HDFS Metrics
Reference information for HDFS 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 HDFS:
-
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.
alerts_rate
- Description
- The number of alerts.
- Unit
- events per second
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
block_capacity
- Description
- The block capacity of the NameNode
- Unit
- blocks
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
blocks_total
- Description
- Blocks total
- Unit
- blocks
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
blocks_with_corrupt_replicas
- Description
- Blocks with corrupt replicas
- Unit
- blocks
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
canary_duration
- Description
- Duration of the last or currently running canary job
- Unit
- ms
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
cm_time_since_last_fsimage_fetch
- Description
- Time since last FsImage was fetched by Cloudera Reports Manager
- Unit
- seconds
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
cm_time_since_last_fsimage_index
- Description
- Time since last FsImage was indexed By Cloudera Reports Manager
- Unit
- seconds
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
dfs_capacity
- Description
- Total configured HDFS storage capacity
- Unit
- bytes
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
dfs_capacity_used
- Description
- Storage space used by HDFS files
- Unit
- bytes
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
dfs_capacity_used_non_hdfs
- Description
- Storage space used by non-HDFS files
- Unit
- bytes
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
events_critical_rate
- Description
- The number of critical events.
- Unit
- events per second
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
events_important_rate
- Description
- The number of important events.
- Unit
- events per second
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
events_informational_rate
- Description
- The number of informational events.
- Unit
- events per second
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
excess_blocks
- Description
- The total number of excess blocks
- Unit
- blocks
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
expired_heartbeats
- Description
- The number of expired heartbeats
- Unit
- heartbeats
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
files_total
- Description
- The number of files and directories in the HDFS
- Unit
- files
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
health_bad_rate
- Description
- Percentage of Time with Bad Health
- Unit
- seconds per second
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
health_concerning_rate
- Description
- Percentage of Time with Concerning Health
- Unit
- seconds per second
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
health_disabled_rate
- Description
- Percentage of Time with Disabled Health
- Unit
- seconds per second
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
health_good_rate
- Description
- Percentage of Time with Good Health
- Unit
- seconds per second
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
health_unknown_rate
- Description
- Percentage of Time with Unknown Health
- Unit
- seconds per second
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
missing_blocks
- Description
- Missing blocks
- Unit
- blocks
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
pending_deletion_blocks
- Description
- The number of replicas pending deletion.
- Unit
- replicas
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
pending_replication_blocks
- Description
- The number of blocks with replication pending
- Unit
- blocks
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
scheduled_replication_blocks
- Description
- The number of blocks with replication currently scheduled
- Unit
- blocks
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
under_replicated_blocks
- Description
- Under-replicated blocks
- Unit
- blocks
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
xceivers
- Description
- Transceivers
- Unit
- transceivers
- Parents
- cluster
- CDH Version
- CDH 5, CDH 6, CDH 7
