Joseph K. Bradley created SPARK-25397:
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Summary: SparkSession.conf fails when given default value with
Python 3
Key: SPARK-25397
URL: https://issues.apache.org/jira/browse/SPARK-25397
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.3.1
Reporter: Joseph K. Bradley
Spark 2.3.1 has a Python 3 incompatibility when requesting a Conf value from
SparkSession when you give non-string default values. Reproduce via
SparkSession call:
{{spark.conf.get("myConf", False)}}
This gives the error:
{code}
>>> spark.conf.get("myConf", False)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File
"/Users/josephkb/work/spark-bin/spark-2.3.1-bin-hadoop2.7/python/pyspark/sql/conf.py",
line 51, in get
self._checkType(default, "default")
File
"/Users/josephkb/work/spark-bin/spark-2.3.1-bin-hadoop2.7/python/pyspark/sql/conf.py",
line 62, in _checkType
if not isinstance(obj, str) and not isinstance(obj, unicode):
*NameError: name 'unicode' is not defined*
{code}
The offending line in Spark in branch-2.3 is:
https://github.com/apache/spark/blob/branch-2.3/python/pyspark/sql/conf.py
which uses the value {{unicode}} which is not available in Python 3.
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