioner) {
	// see if an internal hint dictates the strategy to use
	final Configuration conf = getOperator().getParameters();
	final String localStrategy = conf.getString(Optimizer.HINT_LOCAL_STRATEGY, null);

	final boolean useCombiner;
	if (localStrategy != null) {
		if (Optimizer.HINT_LOCAL_STRATEGY_SORT.equals(localStrategy)) {
			useCombiner = false;
		}
		else if (Optimizer.HINT_LOCAL_STRATEGY_COMBINING_SORT.equals(localStrategy)) {
			if (!isCombineable()) {
				Optimizer.LOG.warn("Strategy hint for GroupReduce '" + getOperator().getName() +
					"' requires combinable reduce, but user function is not marked combinable.");
			}
			useCombiner = true;
		} else {
			throw new CompilerException("Invalid local strategy hint for match contract: " + localStrategy);
		}
	} else {
		useCombiner = isCombineable();
	}
	
	// check if we can work with a grouping (simple reducer), or if we need ordering because of a group order
	Ordering groupOrder = null;
	if (getOperator() != null) {
		groupOrder = getOperator().getGroupOrder();
		if (groupOrder != null && groupOrder.getNumberOfFields() == 0) {
			groupOrder = null;
		}
	}
	
	OperatorDescriptorSingle props = useCombiner ?
		(this.keys == null ? new AllGroupWithPartialPreGroupProperties() : new GroupReduceWithCombineProperties(this.keys, groupOrder, customPartitioner)) :
		(this.keys == null ? new AllGroupReduceProperties() : new GroupReduceProperties(this.keys, groupOrder, customPartitioner));

	return Collections.singletonList(props);
}
Example #2
Source File: GroupReduceNode.java    From flink with Apache License 2.0 5 votes vote down vote up 
private List<OperatorDescriptorSingle> initPossibleProperties(Partitioner<?> customPartitioner) {
	// see if an internal hint dictates the strategy to use
	final Configuration conf = getOperator().getParameters();
	final String localStrategy = conf.getString(Optimizer.HINT_LOCAL_STRATEGY, null);

	final boolean useCombiner;
	if (localStrategy != null) {
		if (Optimizer.HINT_LOCAL_STRATEGY_SORT.equals(localStrategy)) {
			useCombiner = false;
		}
		else if (Optimizer.HINT_LOCAL_STRATEGY_COMBINING_SORT.equals(localStrategy)) {
			if (!isCombineable()) {
				Optimizer.LOG.warn("Strategy hint for GroupReduce '" + getOperator().getName() +
					"' requires combinable reduce, but user function is not marked combinable.");
			}
			useCombiner = true;
		} else {
			throw new CompilerException("Invalid local strategy hint for match contract: " + localStrategy);
		}
	} else {
		useCombiner = isCombineable();
	}
	
	// check if we can work with a grouping (simple reducer), or if we need ordering because of a group order
	Ordering groupOrder = null;
	if (getOperator() != null) {
		groupOrder = getOperator().getGroupOrder();
		if (groupOrder != null && groupOrder.getNumberOfFields() == 0) {
			groupOrder = null;
		}
	}
	
	OperatorDescriptorSingle props = useCombiner ?
		(this.keys == null ? new AllGroupWithPartialPreGroupProperties() : new GroupReduceWithCombineProperties(this.keys, groupOrder, customPartitioner)) :
		(this.keys == null ? new AllGroupReduceProperties() : new GroupReduceProperties(this.keys, groupOrder, customPartitioner));

	return Collections.singletonList(props);
}
Example #3
Source File: GroupReduceNode.java    From flink with Apache License 2.0 5 votes vote down vote up 
private List<OperatorDescriptorSingle> initPossibleProperties(Partitioner<?> customPartitioner) {
	// see if an internal hint dictates the strategy to use
	final Configuration conf = getOperator().getParameters();
	final String localStrategy = conf.getString(Optimizer.HINT_LOCAL_STRATEGY, null);

	final boolean useCombiner;
	if (localStrategy != null) {
		if (Optimizer.HINT_LOCAL_STRATEGY_SORT.equals(localStrategy)) {
			useCombiner = false;
		}
		else if (Optimizer.HINT_LOCAL_STRATEGY_COMBINING_SORT.equals(localStrategy)) {
			if (!isCombineable()) {
				Optimizer.LOG.warn("Strategy hint for GroupReduce '" + getOperator().getName() +
					"' requires combinable reduce, but user function is not marked combinable.");
			}
			useCombiner = true;
		} else {
			throw new CompilerException("Invalid local strategy hint for match contract: " + localStrategy);
		}
	} else {
		useCombiner = isCombineable();
	}
	
	// check if we can work with a grouping (simple reducer), or if we need ordering because of a group order
	Ordering groupOrder = null;
	if (getOperator() != null) {
		groupOrder = getOperator().getGroupOrder();
		if (groupOrder != null && groupOrder.getNumberOfFields() == 0) {
			groupOrder = null;
		}
	}
	
	OperatorDescriptorSingle props = useCombiner ?
		(this.keys == null ? new AllGroupWithPartialPreGroupProperties() : new GroupReduceWithCombineProperties(this.keys, groupOrder, customPartitioner)) :
		(this.keys == null ? new AllGroupReduceProperties() : new GroupReduceProperties(this.keys, groupOrder, customPartitioner));

	return Collections.singletonList(props);
}