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:

statestore_subscriber_last_recovery_duration_across_clusters
total_statestore_subscriber_last_recovery_duration_across_clusters

Some metrics, such as alerts_rate, apply to nearly every metric context. Others only apply to a certain service or role.

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

tcmalloc_total_bytes_reserved🔗

Description: Bytes of system memory reserved by TCMalloc.
Unit: bytes
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

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 5.0.0..CDH 5.7.0), [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

alerts_rate🔗

Description: The number of alerts.
Unit: events per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

cgroup_cpu_system_rate🔗

Description: CPU usage of the role's cgroup
Unit: seconds per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

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 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

cgroup_mem_page_cache🔗

Description: Page cache usage of the role's cgroup
Unit: bytes
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

cgroup_mem_rss🔗

Description: Resident memory of the role's cgroup
Unit: bytes
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

cgroup_mem_swap🔗

Description: Swap usage of the role's cgroup
Unit: bytes
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

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 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

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 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

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 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

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 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

cpu_system_rate🔗

Description: Total System CPU
Unit: seconds per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

cpu_user_rate🔗

Description: Total CPU user time
Unit: seconds per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

events_critical_rate🔗

Description: The number of critical events.
Unit: events per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

events_important_rate🔗

Description: The number of important events.
Unit: events per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

events_informational_rate🔗

Description: The number of informational events.
Unit: events per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

fd_max🔗

Description: Maximum number of file descriptors
Unit: file descriptors
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

fd_open🔗

Description: Open file descriptors.
Unit: file descriptors
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

health_bad_rate🔗

Description: Percentage of Time with Bad Health
Unit: seconds per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

health_concerning_rate🔗

Description: Percentage of Time with Concerning Health
Unit: seconds per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

health_disabled_rate🔗

Description: Percentage of Time with Disabled Health
Unit: seconds per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

health_good_rate🔗

Description: Percentage of Time with Good Health
Unit: seconds per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

health_unknown_rate🔗

Description: Percentage of Time with Unknown Health
Unit: seconds per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

mem_rss🔗

Description: Resident memory used
Unit: bytes
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

mem_swap🔗

Description: Amount of swap memory used by this role's process.
Unit: bytes
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

mem_virtual🔗

Description: Virtual memory used
Unit: bytes
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

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 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

read_bytes_rate🔗

Description: The number of bytes read from the device
Unit: bytes per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

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 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

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 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

write_bytes_rate🔗

Description: The number of bytes written to the device
Unit: bytes per second
Parents: cluster, impala, rack
CDH Version: [CDH 5.0.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0), [CM -1.0.0..CM -1.0.0]

impala_catalogserver_jvm_heap_committed_usage_bytes🔗

Description: Jvm heap Committed Usage Bytes
Unit: bytes
Parents: cluster, impala, rack
CDH Version: [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

impala_catalogserver_jvm_heap_current_usage_bytes🔗

Description: Jvm heap Current Usage Bytes
Unit: bytes
Parents: cluster, impala, rack
CDH Version: [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

impala_catalogserver_jvm_heap_init_usage_bytes🔗

Description: JVM heap Init Usage Bytes
Unit: bytes
Parents: cluster, impala, rack
CDH Version: [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)

impala_catalogserver_jvm_heap_max_usage_bytes🔗

Description: JVM heap Max Usage Bytes
Unit: bytes
Parents: cluster, impala, rack
CDH Version: [CDH 5.7.0..CDH 6.0.0), [CDH 6.0.0..CDH 7.0.0), [CDH 7.0.0..CDH 8.0.0)