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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2019/04/18 13:13:42 UTC

[GitHub] [spark] zivanfi commented on issue #23721: [SPARK-26797][SQL][WIP][test-maven] Start using the new logical types API of Parquet 1.11.0 instead of the deprecated one

zivanfi commented on issue #23721: [SPARK-26797][SQL][WIP][test-maven] Start using the new logical types API of Parquet 1.11.0 instead of the deprecated one
URL: https://github.com/apache/spark/pull/23721#issuecomment-484502195
 
 
   Parquet 1.11 is not released yet, but the release candidate provides [several new features, improvements and bugfixes](https://github.com/apache/parquet-mr/blob/master/CHANGES.md), most notably:
   
   - A new (but backwards- and forwards-compatible) logical type system that allows representation of timestamps with different semantics.
   - Column indexes, which allows pinpointing pages matching query conditions, leading to significant performance improvements in highly selective queries.

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