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https://issues.apache.org/jira/browse/DRILL-4070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15002607#comment-15002607
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Julien Le Dem commented on DRILL-4070:
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[~jaltekruse] For future proofing we should probably add Drill version in the
parquet footer. in the extra_metadata field.
> Metadata Caching : min/max values are null for varchar columns in auto
> partitioned data
> ---------------------------------------------------------------------------------------
>
> Key: DRILL-4070
> URL: https://issues.apache.org/jira/browse/DRILL-4070
> Project: Apache Drill
> Issue Type: Bug
> Components: Metadata
> Affects Versions: 1.3.0
> Reporter: Rahul Challapalli
> Priority: Critical
> Attachments: cache.txt, fewtypes_varcharpartition.tar.tgz
>
>
> git.commit.id.abbrev=e78e286
> The metadata cache file created contains incorrect values for min/max fields
> for varchar colums. The data is also partitioned on the varchar column
> {code}
> refresh table metadata fewtypes_varcharpartition;
> {code}
> As a result partition pruning is not happening. This was working after
> DRILL-3937 has been fixed (d331330efd27dbb8922024c4a18c11e76a00016b)
> I attached the data set and the cache file
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