Flume Channel Metrics
In addition to these base metrics, many aggregate metrics are available. If an entity type has parents defined, you can formulate all possible aggregate metrics using the formula base_metric_across_parents.
In addition, metrics for aggregate totals can be formed by adding the prefix total_ to the front of the metric name.
Use the type-ahead feature in the Cloudera Manager chart browser to find the exact aggregate metric name, in case the plural form does not end in "s".
For example, the following metric names may be valid for Flume Channel:
- channel_capacity_across_agents
- total_channel_capacity_across_agents
Some metrics, such as alerts_rate, apply to nearly every metric context. Others only apply to a certain service or role.
For more information about metrics, see Cloudera Manager Metrics and Metric Aggregation.
| Metric Name | Description | Unit | Parents | CDH Version |
|---|---|---|---|---|
| channel_capacity | The maximum number of events that can be queued in the channel at any time. For channel types without a capacity limit, the value will be zero. | events | agent, cluster, flume, flume_channel_tier, rack | CDH 5 |
| channel_fill_percentage | Channel Fill Percentage | percent | agent, cluster, flume, flume_channel_tier, rack | CDH 5 |
| channel_size | The number of events currently queued in the channel. | events | agent, cluster, flume, flume_channel_tier, rack | CDH 5 |
| event_put_attempt_rate | The total number of events that have been attempted to be put into the channel. | events per second | agent, cluster, flume, flume_channel_tier, rack | CDH 5 |
| event_put_success_rate | The total number of events that have successfully been put into the channel. | events per second | agent, cluster, flume, flume_channel_tier, rack | CDH 5 |
| event_take_attempt_rate | The total number of attempts that have been made to take an event from the channel. | events per second | agent, cluster, flume, flume_channel_tier, rack | CDH 5 |
| event_take_success_rate | The total number of events that have successfully been taken from the channel. | events per second | agent, cluster, flume, flume_channel_tier, rack | CDH 5 |