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From "sankalp kohli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7928) Digest queries do not require alder32 checks
Date Fri, 04 Mar 2016 19:14:41 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15180397#comment-15180397
] 

sankalp kohli commented on CASSANDRA-7928:
------------------------------------------

Sure close it. 

> Digest queries do not require alder32 checks
> --------------------------------------------
>
>                 Key: CASSANDRA-7928
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7928
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: sankalp kohli
>            Priority: Minor
>              Labels: performance
>             Fix For: 3.x
>
>
>  While reading data from sstables, C* does Alder32 checks for any data being read. We
have seen that this causes higher CPU usage while doing kernel profiling. These checks might
not be useful for digest queries as they will have a different digest in case of corruption.

>  



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