HyukjinKwon opened a new pull request, #40153:
URL: https://github.com/apache/spark/pull/40153
### What changes were proposed in this pull request?
This PR proposes to avoid new Python typing syntax that causes the test
failure in lower Python version.
### Why are the changes needed?
Python 3.7 support is broken:
```
+ ./python/run-tests --python-executables=python3
Running PySpark tests. Output is in
/home/ec2-user/spark/python/unit-tests.log
Will test against the following Python executables: ['python3']
Will test the following Python modules: ['pyspark-connect', 'pyspark-core',
'pyspark-errors', 'pyspark-ml', 'pyspark-mllib', 'pyspark-pandas',
'pyspark-pandas-slow', 'pyspark-resource', 'pyspark-sql', 'pyspark-streaming']
python3 python_implementation is CPython
python3 version is: Python 3.7.16
Starting test(python3): pyspark.ml.tests.test_feature (temp output:
/home/ec2-user/spark/python/target/8ca9ab1a-05cc-4845-bf89-30d9001510bc/python3__pyspark.ml.tests.test_feature__kg6sseie.log)
Starting test(python3): pyspark.ml.tests.test_base (temp output:
/home/ec2-user/spark/python/target/f2264f3b-6b26-4e61-9452-8d6ddd7eb002/python3__pyspark.ml.tests.test_base__0902zf9_.log)
Starting test(python3): pyspark.ml.tests.test_algorithms (temp output:
/home/ec2-user/spark/python/target/d1dc4e07-e58c-4c03-abe5-09d8fab22e6a/python3__pyspark.ml.tests.test_algorithms__lh3wb2u8.log)
Starting test(python3): pyspark.ml.tests.test_evaluation (temp output:
/home/ec2-user/spark/python/target/3f42dc79-c945-4cf2-a1eb-83e72b40a9ee/python3__pyspark.ml.tests.test_evaluation__89idc7fa.log)
Finished test(python3): pyspark.ml.tests.test_base (16s)
Starting test(python3): pyspark.ml.tests.test_functions (temp output:
/home/ec2-user/spark/python/target/5a3b90f0-216b-4edd-9d15-6619d3e03300/python3__pyspark.ml.tests.test_functions__g5u1290s.log)
Traceback (most recent call last):
File "/usr/lib64/python3.7/runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "/usr/lib64/python3.7/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/home/ec2-user/spark/python/pyspark/ml/tests/test_functions.py",
line 21, in <module>
from pyspark.ml.functions import predict_batch_udf
File "/home/ec2-user/spark/python/pyspark/ml/functions.py", line 38, in
<module>
from typing import Any, Callable, Iterator, List, Mapping, Protocol,
TYPE_CHECKING, Tuple, Union
ImportError: cannot import name 'Protocol' from 'typing'
(/usr/lib64/python3.7/typing.py)
Had test failures in pyspark.ml.tests.test_functions with python3; see logs.
```
### Does this PR introduce _any_ user-facing change?
This change has not been released out yet so no user-facing change. But this
is a release blocker.
### How was this patch tested?
Manually tested via:
```bash
./python/run-tests --python-executables=python3
```
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