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Mastering Apache Cassandra 3.x - Third Edition
book

Mastering Apache Cassandra 3.x - Third Edition

by Aaron Ploetz, Tejaswi Malepati
October 2018
Beginner to intermediate content levelBeginner to intermediate
348 pages
10h
English
Packt Publishing
Content preview from Mastering Apache Cassandra 3.x - Third Edition

A warning about SimpleStrategy

Do note that, if existing keyspaces are defined using SimpleStrategy, queries running at LOCAL consistency levels (mainly LOCAL_QUORUM) could begin to fail. The Simple replication strategy is not data center-aware, so queries could be directed to the new nodes before they have data. This behavior is the main failing of SimpleStrategy.

To get data to the nodes in the new data center, we'll need to first modify the keyspace(s) to allow replication to them, as follows:

ALTER KEYSPACE packt WITH replication = {'class': 'NetworkTopologyStrategy', 'ClockworkAngels': '3', 'VaporTrails': '3'};
Remember, you will also need to adjust replication for the system_auth, system_distributed, and system_traces keyspaces as well. ...
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Publisher Resources

ISBN: 9781789131499Supplemental Content