Details
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Bug
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Status: Resolved
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Minor
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Resolution: Fixed
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3.0.0, 3.1.0
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None
Description
There is an example of expressions.Aggregator in Javadoc and Scaladoc like as follows.
val customSummer = new Aggregator[Data, Int, Int] {
def zero: Int = 0
def reduce(b: Int, a: Data): Int = b + a.i
def merge(b1: Int, b2: Int): Int = b1 + b2
def finish(r: Int): Int = r
}.toColumn()
But this example doesn't work because it doesn't define bufferEncoder and outputEncoder.
