diff options
author | Dongjoon Hyun <dongjoon@apache.org> | 2016-05-17 13:05:07 -0700 |
---|---|---|
committer | Davies Liu <davies.liu@gmail.com> | 2016-05-17 13:05:07 -0700 |
commit | 0f576a5748244f7e874b925f8d841f1ca238f087 (patch) | |
tree | 364947fa82507553c5e4feb82d8f24b00aeb3969 /core | |
parent | e2efe0529acd748f26dbaa41331d1733ed256237 (diff) | |
download | spark-0f576a5748244f7e874b925f8d841f1ca238f087.tar.gz spark-0f576a5748244f7e874b925f8d841f1ca238f087.tar.bz2 spark-0f576a5748244f7e874b925f8d841f1ca238f087.zip |
[SPARK-15244] [PYTHON] Type of column name created with createDataFrame is not consistent.
## What changes were proposed in this pull request?
**createDataFrame** returns inconsistent types for column names.
```python
>>> from pyspark.sql.types import StructType, StructField, StringType
>>> schema = StructType([StructField(u"col", StringType())])
>>> df1 = spark.createDataFrame([("a",)], schema)
>>> df1.columns # "col" is str
['col']
>>> df2 = spark.createDataFrame([("a",)], [u"col"])
>>> df2.columns # "col" is unicode
[u'col']
```
The reason is only **StructField** has the following code.
```
if not isinstance(name, str):
name = name.encode('utf-8')
```
This PR adds the same logic into **createDataFrame** for consistency.
```
if isinstance(schema, list):
schema = [x.encode('utf-8') if not isinstance(x, str) else x for x in schema]
```
## How was this patch tested?
Pass the Jenkins test (with new python doctest)
Author: Dongjoon Hyun <dongjoon@apache.org>
Closes #13097 from dongjoon-hyun/SPARK-15244.
Diffstat (limited to 'core')
0 files changed, 0 insertions, 0 deletions