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From parthchandra <...@git.apache.org>
Subject [GitHub] drill pull request #723: Improve Parquet Scan pipelining.
Date Fri, 20 Jan 2017 07:06:56 GMT
GitHub user parthchandra opened a pull request:

    https://github.com/apache/drill/pull/723

    Improve Parquet Scan pipelining.

      Add a configurable AsyncPageReader Queue.
      Enforce total size of parquet row group.
      Do not initialize BufferedDirectBufInputStream buffer in init. Wait for
    first read.
      Change default size of BufferedDirectBufInputStream.
      Do not invoke getOptions too many times in Parquet reader.
      Add metrics for processing time, and decoding time for varlen and fixedlen columns.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/parthchandra/drill DRILL-5207

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/drill/pull/723.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #723
    
----
commit 55e004a452039f553731ba1b6a3e4bc8baadc2a9
Author: Parth Chandra <parthc@apache.org>
Date:   2016-12-14T20:08:20Z

    Improve Parquet Scan pipelining.
      Add a configurable AsyncPageReader Queue.
      Enforce total size of parquet row group.
      Do not initialize BufferedDirectBufInputStream buffer in init. Wait for
    first read.
      Change default size of BufferedDirectBufInputStream.
      Do not invoke getOptions too many times in Parquet reader.
      Add metrics for processing time, and decoding time for varlen and fixedlen columns.

----


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