Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18378#discussion_r123425404
--- Diff: python/pyspark/sql/dataframe.py ---
@@ -1721,7 +1721,14 @@ def toPandas(self):
1 5 Bob
"""
import pandas as pd
- return pd.DataFrame.from_records(self.collect(),
columns=self.columns)
+
+ dtype = {}
+ for field in self.schema:
+ pandas_type = _to_corrected_pandas_type(field.dataType)
+ if (pandas_type):
+ dtype[field.name] = pandas_type
+
+ return pd.DataFrame.from_records(self.collect(),
columns=self.columns).astype(dtype)
--- End diff --
The param `copy` of `astype` is true by default. Seems to me we don't need
copying the data?
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