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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-10778) Use NativeCrc32 only if it is faster
Date Wed, 02 Jul 2014 23:54:24 GMT
Tsz Wo Nicholas Sze created HADOOP-10778:
--------------------------------------------

             Summary: Use NativeCrc32 only if it is faster
                 Key: HADOOP-10778
                 URL: https://issues.apache.org/jira/browse/HADOOP-10778
             Project: Hadoop Common
          Issue Type: Improvement
          Components: util
            Reporter: Tsz Wo Nicholas Sze
            Assignee: Tsz Wo Nicholas Sze


>From the branch mark post in [this comment|https://issues.apache.org/jira/browse/HDFS-6560?focusedCommentId=14044060&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14044060],
NativeCrc32 is slower than java.util.zip.CRC32 for Java 7 and above when bytesPerChecksum
> 512.



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