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mickdelaney/pyspark-udf.py

Forked from zoltanctoth/pyspark-udf.py
Created January 8, 2017 20:13
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Writing an UDF for withColumn in PySpark
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pyspark-udf.py
from pyspark.sql.types import StringType
from pyspark.sql.functions import udf
maturity_udf = udf(lambda age: "adult" if age >=18 else "child", StringType())
df = sqlContext.createDataFrame([{'name': 'Alice', 'age': 1}])
df.withColumn("maturity", maturity_udf(df.age))
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