Impala Catalog Server Metrics

Reference information for Impala Catalog Server 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 Catalog Server:

  • 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

impala_catalogserver_jvm_heap_committed_usage_bytes

Description
Jvm heap Committed Usage Bytes
Unit
bytes
Parents
cluster, impala, rack
CDH Version
CDH 5, CDH 6, CDH 7

impala_catalogserver_jvm_heap_current_usage_bytes

Description
Jvm heap Current Usage Bytes
Unit
bytes
Parents
cluster, impala, rack
CDH Version
CDH 5, CDH 6, CDH 7

impala_catalogserver_jvm_heap_init_usage_bytes

Description
JVM heap Init Usage Bytes
Unit
bytes
Parents
cluster, impala, rack
CDH Version
CDH 5, CDH 6, CDH 7

impala_catalogserver_jvm_heap_max_usage_bytes

Description
JVM heap Max Usage Bytes
Unit
bytes
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_subscriber_heartbeat_interval_time_last

Description
The most recent interval between heartbeats from this Impala Daemon to the StateStore.
Unit
seconds
Parents
CDH Version
CDH 5, CDH 6, CDH 7

statestore_subscriber_heartbeat_interval_time_max

Description
The maximum interval between heartbeats from this Impala Daemon to the StateStore. This is calculated over the lifetime of the Impala Daemon.
Unit
seconds
Parents
CDH Version
CDH 5, CDH 6, CDH 7

statestore_subscriber_heartbeat_interval_time_mean

Description
The average interval between heartbeats from this Impala Daemon to the StateStore. This is calculated over the lifetime of the Impala Daemon.
Unit
seconds
Parents
CDH Version
CDH 5, CDH 6, CDH 7

statestore_subscriber_heartbeat_interval_time_min

Description
The minimum interval between heartbeats from this Impala Daemon to the StateStore. This is calculated over the lifetime of the Impala Daemon.
Unit
seconds
Parents
CDH Version
CDH 5, CDH 6, CDH 7

statestore_subscriber_heartbeat_interval_time_rate

Description
The total number of samples taken of the Impala Daemon's StateStore heartbeat interval.
Unit
samples per second
Parents
CDH Version
CDH 5, CDH 6, CDH 7

statestore_subscriber_heartbeat_interval_time_stddev

Description
The standard deviation in the interval between heartbeats from this Impala Daemon to the StateStore. This is calculated over the lifetime of the Impala Daemon.
Unit
seconds
Parents
CDH Version
CDH 5, CDH 6, CDH 7

statestore_subscriber_last_recovery_duration

Description
The amount of time the StateStore subscriber took to recover the connection the last time it was lost.
Unit
seconds
Parents
cluster, impala, rack
CDH Version
CDH 5, CDH 6, CDH 7

statestore_subscriber_statestore_client_cache_clients_in_use

Description
The number of active StateStore subscriber clients in this Impala Daemon's client cache. These clients are for communication from this role to the StateStore.
Unit
connections
Parents
cluster, impala, rack
CDH Version
CDH 5, CDH 6, CDH 7

statestore_subscriber_statestore_client_cache_total_clients

Description
The total number of StateStore subscriber clients in this Impala Daemon's client cache. These clients are for communication from this role to the StateStore.
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

thrift_server_catalog_service_connections_in_use

Description
The number of active catalog service connections to this Catalog Server.
Unit
connections
Parents
cluster, impala, rack
CDH Version
CDH 5, CDH 6, CDH 7

thrift_server_catalog_service_connections_rate

Description
The total number of connections made to this Catalog Server's catalog 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

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