[jira] [Commented] (SPARK-22393) spark-shell can't find imported types in class constructors, extends clause

["Sean Owen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-22393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16224040#comment-16224040 ] 

Sean Owen commented on SPARK-22393:
-----------------------------------

That's a weird one. {{class P(p: org.apache.spark.Partition)}} works fine as does {{ {import org.apache.spark.Partition; class P(p: Partition)} }}. I think this is some subtlety of how the scala shell interpreter works.

> spark-shell can't find imported types in class constructors, extends clause
> ---------------------------------------------------------------------------
>
>                 Key: SPARK-22393
>                 URL: https://issues.apache.org/jira/browse/SPARK-22393
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Shell
>    Affects Versions: 2.0.2, 2.1.2, 2.2.0
>            Reporter: Ryan Williams
>
> {code}
> $ spark-shell
> …
> scala> import org.apache.spark.Partition
> import org.apache.spark.Partition
> scala> class P(p: Partition)
> <console>:11: error: not found: type Partition
>        class P(p: Partition)
>                   ^
> scala> class P(val index: Int) extends Partition
> <console>:11: error: not found: type Partition
>        class P(val index: Int) extends Partition
>                                        ^
> {code}
> Any class that I {{import}} gives "not found: type ___" when used as a parameter to a class, or in an extends clause; this applies to classes I import from JARs I provide via {{--jars}} as well as core Spark classes as above.
> This worked in 1.6.3 but has been broken since 2.0.0.



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