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Posted to dev@drill.apache.org by "salim achouche (JIRA)" <ji...@apache.org> on 2017/10/05 20:41:01 UTC

[jira] [Created] (DRILL-5846) Improve Parquet Reader Performance for Flat Data types

salim achouche created DRILL-5846:
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             Summary: Improve Parquet Reader Performance for Flat Data types 
                 Key: DRILL-5846
                 URL: https://issues.apache.org/jira/browse/DRILL-5846
             Project: Apache Drill
          Issue Type: Improvement
          Components: Storage - Parquet
    Affects Versions: 1.11.0
            Reporter: salim achouche
             Fix For: 1.12.0


The Parquet Reader is a key use-case for Drill. This JIRA is an attempt to further improve the Parquet Reader performance as several users reported that Parquet parsing represents the lion share of the overall query execution. It tracks Flat Data types only as Nested DTs might involve functional and processing enhancements (e.g., a nested column can be seen as a Document; user might want to perform operations scoped at the document level that is no need to span all rows). Another JIRA will be created to handle the nested columns use-case.



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