GitHub user jasoncl opened a pull request:
https://github.com/apache/spark/pull/8969
[SPARK-10847] [SQL] [PySpark] Pyspark - DataFrame - Optional Metadata with
`None` triggers cryptic failure
The error message is now changed from "Do not support type class
scala.Tuple2." to "Do not support type class org.json4s.JsonAST$JNull$" to be
more informative about what is not supported. Also, StructType metadata now
handles JNull correctly, i.e., {'a': None}. test_metadata_null is added to
tests.py to show the fix works.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jasoncl/spark SPARK-10847
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/8969.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 #8969
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commit 362778c2f9fd5a30959e6451017a1bdf428cb272
Author: Jason Lee <[email protected]>
Date: 2015-10-02T18:14:53Z
Added support for JNull in Metadata. Error message now displays the actual
unsupported type in the tuple instead of just tuple2
commit 6bb4fcc09c85ba1e039113d5a0172d87ea1d590a
Author: Jason Lee <[email protected]>
Date: 2015-10-02T21:51:05Z
fix scala style
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