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https://issues.apache.org/jira/browse/CASSANDRA-5862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13776044#comment-13776044
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Bert Sanders commented on CASSANDRA-5862:
-----------------------------------------
Thanks, my bad, I was confused.
If my understanding is correct, SStables are a set of 2 files,
one index, with bloom filters and Key/offset pairs
and one for data by column.
So I guess this issue is only about checksumming of the data part.
And about real-world benefits :
I guess that if testing with Adler32 was enough to measure benefits,
a faster Hash should be even easier to measure.
> 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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