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From "Prasanth J (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-7219) Improve performance of serialization utils in ORC
Date Tue, 17 Jun 2014 18:01:17 GMT

     [ https://issues.apache.org/jira/browse/HIVE-7219?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Prasanth J updated HIVE-7219:
-----------------------------

       Resolution: Fixed
    Fix Version/s: 0.14.0
           Status: Resolved  (was: Patch Available)

Committed to trunk. Thanks [~hagleitn] and [~gopalv] for the code review.

> Improve performance of serialization utils in ORC
> -------------------------------------------------
>
>                 Key: HIVE-7219
>                 URL: https://issues.apache.org/jira/browse/HIVE-7219
>             Project: Hive
>          Issue Type: Improvement
>          Components: File Formats
>    Affects Versions: 0.14.0
>            Reporter: Prasanth J
>            Assignee: Prasanth J
>             Fix For: 0.14.0
>
>         Attachments: HIVE-7219.1.patch, HIVE-7219.2.patch, HIVE-7219.3.patch, HIVE-7219.4.patch,
orc-read-perf-jmh-benchmark.png
>
>
> ORC uses serialization utils heavily for reading and writing data. The bitpacking and
unpacking code in writeInts() and readInts() can be unrolled for better performance. Also
double reader/writer performance can be improved by bulk reading/writing from/to byte array.



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