hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-7443) Add CRC32C as another DataChecksum implementation
Date Wed, 06 Jul 2011 04:36:16 GMT
Add CRC32C as another DataChecksum implementation
-------------------------------------------------

                 Key: HADOOP-7443
                 URL: https://issues.apache.org/jira/browse/HADOOP-7443
             Project: Hadoop Common
          Issue Type: New Feature
          Components: io, util
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon


CRC32C is another checksum very similar to our existing CRC32, but with a different polynomial.
The chief advantage of this other polynomial is that SSE4.2 includes hardware support for
its calculation. HDFS-2080 is the umbrella JIRA which proposes using this new polynomial to
save substantial amounts of CPU.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message