dongjoon-hyun commented on a change in pull request #26299:
[MINOR][PYSPARK][DOCS] Fix typo in example documentation
URL: https://github.com/apache/spark/pull/26299#discussion_r340899379
##########
File path: python/pyspark/sql/readwriter.py
##########
@@ -733,7 +733,7 @@ def save(self, path=None, format=None, mode=None,
partitionBy=None, **options):
:param partitionBy: names of partitioning columns
:param options: all other string options
- >>> df.write.mode('append').parquet(os.path.join(tempfile.mkdtemp(),
'data'))
+ >>> df.select("name",
"favorite_color").write.save("namesAndFavColors.parquet")
Review comment:
@mstill3 . As you see, this causes UT failure because `df` has only `[day,
month, name, year]`.
```
Failed example:
df.select("name",
"favorite_color").write.save("namesAndFavColors.parquet")
Exception raised:
Traceback (most recent call last):
File "/usr/lib64/pypy-2.5.1/lib-python/2.7/doctest.py", line 1315, in
__run
compileflags, 1) in test.globs
File "<doctest pyspark.sql.readwriter.DataFrameWriter.save[0]>", line
1, in <module>
df.select("name",
"favorite_color").write.save("namesAndFavColors.parquet")
File
"/home/jenkins/workspace/SparkPullRequestBuilder@2/python/pyspark/sql/dataframe.py",
line 1325, in select
jdf = self._jdf.select(self._jcols(*cols))
File
"/home/jenkins/workspace/SparkPullRequestBuilder@2/python/lib/py4j-0.10.8.1-src.zip/py4j/java_gateway.py",
line 1286, in __call__
answer, self.gateway_client, self.target_id, self.name)
File
"/home/jenkins/workspace/SparkPullRequestBuilder@2/python/pyspark/sql/utils.py",
line 102, in deco
raise converted
AnalysisException: cannot resolve '`favorite_color`' given input
columns: [day, month, name, year];;
```
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