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itholic 31557d4759 [SPARK-36387][PYTHON] Fix Series.astype from datetime to nullable string 
This PR proposes to fix `Series.astype` when converting datetime type to StringDtype, to match the behavior of pandas 1.3.

In pandas < 1.3,
```python
>>> pd.Series(["2020-10-27 00:00:01", None], name="datetime").astype("string")
0    2020-10-27 00:00:01
1                    NaT
Name: datetime, dtype: string
```

This is changed to

```python
>>> pd.Series(["2020-10-27 00:00:01", None], name="datetime").astype("string")
0    2020-10-27 00:00:01
1                   <NA>
Name: datetime, dtype: string
```

in pandas >= 1.3, so we follow the behavior of latest pandas.

Because pandas-on-Spark always follow the behavior of latest pandas.

Yes, the behavior is changed to latest pandas when converting datetime to nullable string (StringDtype)

Unittest passed

Closes #33735 from itholic/SPARK-36387.

Authored-by: itholic <haejoon.lee@databricks.com>
Signed-off-by: Takuya UESHIN <ueshin@databricks.com>
(cherry picked from commit c0441bb7e8)
Signed-off-by: Hyukjin Kwon <gurwls223@apache.org>
2021-08-27 10:00:01 +09:00
..
cloudpickle [SPARK-33983][PYTHON] Update cloudpickle to v1.6.0 2021-01-04 10:36:31 -08:00
ml [MINOR][3.2] Remove unused numpy import 2021-08-26 09:52:54 +09:00
mllib [SPARK-36092][INFRA][BUILD][PYTHON] Migrate to GitHub Actions with Codecov from Jenkins 2021-08-01 21:38:39 +09:00
pandas [SPARK-36387][PYTHON] Fix Series.astype from datetime to nullable string 2021-08-27 10:00:01 +09:00
resource [SPARK-32320][PYSPARK] Remove mutable default arguments 2020-12-08 09:35:36 +08:00
sql [SPARK-36465][SS] Dynamic gap duration in session window 2021-08-16 11:06:16 +09:00
streaming [SPARK-36092][INFRA][BUILD][PYTHON] Migrate to GitHub Actions with Codecov from Jenkins 2021-08-01 21:38:39 +09:00
testing [SPARK-35599][PYTHON] Adjust check_exact parameter for older pd.testing 2021-06-07 11:12:49 +09:00
tests [SPARK-36092][INFRA][BUILD][PYTHON] Migrate to GitHub Actions with Codecov from Jenkins 2021-08-01 21:38:39 +09:00
__init__.py [SPARK-35303][PYTHON] Enable pinned thread mode by default 2021-06-18 12:02:29 +09:00
__init__.pyi [SPARK-35303][PYTHON] Enable pinned thread mode by default 2021-06-18 12:02:29 +09:00
_globals.py [SPARK-23328][PYTHON] Disallow default value None in na.replace/replace when 'to_replace' is not a dictionary 2018-02-09 14:21:10 +08:00
_typing.pyi [SPARK-32714][PYTHON] Initial pyspark-stubs port 2020-09-24 14:15:36 +09:00
accumulators.py [SPARK-32194][PYTHON] Use proper exception classes instead of plain Exception 2021-05-26 11:54:40 +09:00
accumulators.pyi [SPARK-33002][PYTHON] Remove non-API annotations 2020-10-07 19:53:59 +09:00
broadcast.py [SPARK-32194][PYTHON] Use proper exception classes instead of plain Exception 2021-05-26 11:54:40 +09:00
broadcast.pyi [SPARK-33457][PYTHON] Adjust mypy configuration 2020-11-25 09:27:04 +09:00
conf.py [SPARK-32194][PYTHON] Use proper exception classes instead of plain Exception 2021-05-26 11:54:40 +09:00
conf.pyi [SPARK-32714][PYTHON] Initial pyspark-stubs port 2020-09-24 14:15:36 +09:00
context.py [SPARK-35938][PYTHON] Add deprecation warning for Python 3.6 2021-07-01 09:32:25 +09:00
context.pyi [SPARK-33457][PYTHON] Adjust mypy configuration 2020-11-25 09:27:04 +09:00
daemon.py [SPARK-26175][PYTHON] Redirect the standard input of the forked child to devnull in daemon 2019-07-31 09:10:24 +09:00
files.py [SPARK-28206][PYTHON] Remove the legacy Epydoc in PySpark API documentation 2019-07-05 10:08:22 -07:00
files.pyi [SPARK-32714][PYTHON] Initial pyspark-stubs port 2020-09-24 14:15:36 +09:00
find_spark_home.py [SPARK-32017][PYTHON][FOLLOW-UP] Rename HADOOP_VERSION to PYSPARK_HADOOP_VERSION in pip installation option 2021-01-05 17:21:32 +09:00
install.py [SPARK-33254][PYTHON][DOCS] Migration to NumPy documentation style in Core (pyspark.*, pyspark.resource.*, etc.) 2020-11-16 10:21:50 +09:00
java_gateway.py [SPARK-35303][PYTHON] Enable pinned thread mode by default 2021-06-18 12:02:29 +09:00
join.py [SPARK-14202] [PYTHON] Use generator expression instead of list comp in python_full_outer_jo… 2016-03-28 14:51:36 -07:00
profiler.py [SPARK-33254][PYTHON][DOCS] Migration to NumPy documentation style in Core (pyspark.*, pyspark.resource.*, etc.) 2020-11-16 10:21:50 +09:00
profiler.pyi [SPARK-32714][PYTHON] Initial pyspark-stubs port 2020-09-24 14:15:36 +09:00
py.typed [SPARK-32714][PYTHON] Initial pyspark-stubs port 2020-09-24 14:15:36 +09:00
rdd.py [SPARK-35512][PYTHON] Fix OverflowError(cannot convert float infinity to integer) in partitionBy function 2021-06-09 10:57:27 +09:00
rdd.pyi [SPARK-35986][PYSPARK] Fix type hint for RDD.histogram's buckets 2021-07-04 10:24:55 +09:00
rddsampler.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
resultiterable.py [SPARK-32138] Drop Python 2.7, 3.4 and 3.5 2020-07-14 11:22:44 +09:00
resultiterable.pyi [SPARK-32714][PYTHON] Initial pyspark-stubs port 2020-09-24 14:15:36 +09:00
serializers.py [SPARK-35303][PYTHON] Enable pinned thread mode by default 2021-06-18 12:02:29 +09:00
shell.py [SPARK-33363] Add prompt information related to the current task when pyspark/sparkR starts 2020-11-10 11:12:19 +09:00
shuffle.py [SPARK-35303][PYTHON] Enable pinned thread mode by default 2021-06-18 12:02:29 +09:00
statcounter.py [SPARK-32194][PYTHON] Use proper exception classes instead of plain Exception 2021-05-26 11:54:40 +09:00
statcounter.pyi [SPARK-32714][PYTHON] Initial pyspark-stubs port 2020-09-24 14:15:36 +09:00
status.py
status.pyi [SPARK-32714][PYTHON] Initial pyspark-stubs port 2020-09-24 14:15:36 +09:00
storagelevel.py [SPARK-31448][PYTHON] Fix storage level used in persist() in dataframe.py 2020-09-15 08:41:22 -05:00
storagelevel.pyi [SPARK-32714][PYTHON] Initial pyspark-stubs port 2020-09-24 14:15:36 +09:00
taskcontext.py [SPARK-32194][PYTHON] Use proper exception classes instead of plain Exception 2021-05-26 11:54:40 +09:00
taskcontext.pyi [SPARK-32714][PYTHON] Initial pyspark-stubs port 2020-09-24 14:15:36 +09:00
traceback_utils.py
util.py [SPARK-35946][PYTHON] Respect Py4J server in InheritableThread API 2021-06-29 22:18:54 -07:00
util.pyi [SPARK-35303][PYTHON] Enable pinned thread mode by default 2021-06-18 12:02:29 +09:00
version.py Preparing development version 3.2.1-SNAPSHOT 2021-08-20 12:40:47 +00:00
version.pyi [SPARK-32714][PYTHON] Initial pyspark-stubs port 2020-09-24 14:15:36 +09:00
worker.py [SPARK-36062][PYTHON] Try to capture faulthanlder when a Python worker crashes 2021-07-09 11:31:00 +09:00