Github user HyukjinKwon commented on the issue:
https://github.com/apache/spark/pull/15209
I think we need a JIRA because `type` and `isinstance` are not exactly
same. Also, maybe it'd better if the PR descriptions explains the bug and how
this PR tries to resolve it.
BTW, it seems you intend to support sub-classes via `isinstance`
consistently across the API, right?
If so, there are some instances similar with this. Maybe we should check
those as well.
```
$ grep -r "type(.*) [=|\!]" . | grep .python | grep -v "tests.py"
./python/pyspark/ml/linalg/__init__.py: elif type(v) == np.ndarray:
./python/pyspark/ml/linalg/__init__.py: if type(other) == np.ndarray:
./python/pyspark/ml/linalg/__init__.py: if type(pairs) == dict:
./python/pyspark/ml/param/__init__.py: if type(value) == list:
./python/pyspark/ml/param/__init__.py: elif type(value) ==
np.unicode_:
./python/pyspark/ml/param/__init__.py: if type(value) == bool:
./python/pyspark/mllib/linalg/__init__.py: elif type(v) == np.ndarray:
./python/pyspark/mllib/linalg/__init__.py: if type(other) ==
np.ndarray:
./python/pyspark/mllib/linalg/__init__.py: if type(pairs) ==
dict:
./python/pyspark/mllib/stat/_statistics.py: if type(y) == str:
./python/pyspark/sql/column.py: if type(startPos) != type(length):
./python/pyspark/sql/readwriter.py: if type(path) != list:
./python/pyspark/sql/readwriter.py: if type(path) == list:
./python/pyspark/sql/streaming.py: if type(interval) != str or
len(interval.strip()) == 0:
./python/pyspark/sql/streaming.py: if type(path) != str or
len(path.strip()) == 0:
./python/pyspark/sql/streaming.py: if not outputMode or
type(outputMode) != str or len(outputMode.strip()) == 0:
./python/pyspark/sql/streaming.py: if not queryName or
type(queryName) != str or len(queryName.strip()) == 0:
./python/pyspark/sql/streaming.py: if type(processingTime) !=
str or len(processingTime.strip()) == 0:
./python/pyspark/sql/types.py: return type(self) == type(other)
```
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