Metrics

1. statestore
2. memory
3. tcmalloc

statestore

Name	Value	Description
rpc-method.statestore.StatestoreService.RegisterSubscriber.read_duration	Count: 5, sum: 42.000us, min / max: 6.000us / 17.000us, 25th %-ile: 6.000us, 50th %-ile: 6.000us, 75th %-ile: 7.000us, 90th %-ile: 17.000us, 95th %-ile: 17.000us, 99.9th %-ile: 17.000us
rpc-method.statestore.StatestoreService.GetProtocolVersion.read_duration	Count: 5, sum: 25.000us, min / max: 2.000us / 15.000us, 25th %-ile: 2.000us, 50th %-ile: 3.000us, 75th %-ile: 3.000us, 90th %-ile: 15.000us, 95th %-ile: 15.000us, 99.9th %-ile: 15.000us
rpc-method.statestore.StatestoreService.GetProtocolVersion.call_duration	Count: 5, sum: 438.000us, min / max: 54.000us / 143.000us, 25th %-ile: 54.000us, 50th %-ile: 70.000us, 75th %-ile: 109.000us, 90th %-ile: 143.000us, 95th %-ile: 143.000us, 99.9th %-ile: 143.000us
impala.thrift-server.StatestoreService.timedout-cnxn-requests	0	The number of connection requests to the Statestore Service that have been timed out waiting to be setup.
impala.thrift-server.StatestoreService.total-connections	4	The total number of connections made to this StateStore's StateStore service over its lifetime.
subscriber-update-catalogd.client-cache.clients-in-use	0	The number of clients in use by the Statestore update catalogd client cache.
statestore.total-key-size-bytes	2216	The sum of the size of all keys for all topics tracked by the StateStore.
rpc-method.statestore.StatestoreService.RegisterSubscriber.write_duration	Count: 5, sum: 286.000us, min / max: 35.000us / 79.000us, 25th %-ile: 35.000us, 50th %-ile: 57.000us, 75th %-ile: 74.000us, 90th %-ile: 79.000us, 95th %-ile: 79.000us, 99.9th %-ile: 79.000us
statestore.live-backends	3	The number of registered Statestore subscribers.
rpc-method.statestore.StatestoreService.GetProtocolVersion.write_duration	Count: 5, sum: 209.000us, min / max: 20.000us / 72.000us, 25th %-ile: 20.000us, 50th %-ile: 25.000us, 75th %-ile: 71.000us, 90th %-ile: 72.000us, 95th %-ile: 72.000us, 99.9th %-ile: 72.000us
impala.webserver.total-oauth-token-auth-failure	0	The number of HTTP connection requests to this daemon's webserver that provided an invalid OAuth token.
statestore.priority-topic-update-durations	Last (of 318225): 0.000380826. Min: 0, max: 0.227118, avg: 0.000340127	The time (sec) spent sending priority topic update RPCs. Includes subscriber-side processing time and network transmission time.
statestore.active-status	true	Current active status of this Statestore daemon.
process-start-time	2026-09-10 08:09:07.408653000	The local start time of the process
thread-manager.running-threads	38	The number of running threads in this process.
subscriber-update-catalogd.client-cache.total-clients	1	The total number of clients in the Statestore update catalogd client cache.
statestore.subscribers-received-heartbeat	3	The number of Statestore subscribers received heartbeat in last monitoring interval.
subscriber-heartbeat.client-cache.total-clients	3	The total number of clients in the Statestore heartbeat client cache.
statestore.service-started	true	Statestore service is started and ready to accept connections.
statestore.version	statestored version 4.5.0-RELEASE RELEASE (build 4f36a5ab0c654183423284a5aec514f34f96d591)	The full version string of the Statestore Server.
kudu-client.version	kudu e742f86f6d (rev e742f86f6d8e687dd02d9891f33e068477163016-dirty)	A version string identifying the Kudu client
statestore.num-failed-update-statestored-role-rpc	0	The number of failed RPCs for updating role of statestored.
thread-manager.total-threads-created	39	Threads created over the lifetime of the process.
statestore.total-value-size-bytes	5734	The sum of the size of all values for all topics tracked by the StateStore.
statestore.num-clear-topic-entries-requests	1	The number of requests for clearing topic entries from catalogd.
statestore.total-topic-size-bytes	7950	The sum of the size of all keys and all values for all topics tracked by the StateStore.
impala.thrift-server.StatestoreService.connections-in-use	3	The number of active connections to this StateStore's service.
statestore.active-catalogd-address	catalog-0.catalog-sv:26000	The address of the Active Catalog Server daemon.
impala.webserver.total-oauth-token-auth-success	0	The number of HTTP connection requests to this daemon's webserver that were successfully authenticated using OAuth token.
statestore.num-successful-update-catalogd-rpc	2	The number of successful RPCs for updating catalogd.
statestore.topic-update-durations	Last (of 23894): 0.00029319. Min: 0, max: 0.392208, avg: 0.000397659	The time (sec) spent sending non-priority topic update RPCs. Includes subscriber-side processing time and network transmission time.
impala.thrift-server.StatestoreService.connection-setup-time	Count: 4, sum: 86.000us, min / max: 17.000us / 27.000us, 25th %-ile: 17.000us, 50th %-ile: 19.000us, 75th %-ile: 23.000us, 90th %-ile: 27.000us, 95th %-ile: 27.000us, 99.9th %-ile: 27.000us	Amount of time clients of StateStore Service spent waiting for connection to be set up
statestore.heartbeat-durations	Last (of 47779): 0.000239014. Min: 0, max: 0.00799694, avg: 0.000271092	The time (sec) spent sending heartbeat RPCs. Includes subscriber-side processing time and network transmission time.
rpc-method.statestore.StatestoreService.RegisterSubscriber.call_duration	Count: 5, sum: 1.018ms, min / max: 131.000us / 255.000us, 25th %-ile: 131.000us, 50th %-ile: 228.000us, 75th %-ile: 235.000us, 90th %-ile: 255.000us, 95th %-ile: 255.000us, 99.9th %-ile: 255.000us
impala.thrift-server.StatestoreService.connection-setup-queue-size	0	The number of connections to the Statestore Service that have been accepted and are waiting to be setup.
statestore.num-successful-update-statestored-role-rpc	0	The number of successful RPCs for updating role of statestored.
impala.thrift-server.StatestoreService.svc-thread-wait-time	Count: 4, sum: 8.000us, min / max: 1000.000ns / 3.000us, 25th %-ile: 1000.000ns, 50th %-ile: 2.000us, 75th %-ile: 2.000us, 90th %-ile: 3.000us, 95th %-ile: 3.000us, 99.9th %-ile: 3.000us	Amount of time clients of StateStore Service spent waiting for service threads
statestore.num-failed-update-catalogd-rpc	0	The number of failed RPCs for updating catalogd.
statestore.active-status-int	1	Current active status of this Statestore daemon (treated as integer).
statestore.live-backends.list	[catalog-server@catalog-0.catalog-sv:26000, impalad@impala-coord-exec-0.impala-coord-exec-sv:27000, impalad@impala-exec-0.impala-exec-sv:27000]	The set of all live Statestore subscribers.
subscriber-update-state.client-cache.clients-in-use	0	The number of clients in use by the Statestore update state client cache.
subscriber-update-state.client-cache.total-clients	5	The total number of clients in the Statestore update state client cache.
subscriber-heartbeat.client-cache.clients-in-use	0	The number of clients in use by the Statestore heartbeat client cache.

memory

Name	Value	Description
memory.thp.khugepaged-defrag	1	The system-wide 'defrag' setting for khugepaged.
memory.thp.enabled	always [madvise] never	The system-wide 'enabled' setting for Transparent Huge Pages.
memory.thp.defrag	always defer defer+madvise [madvise] never	The system-wide 'defrag' setting for Transparent Huge Pages.
memory.rss	87.20 MB	Resident set size (RSS) of this process, including TCMalloc, buffer pool and Jvm.
memory.mapped-bytes	681.34 MB	Total bytes of memory mappings in this process (the virtual memory size).
memory.total-used	24.63 MB	Total memory currently used by TCMalloc and buffer pool.

tcmalloc

Name	Value	Description
tcmalloc.pageheap-unmapped-bytes	0	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.
tcmalloc.physical-bytes-reserved	24.63 MB	Number of bytes of physical memory in use by the process, including tcmalloc caches and metadata.
tcmalloc.current-total-thread-cache-bytes	10.78 MB	Number of bytes used across all thread caches. 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.
tcmalloc.transfer-cache-free-bytes	1.30 MB	Number of free bytes that are waiting to be transferred between the central cache and a thread cache. 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.
tcmalloc.central-cache-free-bytes	548.20 KB	Number of free bytes in the central cache that have been assigned to size classes. 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.
tcmalloc.pageheap-free-bytes	1.94 MB	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.
tcmalloc.total-bytes-reserved	24.63 MB	Derived metric computing the amount of system memory reserved by TCMalloc. This includes all tcmalloc caches, metadata, and unmapped virtual memory.
tcmalloc.bytes-in-use	7.44 MB	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.