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https://issues.apache.org/jira/browse/PARQUET-1548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16798136#comment-16798136
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Michael O'Shea commented on PARQUET-1548:
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Hey,
So the variable 'schema' is being passed to AvroSchemaConverter#getNonNull.
This has some meta data in the props field. We see both the string schema and
null schema in the 'schemas' variable do not contain this meta data.
This schema is then used when writing to parquet the meta data is thus lost.
!image-2019-03-21-14-26-12-813.png!
> Meta data is lost when writing avro union types to parquet
> ----------------------------------------------------------
>
> Key: PARQUET-1548
> URL: https://issues.apache.org/jira/browse/PARQUET-1548
> Project: Parquet
> Issue Type: Bug
> Components: parquet-avro
> Environment: macOS -mojave
> Reporter: Michael O'Shea
> Priority: Major
> Attachments: image-2019-03-21-14-26-12-813.png
>
>
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