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https://issues.apache.org/jira/browse/PARQUET-332?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ryan Blue resolved PARQUET-332.
-------------------------------
Resolution: Not A Problem
Resolved from discussion on the mailing list. These changes are to a non-public
API.
> Incompatible changes in o.a.p.thrift.projection
> -----------------------------------------------
>
> Key: PARQUET-332
> URL: https://issues.apache.org/jira/browse/PARQUET-332
> Project: Parquet
> Issue Type: Bug
> Components: parquet-mr
> Reporter: Ryan Blue
> Fix For: 1.8.0
>
>
> There are incompatible changes in o.a.p.thrift.projection that weren't caught
> because of PARQUET-330:
> * The return type of [{{FieldsPath#push(ThriftField)}}
> changed|https://github.com/apache/parquet-mr/commit/ded56ffd598e41e32817f6c1b091595fe7122e8b#diff-e990fead0bb1a6faa5080efba86bc81fL34]
> ([return type compatibility
> ref|https://docs.oracle.com/javase/specs/jls/se7/html/jls-13.html#jls-13.4.15])
> * [{{FieldProjectionFilter}} changed to an
> interface|https://github.com/apache/parquet-mr/commit/7fc7998398373a14b4cdc0ce18abdeb221b1ccf9#diff-49628343f8d6daf6cb774b6c6ccab82cL29]
> Both of these are incompatibilities if {{FieldProjectionFilter}} is part of
> the public API, which it appears to be because it is used by the
> ScroogeReadSupport and the ThriftSchemaConverter (public constructor).
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