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https://issues.apache.org/jira/browse/SPARK-3266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14114870#comment-14114870
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Josh Rosen commented on SPARK-3266:
-----------------------------------
[~pwendell] I think the JavaRDDLike trait compiles down to a Java interface
(named JavaRDDLike) and an abstract class named JavaRDDLike$class that contains
the implementations of the trait's members. After this change, I think
JavaRDDLike would compile into a Java abstract base class with the same name
and we wouldn't have a separate interface.
My concern here is that it's going to be a _huge_ pain to find and fix all of
the possible issues that could be caused by this being a trait instead of an
abstract base class. Having it be a trait was a mistake that we should have
caught and fixed earlier.
> JavaDoubleRDD doesn't contain max()
> -----------------------------------
>
> Key: SPARK-3266
> URL: https://issues.apache.org/jira/browse/SPARK-3266
> Project: Spark
> Issue Type: Bug
> Components: Java API
> Affects Versions: 1.0.1, 1.0.2, 1.1.0
> Reporter: Amey Chaugule
> Assignee: Josh Rosen
> Attachments: spark-repro-3266.tar.gz
>
>
> While I can compile my code, I see:
> Caused by: java.lang.NoSuchMethodError:
> org.apache.spark.api.java.JavaDoubleRDD.max(Ljava/util/Comparator;)Ljava/lang/Double;
> When I try to execute my Spark code. Stepping into the JavaDoubleRDD class, I
> don't notice max()
> although it is clearly listed in the documentation.
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