Joseph K. Bradley created SPARK-14605:
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Summary: Python spark.ml classes should use unicode uid
Key: SPARK-14605
URL: https://issues.apache.org/jira/browse/SPARK-14605
Project: Spark
Issue Type: Improvement
Components: ML, PySpark
Reporter: Joseph K. Bradley
Assignee: Joseph K. Bradley
Priority: Minor
Python spark.ml Identifiable classes use UIDs of type {{str}}, but they should
use {{unicode}} (in Python 2.x) to match Java. This could be a problem if
someone created a class in Java with odd unicode characters, saved it, and
loaded it in Python.
This is also odd since the following code in Python produces a class {{lr}}
with {{str}} uid and {{lr2}} with {{unicode}} uid:
{code}
from pyspark.ml.regression import LinearRegression
lr = LinearRegression(maxIter=1)
lr_path = "lr-TEMP"
lr.write.overwrite().save(lr_path)
lr2 = LinearRegression.load(lr_path)
{code}
Proposal: Use unicode everywhere in Python.
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