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https://issues.apache.org/jira/browse/CASSANDRA-3611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13167166#comment-13167166
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Peter Schuller commented on CASSANDRA-3611:
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This may already have been implied, but on reads it might make sense to support
a percentage checking chance similarly to read-repair so that you can at least
detect if things are really broken, at a presumably low cost (if the randomness
isn't too expensive, but it shouldn't be with a thread-local Random), rather
than having to choose between binary on/off.
Any measurements on relative cost of checksumming?
> Make checksum on a compressed blocks optional
> ---------------------------------------------
>
> Key: CASSANDRA-3611
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3611
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 1.1
> Reporter: Vijay
> Assignee: Vijay
> Priority: Minor
> Fix For: 1.1
>
>
> Currently every uncompressed block is run against checksum algo, there is cpu
> overhead in doing same... We might want to make it configurable/optional for
> some use cases which might not require checksum all the time.
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