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https://issues.apache.org/jira/browse/SPARK-8801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-8801.
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Resolution: Fixed
Fix Version/s: 1.5.0
> Support TypeCollection in ExpectsInputTypes
> -------------------------------------------
>
> Key: SPARK-8801
> URL: https://issues.apache.org/jira/browse/SPARK-8801
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Reynold Xin
> Fix For: 1.5.0
>
>
> Some functions support more than one input types for each parameter. For
> example, length supports binary and string, and maybe array/struct in the
> future.
> This ticket proposes a TypeCollection AbstractDataType that supports multiple
> data types.
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