SPRKPY1041

pyspark.sql.functions.explode_outer

This issue code has been deprecated since Spark Conversion Core Version 2.9.0

Message: pyspark.sql.functions.explode_outer has a workaround

Category: Warning

Description

This issue appears when the tool detects the usage of pyspark.sql.functions.explode_outer which has a workaround.

Scenario

Input

The example shows the use of the method explode_outer in a select call.

df = spark.createDataFrame(
    [(1, ["foo", "bar"], {"x": 1.0}),
     (2, [], {}),
     (3, None, None)],
    ("id", "an_array", "a_map")
)

df.select("id", "an_array", explode_outer("a_map")).show()

Output

The tool adds the EWI SPRKPY1041 indicating that a workaround can be implemented.

df = spark.createDataFrame(
    [(1, ["foo", "bar"], {"x": 1.0}),
     (2, [], {}),
     (3, None, None)],
    ("id", "an_array", "a_map")
)

#EWI: SPRKPY1041 => pyspark.sql.functions.explode_outer has a workaround, see documentation for more info
df.select("id", "an_array", explode_outer("a_map")).show()

Recommended fix

As a workaround, you can import the snowpark_extensions package, which contains a helper for the explode_outer function.

import snowpark_extensions

df = spark.createDataFrame(
    [(1, ["foo", "bar"], {"x": 1.0}),
     (2, [], {}),
     (3, None, None)],
    ("id", "an_array", "a_map")
)

df.select("id", "an_array", explode_outer("a_map")).show()

Additional recommendations

• For more support, you can email us at [email protected] or post an issue in the SMA.