Github user cocoatomo commented on the pull request:
https://github.com/apache/spark/pull/6967#issuecomment-117418734
Hi, @JoshRosen
When running run-tests.py with Python 2.6, I got a folloing error:
```
Running PySpark tests. Output is in
python//Users/tomohiko/.jenkins/jobs/pyspark_test/workspace/python/unit-tests.log
Will test against the following Python executables: ['python2.6',
'python3.4', 'pypy']
Will test the following Python modules: ['pyspark-core', 'pyspark-ml',
'pyspark-mllib', 'pyspark-sql', 'pyspark-streaming']
Traceback (most recent call last):
File "./python/run-tests.py", line 196, in <module>
main()
File "./python/run-tests.py", line 159, in main
python_implementation = subprocess.check_output(
AttributeError: 'module' object has no attribute 'check_output'
```
The cause of this error is using subprocess.check_output function, which
exists since Python 2.7.
(ref.
https://docs.python.org/2.7/library/subprocess.html#subprocess.check_output)
The paragraph https://spark.apache.org/docs/latest/#downloading says "Spark
runs on Java 6+, Python 2.6+...", so should we make run-tests.py enable to run
on Python 2.6?
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