New Features in Apache Cassandra 4.0

This section covers the new features in Apache Cassandra 4.0.

• Support for Java 11
  • Support Matrix
  • Using Java 8 to Build
  • Using Java 11 to Build
  • Common Issues
• Virtual Tables
  • Definition
  • Objective
  • How are Virtual Tables different from regular tables?
  • Virtual Keyspaces
  • Virtual Table Limitations
  • Listing and Describing Virtual Tables
  • The system_virtual_schema keyspace
• Audit Logging
  • What does Audit Logging Log?
  • What Audit Logging does not Log?
  • Audit Logging is Flexible and Configurable
  • Configuring Audit Logging
  • Using Nodetool to Enable Audit Logging
  • Viewing the Audit Logs
  • An Audit Logging Demo
  • Diagnostic events for user audit logging
• Full Query Logging (FQL)
  • Query information logged
  • Logging information logged
  • Logging sequence
  • Using FQL
  • Configuring FQL in cassandra.yaml
  • Enabling FQL
  • Disabling or resetting FQL
  • fqltool
  • Example
• Improved Internode Messaging
  • Optimized Internode Messaging Protocol
  • NIO Messaging
  • Resource limits on Queued Messages
  • Virtual Tables for Messaging Metrics
  • Hint Messaging
  • Internode Application Timeout
  • Paxos prepare and propose stage for local requests optimized
  • Quality Assurance
  • Added a Message size limit
  • Recover from unknown table when deserializing internode messages
• Improved Streaming
  • Streaming based on Netty
  • Zero Copy Streaming
  • Repair Streaming Preview
  • Parallelizing of Streaming of Keyspaces
  • Unique nodes for Streaming in Multi-DC deployment
  • Stream Operation Types
  • Disallow Decommission when number of Replicas will drop below configured RF
• Transient Replication
  • Objective
  • Enabling Transient Replication
  • Cheap Quorums
  • Speculative Write Option
  • Pending Ranges and Transient Replicas
  • Read Repair and Transient Replicas
  • Transitioning between Full Replicas and Transient Replicas
  • Transient Replication supports EACH_QUORUM