zhengruifeng commented on code in PR #49792:
URL: https://github.com/apache/spark/pull/49792#discussion_r1942126649


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python/pyspark/ml/tests/test_clustering.py:
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@@ -461,6 +462,40 @@ def test_distributed_lda(self):
             model2 = DistributedLDAModel.load(d)
             self.assertEqual(str(model), str(model2))
 
+    # TODO(SPARK-51080): Fix save/load for PowerIterationClustering

Review Comment:
   Then it will save an instance of `PowerIterationClusteringWrapper`, and we 
may need additionally convert it to `PowerIterationClustering`.
   It will be better if we can directly save/load `PowerIterationClustering`



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