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https://issues.apache.org/jira/browse/PARQUET-1792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17242521#comment-17242521
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Gabor Szadovszky commented on PARQUET-1792:
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Removed the target 1.12.0.
> Add 'mask' command to parquet-tools/parquet-cli
> -----------------------------------------------
>
> Key: PARQUET-1792
> URL: https://issues.apache.org/jira/browse/PARQUET-1792
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-mr
> Affects Versions: 1.12.0
> Reporter: Xinli Shang
> Assignee: Xinli Shang
> Priority: Major
>
> Some personal data columns need to be masked instead of being
> pruned(Parquet-1791). We need a tool to replace the raw data columns with
> masked value. The masked value could be hash, null, redact etc. For the
> unchanged columns, they should be moved as a whole like 'merge', 'prune'
> command in Parquet-tools.
>
> Implementing this feature in file format is 10X faster than doing it by
> rewriting the table data in the query engine.
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