intel/intel-optimized-cassandra repository overview

⁠Introduction

Apache Cassandra is an open source NoSQL distributed database trusted by thousands of companies for scalability and high availability without compromising performance. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure make it the perfect platform for mission-critical data.

• JDK14 stands for openjdk14 and Cassandra 4.0.6.

⁠Environment Variables

Parameters for workload configuration:

• SERVER_POD_LEVEL - Kubernetes Pods QoS class level for Server Pods. Guaranteed|Burstable|BestEffort. Default value is Burstable.
• SERVER_POD_MEMORY - Additional parameter for SERVER_POD_LEVEL. Only used in Guaranteed level. Default value is 30GB.
• SERVER_POD_CPU - Additional parameter for SERVER_POD_LEVEL. Default value is 1. Which represents 1 CPU core.
• INSTANCE_NUM - The nubmer of Cassandra server and client instances to run concurrently.
• CASSANDRA_NUMACTL_ENABLE - Numactl for Cassandra server. Cassandra server instances will bond to CPU sockets evenly. Default is 'true'
• JVM_HEAP_SIZE - JVM configuration for '-Xms' and '-Xmx'. '-Xms' is min heap size and '-Xmx' is max heap size, values set to same to avoid stop-the-world GC pauses during resize. If the value are larger than free memory size, it will be adjust to '80% * free memory size'.
• JVM_GC_TYPE - JVM garbage collection type. Suggestion is to use '+UseG1GC'. Default value is '+UseG1GC'
• HOST_NETWORK_ENABLE - Using host network or not for Cassandra pod. Default vaule is true
• NETWORK_RPS_TUNE_ENABLE - RPS tuning flag on cloud, Default value is false. If set to true, RPS used all cores.
• JDK_VERSION - JDK14 stands for openjdk14 and Cassandra 4.0.6.
• CASSANDRA_FILL_DATA - Boolean variable(true | false). If set to 'true' means generating data in advance and then do the performance testing. If set to 'false' means do the performance testing directly.
• CASSANDRA_DISK_MOUNT - Boolean variable(true | false). Default value is 'false'. If set to 'true', it will mount to Cassandra server pod '/mnt/data[0...INSTANCE_NUM]'. The purpose is to set each Cassandra server instance has its own independent disk.
• EPHEMERAL_STORAGE_SIZE - It is kubernetes paramaters 'ephemeral-storage'. Requesting disk space for performance test. Default value is 250Gi