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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

Time synchronization

As Cassandra's log-based storage is timestamp-driven, it is absolutely critical that all nodes in a cluster have synchronized clocks. To this end, instances running Cassandra should be using NTPD or another time synchronization application to keep all system clocks in a cluster in sync.

Issues related to time synchronization discrepancies can manifest themselves as obsolete data or deleted data ghosting itself.

Consider the following current times from instances in a three-node cluster:

Figure 4.1: A three-node cluster, where one node is behind by about 13 seconds

Let's say I run the following CQL to create a simple table: ...

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Publisher Resources

ISBN: 9781789131499Supplemental Content