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https://issues.apache.org/jira/browse/PARQUET-1702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney reassigned PARQUET-1702:
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Assignee: Or Ozeri
> [C++] Make BufferedRowGroupWriter compatible with parquet encryption
> --------------------------------------------------------------------
>
> Key: PARQUET-1702
> URL: https://issues.apache.org/jira/browse/PARQUET-1702
> Project: Parquet
> Issue Type: Bug
> Components: parquet-cpp
> Affects Versions: cpp-1.6.0
> Reporter: Or Ozeri
> Assignee: Or Ozeri
> Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> The newly added parquet encryption feature currently works only with
> SerializedRowGroupWriter.
> There are several issues preventing the use of BufferedRowGroupWriter with
> encryption enabled:
> 1. Meta encryptor not passed on to ColumnChunkMetaDataBuilder::Finish. This
> can trigger a null-pointer dereference (reported as segmentation fault).
> 2. UpdateEncryption not called on Close, resulting in an incorrect AAD string
> when encrypting the column chunk metadata.
> 3. The column ordinal passed on to PageWriter::Open is always zero, resulting
> in a wrong AAD string when encrypting the columns data (except for the first
> column).
> 4. When decrypting a column chunk with no dictionary pages, PARQUET-1706
> confuses the decryptor to think it is decrypting a dictionary page, which
> again causes a wrong AAD string to be used when decrypting.
> We propose a patch (few dozen lines) to fix the above issues.
> We also extend the current parquet-encryption-test unit test, which tests
> SerializedRowGroupWriter, to test also with BufferedRowGroupWriter.
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