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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2016/11/29 23:39:58 UTC

[jira] [Assigned] (SPARK-18637) Stateful UDF should be considered as nondeterministic

     [ https://issues.apache.org/jira/browse/SPARK-18637?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-18637:
------------------------------------

    Assignee: Apache Spark

> Stateful UDF should be considered as nondeterministic
> -----------------------------------------------------
>
>                 Key: SPARK-18637
>                 URL: https://issues.apache.org/jira/browse/SPARK-18637
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Zhan Zhang
>            Assignee: Apache Spark
>
> If the annotation UDFType of a udf is stateful, it shoudl be considered as non-deterministic. Otherwise, the catalyst may optimize the plan and return the wrong result.



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