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Benedict commented on CASSANDRA-6906: ------------------------------------- bq. could That's an understatement. Let's open a ticket and I'll look at it next week. That _needs_ to be addressed. I can't imagine how long a 1k node cluster with vnodes must be spending! > Skip Replica Calculation for Range Slice on LocalStrategy Keyspace > ------------------------------------------------------------------ > > Key: CASSANDRA-6906 > URL: https://issues.apache.org/jira/browse/CASSANDRA-6906 > Project: Cassandra > Issue Type: Improvement > Components: Core > Reporter: Tyler Hobbs > Assignee: Tyler Hobbs > Priority: Minor > Fix For: 2.0.7, 2.1 beta2 > > Attachments: 6906.txt > > > For vnode-enabled clusters, the "Determining replicas to query" portion of > range slice commands can be expensive. When querying LocalStrategy > keyspaces, we can safely skip this step. On a 15 node cluster with vnodes, > skipping this saves about 100ms. This makes a big difference for the > drivers, which frequently execute queries like "select * from system.peers" > and "select * from system.local". -- This message was sent by Atlassian JIRA (v6.2#6252)