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Posted to common-dev@hadoop.apache.org by "Tsz Wo Nicholas Sze (JIRA)" <ji...@apache.org> on 2014/07/03 01:54:24 UTC

[jira] [Created] (HADOOP-10778) Use NativeCrc32 only if it is faster

Tsz Wo Nicholas Sze created HADOOP-10778:
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             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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