DataNode 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 DataNode:
-
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.
| Metric Name | Description | Unit | Parents | Version |
|---|---|---|---|---|
| alerts_rate | The number of alerts. | events per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| block_checksum_op_avg_time | Block Checksum Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| block_checksum_op_rate | Block Checksum Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| block_reports_avg_time | Block Reports Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| block_reports_rate | Block Reports Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| block_verification_failures_rate | Block Verification Failures | failures per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| blocks_cached_rate | The total number of HDFS blocks cached over the lifetime of the process. | blocks per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| blocks_get_local_path_info_rate | Blocks Get Local Path Info | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| blocks_read_rate | Blocks Read | blocks per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| blocks_removed_rate | Blocks Removed | blocks per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| blocks_replicated_rate | Blocks Replicated | blocks per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| blocks_total | Blocks total | blocks | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| blocks_uncached_rate | The total number of HDFS blocks uncached over the lifetime of the process. | blocks per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| blocks_verified_rate | Blocks Verified | blocks per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| blocks_written_rate | Blocks Written | blocks per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| bytes_read_rate | Number of bytes read | bytes per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| bytes_written_rate | Bytes Written | bytes per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cache_capacity | The capacity of the HDFS cache on this DataNode. | bytes | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cache_reports_avg_time | The average time to generate cache reports on the DataNode. | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cache_reports_rate | The total number of generate cache reports operations on the DataNode. | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cache_used | The total cache used. | bytes | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cgroup_cpu_system_rate | CPU usage of the role's cgroup | seconds per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cgroup_cpu_user_rate | User Space CPU usage of the role's cgroup | seconds per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cgroup_mem_page_cache | Page cache usage of the role's cgroup | bytes | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cgroup_mem_rss | Resident memory of the role's cgroup | bytes | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cgroup_mem_swap | Swap usage of the role's cgroup | bytes | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cgroup_read_bytes_rate | Bytes read from all disks by the role's cgroup | bytes per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cgroup_read_ios_rate | Number of read I/O operations from all disks by the role's cgroup | ios per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cgroup_write_bytes_rate | Bytes written to all disks by the role's cgroup | bytes per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cgroup_write_ios_rate | Number of write I/O operations to all disks by the role's cgroup | ios per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| copy_block_op_avg_time | Copy Block Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| copy_block_op_rate | Copy Block Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cpu_system_rate | Total System CPU | seconds per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| cpu_user_rate | Total CPU user time | seconds per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| datanode_namenode_connections_bad | NameNode connections in a bad state | connections | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| datanode_namenode_connections_good | NameNode connections in a good state | connections | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| datanode_namenode_connections_unknown | NameNode connections in a unknown state | connections | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| delete_block_pool_avg_time | Delete Block Pool Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| delete_block_pool_rate | Delete Block Pool Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| dfs_capacity | Total configured HDFS storage capacity | bytes | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| dfs_capacity_used | Storage space used by HDFS files | bytes | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| dfs_capacity_used_non_hdfs | Storage space used by non-HDFS files | bytes | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| events_critical_rate | The number of critical events. | events per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| events_important_rate | The number of important events. | events per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| events_informational_rate | The number of informational events. | events per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| fd_max | Maximum number of file descriptors | file descriptors | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| fd_open | Open file descriptors. | file descriptors | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| flush_nanos_avg_time | Average Disk Flush Time | nanos | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| flush_nanos_rate | Disk Flushes | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| fsync_nanos_avg_time | Average Disk Fsync Time | nanos | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| fsync_nanos_rate | Disk Fsyncs | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| fsync_rate | Fsync Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| gc_count_concurrent_mark_sweep_rate | The number of garbage collections by the Concurrent Mark Sweep Collector. | garbage collections per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| gc_count_par_new_rate | The number of garbage collections by the Parallel Collector. | garbage collections per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| gc_time_ms_concurrent_mark_sweep_rate | The total time spent in garbage collections by the Concurrent Mark Sweep Collector. | ms per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| gc_time_ms_par_new_rate | The total time spent in garbage collections by the Parallel Collector. | ms per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| get_block_local_path_info_avg_time | Get Block Local Path Info Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| get_block_local_path_info_rate | Get Block Local Path Info Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| get_hadoop_groups_avg_time | Average Time to get Hadoop group for the user | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| get_hadoop_groups_rate | Get Hadoop User Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| get_hdfs_blocks_metadata_avg_time | Get HDFS Blocks Metadata Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| get_hdfs_blocks_metadata_rate | Get HDFS Blocks Metadata Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| get_replica_visible_length_avg_time | Get Replica Visible Length Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| get_replica_visible_length_rate | Get Replica Visible Length Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| health_bad_rate | Percentage of Time with Bad Health | seconds per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| health_concerning_rate | Percentage of Time with Concerning Health | seconds per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| health_disabled_rate | Percentage of Time with Disabled Health | seconds per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| health_good_rate | Percentage of Time with Good Health | seconds per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| health_unknown_rate | Percentage of Time with Unknown Health | seconds per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| heartbeats_avg_time | Heartbeat Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| heartbeats_rate | Heartbeats | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| init_replica_recovery_avg_time | Init Replica Recovery Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| init_replica_recovery_rate | Init Replica Recovery Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_blocked_threads | Blocked threads | threads | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_gc_rate | Number of garbage collections | garbage collections per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_gc_time_ms_rate | Total time spent garbage collecting. | ms per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_heap_committed_mb | Total amount of committed heap memory. | MB | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_heap_used_mb | Total amount of used heap memory. | MB | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_max_memory_mb | Maximum allowed memory. | MB | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_new_threads | New threads | threads | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_non_heap_committed_mb | Total amount of committed non-heap memory. | MB | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_non_heap_used_mb | Total amount of used non-heap memory. | MB | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_pauses_info_threshold_exceeded_rate | Number of pauses detected over the info threshold. The pause monitor thread sleeps for 500 ms and calculates the extra time it spent paused on top of the sleep time. If the extra sleep time exceeds 1 second, it treats it as one pause above the info threshold. | pauses per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_pauses_warn_threshold_exceeded_rate | Number of pauses detected over the warn threshold. The pause monitor thread sleeps for 500 ms and calculates the extra time it spent paused on top of the sleep time. If the extra sleep time exceeds 10 seconds, it treats it as one pause above the warn threshold. | pauses per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_runnable_threads | Runnable threads | threads | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_terminated_threads | Terminated threads | threads | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_timed_waiting_threads | Timed waiting threads | threads | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_total_threads | Total threads | threads | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| jvm_waiting_threads | Waiting threads | threads | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| log_error_rate | Logged Errors | messages per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| log_fatal_rate | Logged Fatals | messages per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| log_info_rate | Logged Infos | messages per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| log_warn_rate | Logged Warnings | messages per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| login_failure_avg_time | Average Failed Login Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| login_failure_rate | Login Failures | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| login_success_avg_time | Average Successful Login Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| login_success_rate | Login Successes | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| mem_rss | Resident memory used | bytes | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| mem_swap | Amount of swap memory used by this role's process. | bytes | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| mem_virtual | Virtual memory used | bytes | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| metrics_dropped_pub_all | Dropped Metrics Updates By All Sinks | updates | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| metrics_num_active_sinks | Active Metrics Sinks Count | sinks | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| metrics_num_active_sources | Active Metrics Sources Count | sources | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| metrics_num_all_sinks | All Metrics Sinks Count | sinks | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| metrics_num_all_sources | All Metrics Sources Count | sources | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| metrics_publish_avg_time | Metrics Publish Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| metrics_publish_rate | Metrics Publish Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| metrics_snapshot_avg_time | Metrics Snapshot Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| metrics_snapshot_rate | Metrics Snapshot Average Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| num_blocks_failed_to_cache_rate | The total number of blocks the DataNode failed to cache. | blocks per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| num_blocks_failed_to_uncache_rate | The total number of blocks the DataNode failed to uncache. | blocks per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| oom_exits_rate | The number of times the role's backing process was killed due to an OutOfMemory error. This counter is only incremented if the Cloudera Manager "Kill When Out of Memory" option is enabled. | exits per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| packet_ack_round_trip_time_nanos_avg_time | Packet Ack Round Trip Average Time | nanos | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| packet_ack_round_trip_time_nanos_rate | Packet Ack Round Trip Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| pause_time_rate | Total time spent paused. This is the total extra time the pause monitor thread spent sleeping on top of the requested 500 ms. | ms per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| pauses_rate | Number of pauses detected. The pause monitor thread sleeps for 500 ms and calculates the extra time it spent paused on top of the sleep time. If the extra sleep time exceeds 1 second, it treats it as one pause. | pauses per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| read_block_op_avg_time | Read Block Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| read_block_op_rate | Read Block Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| read_bytes_rate | The number of bytes read from the device | bytes per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| reads_from_local_client_rate | Reads From Local Clients | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| reads_from_remote_client_rate | Reads From Remote Clients | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| refresh_namenodes_avg_time | Refresh NameNodes Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| refresh_namenodes_rate | Refresh NameNodes Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| replace_block_op_avg_time | Replace Block Operation Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| replace_block_op_rate | Replace Block Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| rpc_authentication_failures_rate | RPC Authentication Failures | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| rpc_authentication_successes_rate | RPC Authentication Successes | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| rpc_authorization_failures_rate | RPC Authorization Failures | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| rpc_authorization_successes_rate | RPC Authorization Successes | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| rpc_call_queue_length | RPC Call Queue Length | items | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| rpc_num_open_connections | Open RPC Connections | connections | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| rpc_processing_time_avg_time | Average RPC Processing Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| rpc_processing_time_rate | RPCs Processed | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| rpc_queue_time_avg_time | Average RPC Queue Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| rpc_queue_time_rate | RPCs Queued | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| rpc_received_bytes_rate | RPC Received Bytes | bytes per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| rpc_sent_bytes_rate | RPC Sent Bytes | bytes per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| send_data_packet_blocked_on_network_nanos_avg_time | Send Data Packet Blocked On Network Average Time | nanos | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| send_data_packet_blocked_on_network_nanos_rate | Send Data Packet Blocked On Network Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| send_data_packet_transfer_nanos_avg_time | Send Data Packet Transfer Average Time | nanos | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| send_data_packet_transfer_nanos_rate | Send Data Packet Transfer Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| unexpected_exits_rate | The number of times the role's backing process exited unexpectedly. | exits per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| update_replica_under_recovery_avg_time | Update Replica Under Recovery Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| update_replica_under_recovery_rate | Update Replica Under Recovery Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| uptime | For a host, the amount of time since the host was booted. For a role, the uptime of the backing process. | seconds | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| volume_failures | Volume failures | volumes | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| web_metrics_collection_duration | Web Server Responsiveness | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| write_block_op_avg_time | Write Block Average Time | ms | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| write_block_op_rate | Write Block Operations | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| write_bytes_rate | The number of bytes written to the device | bytes per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| writes_from_local_client_rate | Writes From Local Clients | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| writes_from_remote_client_rate | Writes From Remote Clients | operations per second | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| xceivers | Transceivers | transceivers | cluster, hdfs, rack | CDH 5, CDH 6, Cloudera Runtime 7 |
| ec_decoding_time_rate | Time spent in decoding during erasure coding | nanos per second | cluster, hdfs, rack | CDH 6, Cloudera Runtime 7 |
| ec_failed_reconstruction_tasks_rate | Number of failed reconstruction tasks during erasure coding | tasks per second | cluster, hdfs, rack | CDH 6, Cloudera Runtime 7 |
| ec_reconstruction_bytes_read_rate | Number of bytes read during erasure coding reconstruction | bytes per second | cluster, hdfs, rack | CDH 6, Cloudera Runtime 7 |
| ec_reconstruction_bytes_written_rate | Number of bytes written during erasure coding reconstruction | bytes per second | cluster, hdfs, rack | CDH 6, Cloudera Runtime 7 |
| ec_reconstruction_decoding_time_rate | Decoding time spent during erasure coding reconstruction | ms per second | cluster, hdfs, rack | CDH 6, Cloudera Runtime 7 |
| ec_reconstruction_read_time_rate | Read time spent during erasure coding reconstruction | ms per second | cluster, hdfs, rack | CDH 6, Cloudera Runtime 7 |
| ec_reconstruction_remote_bytes_read_rate | Number of remote bytes read during erasure coding reconstruction | bytes per second | cluster, hdfs, rack | CDH 6, Cloudera Runtime 7 |
| ec_reconstruction_tasks_rate | Number of reconstruction tasks during erasure coding | tasks per second | cluster, hdfs, rack | CDH 6, Cloudera Runtime 7 |
| ec_reconstruction_write_time_rate | Write time spent during erasure coding reconstruction | ms per second | cluster, hdfs, rack | CDH 6, Cloudera Runtime 7 |
