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https://issues.apache.org/jira/browse/SPARK-1512?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Armbrust resolved SPARK-1512.
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Resolution: Fixed
> improve spark sql to support table with more than 22 fields
> -----------------------------------------------------------
>
> Key: SPARK-1512
> URL: https://issues.apache.org/jira/browse/SPARK-1512
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: wangfei
> Fix For: 1.0.0
>
>
> spark sql use case class to define a table, so 22 fields limit in case
> classes lead to spark sql not support wide(more than 22 fields) tables. wide
> table is common in many cases
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