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From "BELUGA BEHR (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-16022) Increase Compression Buffer Sizes - Remove Magic Numbers
Date Thu, 27 Dec 2018 18:06:00 GMT
BELUGA BEHR created HADOOP-16022:
------------------------------------

             Summary: 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


{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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