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https://issues.apache.org/jira/browse/CASSANDRA-3611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13167163#comment-13167163
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Sylvain Lebresne commented on CASSANDRA-3611:
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Note that CASSANDRA-3456 is not on for compressed sstables, but only to avoid
computing checksums twice (it would be trivial to put it on though).
In any case, I think it would be reasonable to have the checksum check optional
(on reads), but would be less convinced about removing checksums from the data
file (it doesn't seems to me that the overhead on write is a big deal).
> 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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