GitHub user marmbrus opened a pull request:
https://github.com/apache/spark/pull/17201
[SPARK-18055][SQL] Use correct mirror in ExpresionEncoder
Previously, we were using the mirror of passed in `TypeTag` when reflecting
to build an encoder. This fails when the outer class is built in (i.e. `Seq`'s
default mirror is based on root classloader) but inner classes (i.e. `A` in
`Seq[A]`) are defined in the REPL or a library.
This patch changes us to always reflect based on a mirror created using the
context classloader.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/marmbrus/spark replSeqEncoder
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17201.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 #17201
commit 3af20fd72671d66f4f46786ce65f037565cc7b99
Author: Michael Armbrust
Date: 2017-03-08T01:53:43Z
[SPARK-18055][SQL] Use correct mirror in ExpresionEncoder
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