Impala StateStore Metrics
Reference information for Impala StateStore 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 StateStore:
-
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, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
cgroup_cpu_system_rate
- Description
- CPU usage of the role's cgroup
- Unit
- seconds per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
cgroup_cpu_user_rate
- Description
- User Space CPU usage of the role's cgroup
- Unit
- seconds per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
cgroup_mem_page_cache
- Description
- Page cache usage of the role's cgroup
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
cgroup_mem_rss
- Description
- Resident memory of the role's cgroup
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
cgroup_mem_swap
- Description
- Swap usage of the role's cgroup
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
cgroup_read_bytes_rate
- Description
- Bytes read from all disks by the role's cgroup
- Unit
- bytes per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
cgroup_read_ios_rate
- Description
- Number of read I/O operations from all disks by the role's cgroup
- Unit
- ios per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
cgroup_write_bytes_rate
- Description
- Bytes written to all disks by the role's cgroup
- Unit
- bytes per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
cgroup_write_ios_rate
- Description
- Number of write I/O operations to all disks by the role's cgroup
- Unit
- ios per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
cpu_system_rate
- Description
- Total System CPU
- Unit
- seconds per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
cpu_user_rate
- Description
- Total CPU user time
- Unit
- seconds per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
events_critical_rate
- Description
- The number of critical events.
- Unit
- events per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
events_important_rate
- Description
- The number of important events.
- Unit
- events per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
events_informational_rate
- Description
- The number of informational events.
- Unit
- events per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
fd_max
- Description
- Maximum number of file descriptors
- Unit
- file descriptors
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
fd_open
- Description
- Open file descriptors.
- Unit
- file descriptors
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
health_bad_rate
- Description
- Percentage of Time with Bad Health
- Unit
- seconds per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
health_concerning_rate
- Description
- Percentage of Time with Concerning Health
- Unit
- seconds per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
health_disabled_rate
- Description
- Percentage of Time with Disabled Health
- Unit
- seconds per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
health_good_rate
- Description
- Percentage of Time with Good Health
- Unit
- seconds per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
health_unknown_rate
- Description
- Percentage of Time with Unknown Health
- Unit
- seconds per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
mem_rss
- Description
- Resident memory used
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
mem_swap
- Description
- Amount of swap memory used by this role's process.
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
mem_virtual
- Description
- Virtual memory used
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
oom_exits_rate
- Description
- 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.
- Unit
- exits per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
read_bytes_rate
- Description
- The number of bytes read from the device
- Unit
- bytes per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
statestore_live_backends
- Description
- The number of active subscribers to this this StateStore.
- Unit
- backends
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
statestore_total_key_size_bytes
- Description
- The sum of the size of all keys for all topics tracked by the StateStore.
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
statestore_total_topic_size_bytes
- Description
- The sum of the size of all keys and all values for all topics tracked by the StateStore.
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
statestore_total_value_size_bytes
- Description
- The sum of the size of all values for all topics tracked by the StateStore.
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
subscriber_client_cache_clients_in_use
- Description
- The total number of active subscriber clients in this StateStore's client cache. These clients are for communication with Impala Daemons.
- Unit
- connections
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
subscriber_client_cache_total_clients
- Description
- The total number of subscriber clients in this StateStore's client cache. These clients are for communication with Impala Daemons.
- Unit
- connections
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
tcmalloc_bytes_in_use
- Description
- Number of bytes used by the application. This will not typically match the memory use reported by the OS, because it does not include TCMalloc overhead or memory fragmentation.
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
tcmalloc_pageheap_free_bytes
- Description
- Number of bytes in free, mapped pages in page heap. These bytes can be used to fulfill allocation requests. They always count towards virtual memory usage, and unless the underlying memory is swapped out by the OS, they also count towards physical memory usage.
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
tcmalloc_pageheap_unmapped_bytes
- Description
- Number of bytes in free, unmapped pages in page heap. These are bytes that have been released back to the OS, possibly by one of the MallocExtension "Release" calls. They can be used to fulfill allocation requests, but typically incur a page fault. They always count towards virtual memory usage, and depending on the OS, typically do not count towards physical memory usage.
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
tcmalloc_physical_bytes_reserved
- Description
- Derived metric computing the amount of physical memory (in bytes) used by the process, including that actually in use and free bytes reserved by tcmalloc. Does not include the tcmalloc metadata.
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
tcmalloc_total_bytes_reserved
- Description
- Bytes of system memory reserved by TCMalloc.
- Unit
- bytes
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
thread_manager_running_threads
- Description
- The number of running threads in this process.
- Unit
- threads
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
thread_manager_threads_created_rate
- Description
- Threads created over the lifetime of the process.
- Unit
- threads per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
thrift_server_state_store_service_connections_in_use
- Description
- The number of active connections to this StateStore's StateStore service.
- Unit
- connections
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
thrift_server_state_store_service_connections_rate
- Description
- The total number of connections made to this StateStore's StateStore service over its lifetime.
- Unit
- connections per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
unexpected_exits_rate
- Description
- The number of times the role's backing process exited unexpectedly.
- Unit
- exits per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
uptime
- Description
- For a host, the amount of time since the host was booted. For a role, the uptime of the backing process.
- Unit
- seconds
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
web_metrics_collection_duration
- Description
- Web Server Responsiveness
- Unit
- ms
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
write_bytes_rate
- Description
- The number of bytes written to the device
- Unit
- bytes per second
- Parents
- cluster, impala, rack
- CDH Version
- CDH 5, CDH 6, CDH 7
