Ruifeng Zheng created SPARK-41880:
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Summary: Function `from_json` should support non-literal expression
Key: SPARK-41880
URL: https://issues.apache.org/jira/browse/SPARK-41880
Project: Spark
Issue Type: Sub-task
Components: Connect, PySpark
Affects Versions: 3.4.0
Reporter: Ruifeng Zheng
{code:java}
File "/Users/ruifeng.zheng/Dev/spark/python/pyspark/sql/connect/functions.py",
line 1351, in pyspark.sql.connect.functions.from_json
Failed example:
df.select(from_json(df.value, schema).alias("json")).collect()
Exception raised:
Traceback (most recent call last):
File
"/Users/ruifeng.zheng/.dev/miniconda3/envs/spark_dev/lib/python3.9/doctest.py",
line 1334, in __run
exec(compile(example.source, filename, "single",
File "<doctest pyspark.sql.connect.functions.from_json[12]>", line 1, in
<module>
df.select(from_json(df.value, schema).alias("json")).collect()
File
"/Users/ruifeng.zheng/Dev/spark/python/pyspark/sql/connect/dataframe.py", line
1019, in collect
pdf = self.toPandas()
File
"/Users/ruifeng.zheng/Dev/spark/python/pyspark/sql/connect/dataframe.py", line
1054, in toPandas
return self._session.client.to_pandas(query)
File
"/Users/ruifeng.zheng/Dev/spark/python/pyspark/sql/connect/client.py", line
413, in to_pandas
return self._execute_and_fetch(req)
File
"/Users/ruifeng.zheng/Dev/spark/python/pyspark/sql/connect/client.py", line
573, in _execute_and_fetch
self._handle_error(rpc_error)
File
"/Users/ruifeng.zheng/Dev/spark/python/pyspark/sql/connect/client.py", line
625, in _handle_error
raise SparkConnectException(status.message) from None
pyspark.sql.connect.client.SparkConnectException: Schema in from_json
should be literal string, but got 'schema_of_json({"a": 0})
{code}
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