@Internal public static final class DistinctOperator.DistinctFunction<T> extends Object implements ReduceFunction<T>
Constructor and Description |
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DistinctFunction() |
Modifier and Type | Method and Description |
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T |
reduce(T value1,
T value2)
The core method of ReduceFunction, combining two values into one value of the same type.
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public T reduce(T value1, T value2) throws Exception
ReduceFunction
reduce
in interface ReduceFunction<T>
value1
- The first value to combine.value2
- The second value to combine.Exception
- This method may throw exceptions. Throwing an exception will cause the operation
to fail and may trigger recovery.Copyright © 2014–2017 The Apache Software Foundation. All rights reserved.