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https://issues.apache.org/jira/browse/CASSANDRA-14094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16277879#comment-16277879
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Jeff Jirsa commented on CASSANDRA-14094:
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Trivial fixes for just the compression paths:

|| 3.0 || 3.11 || trunk||
| [branch|https://github.com/jeffjirsa/cassandra/commits/cassandra-3.0-14094] | 
[branch|https://github.com/jeffjirsa/cassandra/commits/cassandra-3.11-14094] | 
[branch|https://github.com/jeffjirsa/cassandra/commits/cassandra-14094] |
| [utests & 
dtests|https://circleci.com/gh/jeffjirsa/cassandra/tree/cassandra-3.0-14094] | 
[branch|https://circleci.com/gh/jeffjirsa/cassandra/tree/cassandra-3.11-14094] 
| [branch|https://circleci.com/gh/jeffjirsa/cassandra/tree/cassandra-14094] |



> Avoid pointless calls to ThreadLocalRandom
> ------------------------------------------
>
>                 Key: CASSANDRA-14094
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14094
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jeff Jirsa
>            Assignee: Jeff Jirsa
>            Priority: Minor
>             Fix For: 3.0.x, 3.11.x, 4.x
>
>
> In the compression paths, we probabilistically validate the checksum. In 
> cases where the chance is 100%, we don’t need to call {{ThreadLocalRandom}} .



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