Francisco Guerrero created CASSANDRA-21467:
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Summary: Reduce allocations in DefaultQueryOptions
Key: CASSANDRA-21467
URL: https://issues.apache.org/jira/browse/CASSANDRA-21467
Project: Apache Cassandra
Issue Type: Improvement
Reporter: Francisco Guerrero
Assignee: Francisco Guerrero
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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