Impala StateStore Metrics

Metric Name Description Unit CDH Version
alerts_rate The number of alerts. events per second CDH 4, CDH 5
cgroup_cpu_system_rate CPU usage of the role's cgroup seconds per second CDH 4, CDH 5
cgroup_cpu_user_rate User Space CPU usage of the role's cgroup seconds per second CDH 4, CDH 5
cgroup_mem_page_cache Page cache usage of the role's cgroup bytes CDH 4, CDH 5
cgroup_mem_rss Resident memory of the role's cgroup bytes CDH 4, CDH 5
cgroup_mem_swap Swap usage of the role's cgroup bytes CDH 4, CDH 5
cgroup_read_bytes_rate Bytes read from all disks by the role's cgroup bytes per second 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 CDH 4, CDH 5
cgroup_write_bytes_rate Bytes written to all disks by the role's cgroup bytes per second 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 CDH 4, CDH 5
cpu_system_rate Total System CPU seconds per second CDH 4, CDH 5
cpu_user_rate Total CPU user time seconds per second CDH 4, CDH 5
events_critical_rate The number of critical events. events per second CDH 4, CDH 5
events_important_rate The number of important events. events per second CDH 4, CDH 5
events_informational_rate The number of informational events. events per second CDH 4, CDH 5
fd_max Maximum number of file descriptors file descriptors CDH 4, CDH 5
fd_open Open file descriptors. file descriptors CDH 4, CDH 5
health_bad_rate Percentage of Time with Bad Health seconds per second CDH 4, CDH 5
health_concerning_rate Percentage of Time with Concerning Health seconds per second CDH 4, CDH 5
health_disabled_rate Percentage of Time with Disabled Health seconds per second CDH 4, CDH 5
health_good_rate Percentage of Time with Good Health seconds per second CDH 4, CDH 5
health_unknown_rate Percentage of Time with Unknown Health seconds per second CDH 4, CDH 5
mem_rss Resident memory used bytes CDH 4, CDH 5
mem_swap Amount of swap memory used by this role's process. bytes CDH 4, CDH 5
mem_virtual Virtual memory used bytes CDH 4, CDH 5
read_bytes_rate The number of bytes read from the device bytes per second CDH 4, CDH 5
statestore_live_backends The number of active subscribers to this this StateStore. backends 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 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 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 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 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 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 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 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 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 CDH 4, CDH 5
tcmalloc_total_bytes_reserved Bytes of system memory reserved by TCMalloc. bytes CDH 4, CDH 5
thread_manager_running_threads The number of running threads in this process. threads CDH 4, CDH 5
thread_manager_threads_created_rate Threads created over the lifetime of the process. threads per second CDH 4, CDH 5
thrift_server_state_store_service_connections_in_use The number of active connections to this StateStore's StateStore service. connections 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 CDH 4, CDH 5
unexpected_exits The number of times the role's backing process exited unexpectedly. unexpected exits CDH 4, CDH 5
web_metrics_collection_duration Web Server Responsiveness ms CDH 4, CDH 5
write_bytes_rate The number of bytes written to the device bytes per second CDH 4, CDH 5