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Posted to dev@parquet.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2018/09/25 11:26:00 UTC
[jira] [Created] (PARQUET-1423) [C++] Support reading
non-dictionary encoded binary Parquet columns directly as DictionaryArray
Wes McKinney created PARQUET-1423:
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Summary: [C++] Support reading non-dictionary encoded binary Parquet columns directly as DictionaryArray
Key: PARQUET-1423
URL: https://issues.apache.org/jira/browse/PARQUET-1423
Project: Parquet
Issue Type: Improvement
Components: parquet-cpp
Reporter: Wes McKinney
Fix For: cpp-1.6.0
If the goal is to hash this data anyway into a categorical-type array, then it would be better to offer the option to "push down" the hashing into the Parquet read hot path rather than first fully materializing a dense vector of {{ByteArray}} values, which could use a lot of memory after decompression
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