Re: [PR] [SPARK-49821][SS][PYTHON] Implement MapState and TTL support for TransformWithStateInPandas [spark]

["jingz-db (via GitHub)" <gi...@apache.org>]

jingz-db commented on code in PR #48290:
URL: https://github.com/apache/spark/pull/48290#discussion_r1792273531


##########
python/pyspark/sql/streaming/list_state_client.py:
##########
@@ -78,8 +78,11 @@ def get(self, state_name: str, iterator_id: str) -> Tuple:
             status = response_message[0]
             if status == 0:
                 iterator = self._stateful_processor_api_client._read_arrow_state()
-                batch = next(iterator)
-                pandas_df = batch.to_pandas()
+                data_batch = None

Review Comment:
   A bit confused here, this code snippet is trying to deal with multiple batches but only keep the data in the last batch?



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