Partitioning

Partitioning metrics are under clnt/<server_label>/partitioner/ scope given insights into how client stack manages partition nodes.

HashingPartitioningStrategy <<<<<<<<<<<<<<<<<<<<<<<<<<<

redistributes A counter of the times the nodes on the hash ring have been redistributed.

joins A counter of the times a new node joins the hash ring, indicating a new partition joins the cluster.

leaves A counter of the times a node leaves the hash ring, indicating service discovery detects a node leave.

ejections A counter of the times an unhealthy node marked by ConsistentHashingFailureAccrual has been removed from the hash ring. leaves and joins indicate service discovery updates, while ejections and revivals indicate the code health status.

revivals A counter of the times an ejected node has been marked as live on the hash ring. leaves and joins indicate service discovery updates, while ejections and revivals indicate node health status.

live_nodes A gauge of the current total number of healthy partitions.

dead_nodes A gauge of the current total number of unhealthy partitions marked by ConsistentHashingFailureAccrual.

CustomPartitioningStrategy (ThriftMux) <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

nodes A gauge of the current total number of logical partitions.