Github user WeichenXu123 commented on a diff in the pull request:
https://github.com/apache/spark/pull/20058#discussion_r158932419
--- Diff: python/pyspark/ml/base.py ---
@@ -18,13 +18,40 @@
from abc import ABCMeta, abstractmethod
import copy
+import threading
from pyspark import since
-from pyspark.ml.param import Params
from pyspark.ml.param.shared import *
from pyspark.ml.common import inherit_doc
from pyspark.sql.functions import udf
-from pyspark.sql.types import StructField, StructType, DoubleType
+from pyspark.sql.types import StructField, StructType
+
+
+class FitMutlipleIterator(object):
--- End diff --
What about change this `FitMutlipleIterator` class to be an inner class in
default implementation method `fitMultiple` ? I think put it outside will be no
other usage.
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