Cluster 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".
| Metric Name | Description | Unit | Parents | CDH Version |
|---|---|---|---|---|
| apps_ingested_rate | YARN applications ingested by the Service Monitor | Applications per second | CDH 4, CDH 5 | |
| impala_query_admission_wait_rate | The time from submission for admission to its completion. Called 'admission_wait' in searches. | ms per second | 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_memory_accrual_rate | The total accrued memory usage by the query. This is computed by multiplying the average aggregate memory usage of the query by the query's duration. Called 'memory_accrual' in searches. | byte seconds per second | CDH 4, CDH 5 | |
| impala_query_memory_spilled_rate | Amount of memory spilled to disk. Called 'memory_spilled' 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 | CDH 4, CDH 5 | |
| queries_oom_rate | Impala queries for which memory consumption exceeded what was allowed | queries per second | CDH 4, CDH 5 | |
| queries_rejected_rate | Impala queries rejected from admission, commonly due to the queue being full or insufficient memory | queries per second | CDH 4, CDH 5 | |
| queries_spilled_memory_rate | Impala queries that spilled to disk | queries per second | CDH 4, CDH 5 | |
| queries_successful_rate | Impala queries that ran to completion successfully | queries per second | CDH 4, CDH 5 | |
| queries_timed_out_rate | Impala queries that timed out waiting in queue during admission | queries per second | CDH 4, CDH 5 | |
| yarn_application_application_duration_rate | How long YARN took to execute this application. Called 'application_duration' in searches. | ms per second | CDH 4, CDH 5 | |
| yarn_application_cm_cpu_milliseconds_rate | yarn.analysis.cm_cpu_milliseconds.description | ms per second | CDH 4, CDH 5 | |
| yarn_application_cpu_milliseconds_rate | CPU time. Called 'cpu_milliseconds' in searches. | ms per second | CDH 4, CDH 5 | |
| yarn_application_file_bytes_read_rate | File bytes read. Called 'file_bytes_read' in searches. | bytes per second | CDH 4, CDH 5 | |
| yarn_application_file_bytes_written_rate | File bytes written. Called 'file_bytes_written' in searches. | bytes per second | CDH 4, CDH 5 | |
| yarn_application_hdfs_bytes_read_rate | HDFS bytes read. Called 'hdfs_bytes_read' in searches. | bytes per second | CDH 4, CDH 5 | |
| yarn_application_hdfs_bytes_written_rate | HDFS bytes written. Called 'hdfs_bytes_written' in searches. | bytes per second | CDH 4, CDH 5 | |
| yarn_application_maps_rate | The number of Map tasks in this MapReduce job. Called 'maps_total' in searches. | items per second | CDH 4, CDH 5 | |
| yarn_application_mb_millis_maps_rate | Map memory allocation. Called 'mb_millis_maps' in searches. | items per second | CDH 4, CDH 5 | |
| yarn_application_mb_millis_reduces_rate | Reduce memory allocation. Called 'mb_millis_reduces' in searches. | items per second | CDH 4, CDH 5 | |
| yarn_application_reduces_rate | The number of reduce tasks in this MapReduce job. Called 'reduces_total' in searches. | items per second | CDH 4, CDH 5 | |
| yarn_application_vcores_millis_maps_rate | Map CPU allocation. Called 'vcores_millis_maps' in searches. | items per second | CDH 4, CDH 5 | |
| yarn_application_vcores_millis_reduces_rate | Reduce CPU allocation. Called 'vcores_millis_reduces' in searches. | items per second | CDH 4, CDH 5 |