Jose Antonio created SPARK-11481:
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Summary: orderBy with multiple columns in WindowSpec does not work
properly
Key: SPARK-11481
URL: https://issues.apache.org/jira/browse/SPARK-11481
Project: Spark
Issue Type: Bug
Components: PySpark, SQL
Affects Versions: 1.5.1
Environment: All
Reporter: Jose Antonio
When using multiple columns in the orderBy of a WindowSpec the order by seems
to work only for the first column.
A possible workaround is to sort previosly the DataFrame and then apply the
window spec over the sorted DataFrame
e.g.
THIS NOT WORKS:
window_sum = Window.partitionBy('user_unique_id').orderBy('creation_date',
'mib_id', 'day').rowsBetween(-sys.maxsize, 0)
df = df.withColumn('user_version', func.sum(df.group_counter).over(window_sum))
THIS WORKS WELL:
df = df.sort('user_unique_id', 'creation_date', 'mib_id', 'day')
window_sum = Window.partitionBy('user_unique_id').orderBy('creation_date',
'mib_id', 'day').rowsBetween(-sys.maxsize, 0)
df = df.withColumn('user_version', func.sum(df.group_counter).over(window_sum))
Also, can anybody confirm that this is a true workaround?
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