GitHub user viirya opened a pull request:
https://github.com/apache/spark/pull/12494
[SPARK-13266][SQL] None read/writer options were not transalated to "null"
## What changes were proposed in this pull request?
In Python, the `option` and `options` method of `DataFrameReader` and
`DataFrameWriter` were sending the string "None" instead of `null` when passed
`None`, therefore making it impossible to send an actual `null`. This fixes
that problem.
This is based on #11305 from @mathieulongtin.
## How was this patch tested?
Added test to readwriter.py.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/viirya/spark-1 py-df-none-option
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12494.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 #12494
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commit 3d056c3939de832fb5e67521c8d3a1d213cbb035
Author: mathieu longtin <[email protected]>
Date: 2016-02-22T16:42:18Z
fix for https://issues.apache.org/jira/browse/SPARK-13266
commit 54350320cc4104fbb9a1512bbdc41536e53e1122
Author: Liang-Chi Hsieh <[email protected]>
Date: 2016-04-19T09:03:18Z
Python can pass None as DataFrameReader/Writer option.
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