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From "BELUGA BEHR (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HADOOP-16022) Increase Compression Buffer Sizes - Remove Magic Numbers
Date Thu, 27 Dec 2018 18:07:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-16022?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

BELUGA BEHR reassigned HADOOP-16022:
------------------------------------

    Assignee: BELUGA BEHR

> Increase Compression Buffer Sizes - Remove Magic Numbers
> --------------------------------------------------------
>
>                 Key: HADOOP-16022
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16022
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: io
>    Affects Versions: 2.10.0, 3.2.0
>            Reporter: BELUGA BEHR
>            Assignee: BELUGA BEHR
>            Priority: Minor
>         Attachments: HADOOP-16022.1.patch
>
>
> {code:java|title=Compression.java}
>     // data input buffer size to absorb small reads from application.
>     private static final int DATA_IBUF_SIZE = 1 * 1024;
>     // data output buffer size to absorb small writes from application.
>     private static final int DATA_OBUF_SIZE = 4 * 1024;
> {code}
> There exists these hard coded buffer sizes in the Compression code.  Instead, use the
JVM default sizes, which, this day and age, are usually set for 8K.
>  



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