Impala 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 Impala:

  • alerts_rate_across_clusters
  • total_alerts_rate_across_clusters

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
alerts_rate The number of alerts. events per second cluster CDH 4, CDH 5
events_critical_rate The number of critical events. events per second cluster CDH 4, CDH 5
events_important_rate The number of important events. events per second cluster CDH 4, CDH 5
events_informational_rate The number of informational events. events per second cluster CDH 4, CDH 5
health_bad_rate Percentage of Time with Bad Health seconds per second cluster CDH 4, CDH 5
health_concerning_rate Percentage of Time with Concerning Health seconds per second cluster CDH 4, CDH 5
health_disabled_rate Percentage of Time with Disabled Health seconds per second cluster CDH 4, CDH 5
health_good_rate Percentage of Time with Good Health seconds per second cluster CDH 4, CDH 5
health_unknown_rate Percentage of Time with Unknown Health seconds per second cluster CDH 4, CDH 5
impala_query_bytes_streamed_rate The total number of bytes sent between Impala Daemons while processing this query. Called 'bytes_streamed' in searches. bytes per second   CDH 4, CDH 5
impala_query_cm_cpu_milliseconds_rate impala.analysis.cm_cpu_milliseconds.description ms per second   CDH 4, CDH 5
impala_query_hdfs_bytes_read_rate The total number of bytes read from HDFS by this query. Called 'hdfs_bytes_read' in searches. bytes per second   CDH 4, CDH 5
impala_query_hdfs_bytes_written_rate The total number of bytes written to HDFS by this query. Called 'hdfs_bytes_written' in searches. bytes per second   CDH 4, CDH 5
impala_query_query_duration_rate The duration of the query in milliseconds. Called 'query_duration' in searches. ms per second   CDH 4, CDH 5
impala_query_thread_cpu_time_rate The sum of the CPU time used by all threads of the query. Called 'thread_cpu_time' in searches. ms per second   CDH 4, CDH 5
queries_ingested_rate Impala queries ingested by the Service Monitor queries per second cluster CDH 4, CDH 5