GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/13900
[SPARK-16173][SQL] Can't join describe() of DataFrame in Scala 2.10
## What changes were proposed in this pull request?
This PR fixes `DataFrame.describe()` by forcing materialization to make the
`Seq` serializable. Currently, `describe()` of DataFrame throws `Task not
serializable` Spark exceptions when joining in Scala 2.10.
## How was this patch tested?
Manual. (After building with Scala 2.10, test on `bin/spark-shell` and
`bin/pyspark`.)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark SPARK-16173
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13900.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #13900
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