Kousuke Saruta created SPARK-32771:
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Summary: The example of expressions.Aggregator in Javadoc /
Scaladoc is wrong
Key: SPARK-32771
URL: https://issues.apache.org/jira/browse/SPARK-32771
Project: Spark
Issue Type: Bug
Components: docs
Affects Versions: 3.0.0, 3.1.0
Reporter: Kousuke Saruta
Assignee: Kousuke Saruta
There is an example of expressions.Aggregator in Javadoc and Scaladoc like as
follows.
{code:java}
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(){code}
But this example doesn't work because it doesn't define bufferEncoder and
outputEncoder.
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