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https://issues.apache.org/jira/browse/DRILL-4602?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christian updated DRILL-4602:
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Attachment: 0001-Fixing-avro-union-types.patch
Attached is a test case and the fix for this.
> Avro files dont work if the union format is ["some-type", "null"]
> -----------------------------------------------------------------
>
> Key: DRILL-4602
> URL: https://issues.apache.org/jira/browse/DRILL-4602
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - Avro
> Affects Versions: 1.6.0
> Reporter: Christian
> Fix For: 1.7.0
>
> Attachments: 0001-Fixing-avro-union-types.patch
>
>
> An avro files generated by a different system (e.g. Spark) can have a
> slightly different union format, that is not understood by drill. For example
> ["some-type", "null"] will cause an error when [ "null", "some-type"] still
> works.
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