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From "Jeff Jirsa (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-14094) Avoid pointless calls to ThreadLocalRandom
Date Tue, 05 Dec 2017 01:48:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-14094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16277879#comment-16277879
] 

Jeff Jirsa edited comment on CASSANDRA-14094 at 12/5/17 1:47 AM:
-----------------------------------------------------------------

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]
| [utests & dtests|https://circleci.com/gh/jeffjirsa/cassandra/tree/cassandra-3.11-14094]
| [utests & dtests|https://circleci.com/gh/jeffjirsa/cassandra/tree/cassandra-14094] |




was (Author: jjirsa):
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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