GitHub user HyukjinKwon opened a pull request:
https://github.com/apache/spark/pull/20841
[SPARK-23706][PYTHON] spark.conf.get(value, default=None) should produce
None in PySpark
## What changes were proposed in this pull request?
Scala:
```
scala> spark.conf.get("hey", null)
res1: String = null
```
```
scala> spark.conf.get("spark.sql.sources.partitionOverwriteMode", null)
res2: String = null
```
Python:
**Before**
```
>>> spark.conf.get("hey", None)
...
py4j.protocol.Py4JJavaError: An error occurred while calling o30.get.
: java.util.NoSuchElementException: hey
...
```
```
>>> spark.conf.get("spark.sql.sources.partitionOverwriteMode", None)
u'STATIC'
```
**After**
```
>>> spark.conf.get("hey", None) is None
True
```
```
>>> spark.conf.get("spark.sql.sources.partitionOverwriteMode", None) is None
True
```
*Note that this PR preserves the case below:
```
>>> spark.conf.get("spark.sql.sources.partitionOverwriteMode")
u'STATIC'
```
## How was this patch tested?
Manually tested and unit tests were added.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/HyukjinKwon/spark spark-conf-get
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20841.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 #20841
----
commit 1a6cfcea2fd23a2a8b7cd0604507a8eb502962a6
Author: hyukjinkwon <gurwls223@...>
Date: 2018-03-16T04:09:58Z
spark.conf.get(value, default=None) should produce None in PySpark
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