GroupCoordinatorMetrics

GroupCoordinatorMetrics is a set of metrics to measure performance of AbstractCoordinator.

Table 1. GroupCoordinatorMetrics’s Sensors and Metrics
Sensor Name	Metric Name	Description
`heartbeat-latency`	`heartbeat-rate`	The number of heartbeats per second
`heartbeat-latency`	`heartbeat-response-time-max`	The max time taken to receive a response to a heartbeat request
`heartbeat-latency`	`heartbeat-total`	The total number of heartbeats
`join-latency`	`join-rate`	The number of group joins per second
`join-latency`	`join-time-avg`	The average time taken for a group rejoin
`join-latency`	`join-time-max`	The max time taken for a group rejoin
`join-latency`	`join-total`	The total number of group joins
	`last-heartbeat-seconds-ago`	The number of seconds since the last coordinator heartbeat was sent
`sync-latency`	`sync-rate`	The number of group syncs per second
`sync-latency`	`sync-time-avg`	The average time taken for a group sync
`sync-latency`	`sync-time-max`	The max time taken for a group sync
`sync-latency`	`sync-total`	The total number of group syncs

GroupCoordinatorMetrics is registered in consumer-coordinator-metrics group.

Figure 1. GroupCoordinatorMetrics in jconsole

GroupCoordinatorMetrics is created exclusively for AbstractCoordinator.

GroupCoordinatorMetrics takes the following to be created:

GroupCoordinatorMetrics uses the prefix followed by -coordinator-metrics for the metric group name (e.g. consumer-coordinator-metrics).

[prefix]-coordinator-metrics

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