This is the documentation for Cloudera Enterprise 5.8.x. Documentation for other versions is available at Cloudera Documentation.

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.

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, impala, rack CDH 4, CDH 5
cgroup_cpu_system_rate CPU usage of the role's cgroup seconds per second cluster, impala, rack CDH 4, CDH 5
cgroup_cpu_user_rate User Space CPU usage of the role's cgroup seconds per second cluster, impala, rack CDH 4, CDH 5
cgroup_mem_page_cache Page cache usage of the role's cgroup bytes cluster, impala, rack CDH 4, CDH 5
cgroup_mem_rss Resident memory of the role's cgroup bytes cluster, impala, rack CDH 4, CDH 5
cgroup_mem_swap Swap usage of the role's cgroup bytes cluster, impala, rack CDH 4, CDH 5
cgroup_read_bytes_rate Bytes read from all disks by the role's cgroup bytes per second cluster, impala, rack CDH 4, CDH 5
cgroup_read_ios_rate Number of read I/O operations from all disks by the role's cgroup ios per second cluster, impala, rack CDH 4, CDH 5
cgroup_write_bytes_rate Bytes written to all disks by the role's cgroup bytes per second cluster, impala, rack CDH 4, CDH 5
cgroup_write_ios_rate Number of write I/O operations to all disks by the role's cgroup ios per second cluster, impala, rack CDH 4, CDH 5
cpu_system_rate Total System CPU seconds per second cluster, impala, rack CDH 4, CDH 5
cpu_user_rate Total CPU user time seconds per second cluster, impala, rack CDH 4, CDH 5
events_critical_rate The number of critical events. events per second cluster, impala, rack CDH 4, CDH 5
events_important_rate The number of important events. events per second cluster, impala, rack CDH 4, CDH 5
events_informational_rate The number of informational events. events per second cluster, impala, rack CDH 4, CDH 5
fd_max Maximum number of file descriptors file descriptors cluster, impala, rack CDH 4, CDH 5
fd_open Open file descriptors. file descriptors cluster, impala, rack CDH 4, CDH 5
health_bad_rate Percentage of Time with Bad Health seconds per second cluster, impala, rack CDH 4, CDH 5
health_concerning_rate Percentage of Time with Concerning Health seconds per second cluster, impala, rack CDH 4, CDH 5
health_disabled_rate Percentage of Time with Disabled Health seconds per second cluster, impala, rack CDH 4, CDH 5
health_good_rate Percentage of Time with Good Health seconds per second cluster, impala, rack CDH 4, CDH 5
health_unknown_rate Percentage of Time with Unknown Health seconds per second cluster, impala, rack CDH 4, CDH 5
mem_rss Resident memory used bytes cluster, impala, rack CDH 4, CDH 5
mem_swap Amount of swap memory used by this role's process. bytes cluster, impala, rack CDH 4, CDH 5
mem_virtual Virtual memory used bytes cluster, impala, rack CDH 4, CDH 5
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, impala, rack CDH 4, CDH 5
read_bytes_rate The number of bytes read from the device bytes per second cluster, impala, rack CDH 4, CDH 5
statestore_live_backends The number of active subscribers to this this StateStore. backends cluster, impala, rack CDH 4, CDH 5
statestore_total_key_size_bytes The sum of the size of all keys for all topics tracked by the StateStore. bytes cluster, impala, rack CDH 4, CDH 5
statestore_total_topic_size_bytes The sum of the size of all keys and all values for all topics tracked by the StateStore. bytes cluster, impala, rack CDH 4, CDH 5
statestore_total_value_size_bytes The sum of the size of all values for all topics tracked by the StateStore. bytes cluster, impala, rack CDH 4, CDH 5
subscriber_client_cache_clients_in_use The total number of active subscriber clients in this StateStore's client cache. These clients are for communication with Impala Daemons. connections cluster, impala, rack CDH 4, CDH 5
subscriber_client_cache_total_clients The total number of subscriber clients in this StateStore's client cache. These clients are for communication with Impala Daemons. connections cluster, impala, rack CDH 4, CDH 5
tcmalloc_bytes_in_use 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. bytes cluster, impala, rack CDH 4, CDH 5
tcmalloc_pageheap_free_bytes 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. bytes cluster, impala, rack CDH 4, CDH 5
tcmalloc_pageheap_unmapped_bytes 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. bytes cluster, impala, rack CDH 4, CDH 5
tcmalloc_physical_bytes_reserved 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. bytes cluster, impala, rack CDH 4, CDH 5
tcmalloc_total_bytes_reserved Bytes of system memory reserved by TCMalloc. bytes cluster, impala, rack CDH 4, CDH 5
thread_manager_running_threads The number of running threads in this process. threads cluster, impala, rack CDH 4, CDH 5
thread_manager_threads_created_rate Threads created over the lifetime of the process. threads per second cluster, impala, rack CDH 4, CDH 5
thrift_server_state_store_service_connections_in_use The number of active connections to this StateStore's StateStore service. connections cluster, impala, rack CDH 4, CDH 5
thrift_server_state_store_service_connections_rate The total number of connections made to this StateStore's StateStore service over its lifetime. connections per second cluster, impala, rack CDH 4, CDH 5
unexpected_exits_rate The number of times the role's backing process exited unexpectedly. exits per second cluster, impala, rack CDH 4, CDH 5
uptime For a host, the amount of time since the host was booted. For a role, the uptime of the backing process. seconds cluster, impala, rack CDH 4, CDH 5
web_metrics_collection_duration Web Server Responsiveness ms cluster, impala, rack CDH 4, CDH 5
write_bytes_rate The number of bytes written to the device bytes per second cluster, impala, rack CDH 4, CDH 5
Page generated July 8, 2016.