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From "T Jake Luciani (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-5862) Switch to adler checksum for sstables
Date Thu, 08 Aug 2013 19:53:48 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-5862?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

T Jake Luciani updated CASSANDRA-5862:
--------------------------------------

    Attachment: 5862.txt

Patch attached, I switched to adler32 and changed checksumming to be on the compressed value.
 Going to run some benchmarks now.
                
> Switch to adler checksum for sstables
> -------------------------------------
>
>                 Key: CASSANDRA-5862
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5862
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: T Jake Luciani
>             Fix For: 2.0.1
>
>         Attachments: 5862.txt
>
>
> Adler is significantly faster than CRC32: http://java-performance.info/java-crc32-and-adler32/
> (Adler is weaker for short inputs, so we should leave the commitlog alone, as it checksums
each mutation individually.)

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