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https://issues.apache.org/jira/browse/CASSANDRA-21467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18099437#comment-18099437
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Francisco Guerrero commented on CASSANDRA-21467:
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Pushed the commit here:
https://github.com/apache/cassandra/pull/4883/changes/d1af67495638442db737dc51e28f7201ff9632c0
. I will start the merge now.
> Reduce allocations in DefaultQueryOptions
> -----------------------------------------
>
> Key: CASSANDRA-21467
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21467
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: Local/Other
> Reporter: Francisco Guerrero
> Assignee: Francisco Guerrero
> Priority: Low
> Fix For: 6.x, 7.x
>
>
> In
> {{org.apache.cassandra.cql3.QueryOptions.DefaultQueryOptions#readThresholds}}
> we always create an instance of {{DefaultReadThresholds}} when read
> thresholds are enabled. We can avoid the initialization by instead having a
> static instance of {{DefaultReadThresholds}} and always reading the values
> from {{DatabaseDescriptor}}. The estimated savings are ~32 bytes per request.
> Every request when thresholds are enabled. The proposed solution is mirroring
> the existing behavior when read thresholds are disabled.
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