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Posted to issues@spark.apache.org by "Takeshi Yamamuro (Jira)" <ji...@apache.org> on 2020/09/03 04:16:00 UTC
[jira] [Updated] (SPARK-32771) The example of
expressions.Aggregator in Javadoc / Scaladoc is wrong
[ https://issues.apache.org/jira/browse/SPARK-32771?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Takeshi Yamamuro updated SPARK-32771:
-------------------------------------
Fix Version/s: (was: 3.0.1)
3.0.2
> 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
> Priority: Minor
> Fix For: 2.4.7, 3.1.0, 3.0.2
>
>
> 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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