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https://issues.apache.org/jira/browse/SPARK-25104?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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DB Tsai resolved SPARK-25104.
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Resolution: Fixed
Fix Version/s: 2.4.0
Issue resolved by pull request 22094
[https://github.com/apache/spark/pull/22094]
> Validate user specified output schema
> -------------------------------------
>
> Key: SPARK-25104
> URL: https://issues.apache.org/jira/browse/SPARK-25104
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Gengliang Wang
> Assignee: Gengliang Wang
> Priority: Major
> Fix For: 2.4.0
>
>
> With code changes in
> [https://github.com/apache/spark/pull/21847|https://github.com/apache/spark/pull/21847,]
> , Spark can write out data as per user provided output schema.
> To make it more robust and user friendly, we should validate the Avro schema
> before tasks launched.
> Also we should support output logical decimal type as BYTES (By default we
> output as FIXED)
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