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https://issues.apache.org/jira/browse/PARQUET-405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ben Kirwin resolved PARQUET-405.
--------------------------------
Resolution: Duplicate
> Backwards-incompatible change to thrift metadata
> ------------------------------------------------
>
> Key: PARQUET-405
> URL: https://issues.apache.org/jira/browse/PARQUET-405
> Project: Parquet
> Issue Type: Bug
> Affects Versions: 1.8.0
> Reporter: Ben Kirwin
>
> Sometime in the last few versions, a {{isStructOrUnion}} field has been added
> to the `thrift.descriptor` written to the parquet header:
> {code}
> {
> "children": [ ... ],
> "id": "STRUCT",
> "structOrUnionType": "STRUCT"
> }
> {code}
> The current release now throws an exception when that field is missing /
> {{UNKNOWN}}). This makes it impossible to read back thrift data written using
> a previous release.
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