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Clock skew across a Cassandra cluster

Updated on April 5, 2022

This content applies only to On-premises and Client-managed cloud environments

Clock skew across a Cassandra cluster can cause synchronization and replication issues.

For example, data might reappear after deletion, or seemingly successful modifications might not be visible.

Remedy

  • Use the Network Time Protocol daemon to synchronize clocks for all nodes in the cluster.
    Note: Acceptable skew is 10 milliseconds.For more information about how to install the Network Time Protocol daemon, see your operating system's documentation.

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