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https://issues.apache.org/jira/browse/CASSANDRA-5625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13690115#comment-13690115
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Mikhail Mazursky commented on CASSANDRA-5625:
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Can someone merge this?
> Cleanup Tracing class
> ---------------------
>
> Key: CASSANDRA-5625
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5625
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Mikhail Mazursky
> Priority: Trivial
> Attachments: trunk-5625.patch
>
>
> 1. Tracing instance cannot be null because it's initialized at classloading
> time and never changes. Made it final to prove that. Removed all redundant
> null checks.
> 2. StorageService has a Tracing.instance() call - it should trace something
> or can be removed?
> 3. Made sessions a ConcurrentMap to stress that it should be thread-safe.
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