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https://issues.apache.org/jira/browse/SPARK-20481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15985716#comment-15985716
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Xiao Li commented on SPARK-20481:
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We are unable to make a change in this default data type mapping. It can cause
external behavior changes.
In Spark 2.2., you can manually change it by using the option
`createTableColumnTypes`. For details, see the following PR:
https://github.com/apache/spark/pull/16209
> Wrong mapping for BooleanType in Spark SQL
> ------------------------------------------
>
> Key: SPARK-20481
> URL: https://issues.apache.org/jira/browse/SPARK-20481
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.1.0
> Reporter: Talat UYARER
> Priority: Minor
>
> Booleantype is mapping to BIT type on SQL side.
> https://github.com/apache/spark/blob/a26e3ed5e414d0a350cfe65dd511b154868b9f1d/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JdbcUtils.scala#L159
> Is there is any specific reason it should be mapping to Boolean
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