Joseph K. Bradley created SPARK-9691:
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Summary: PySpark SQL rand function treats seed 0 as no seed
Key: SPARK-9691
URL: https://issues.apache.org/jira/browse/SPARK-9691
Project: Spark
Issue Type: Bug
Components: PySpark, SQL
Affects Versions: 1.4.1, 1.4.0, 1.4.2, 1.5.0
Reporter: Joseph K. Bradley
In PySpark SQL's rand() function, it tests for a seed in a way such that seed 0
is treated as no seed, leading to non-deterministic results when a user would
expect deterministic results.
See:
[https://github.com/apache/spark/blob/98e69467d4fda2c26a951409b5b7c6f1e9345ce4/python/pyspark/sql/functions.py#L271]
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