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Posted to issues@drill.apache.org by "Aman Sinha (JIRA)" <ji...@apache.org> on 2015/02/28 03:57:04 UTC

[jira] [Updated] (DRILL-2347) Parallelize metadata reads for Parquet metadata

     [ https://issues.apache.org/jira/browse/DRILL-2347?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aman Sinha updated DRILL-2347:
------------------------------
    Attachment: 0001-DRILL-2347-Support-parquet-metadata-read-paralleliza.patch

Uploaded Jacques's original patch combined with a fix I made to BlockMapBuilder.  [~sphillips] could you pls review ? 

> Parallelize metadata reads for Parquet metadata
> -----------------------------------------------
>
>                 Key: DRILL-2347
>                 URL: https://issues.apache.org/jira/browse/DRILL-2347
>             Project: Apache Drill
>          Issue Type: Improvement
>          Components: Metadata
>    Affects Versions: 0.7.0
>            Reporter: Aman Sinha
>            Assignee: Jacques Nadeau
>         Attachments: 0001-DRILL-2347-Support-parquet-metadata-read-paralleliza.patch
>
>
> During the planning process, reading the metadata from Parquet files is sequential, making the planning slow for large number of files.  This should be parallelized. 



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