Compute Node Metrics

This page documents Prometheus metrics emitted by Compute Nodes, which are the processes that execute distributed query fragments and manage data movement in Yellowbrick's architecture.

Purpose

These metrics provide detailed visibility into the health, stability, and behavior of individual compute nodes. They are used to:

• Monitor compute nodes uptime and crash patterns
• Diagnose issues with heartbeat timing and I/O
• Detect exit codes and termination reasons (e.g., out-of-memory, unrecoverable signals)
• Track YRD traffic, loader cache usage, and time synchronization skew

These insights are vital for debugging compute nodes instability, verifying cluster coordination, and building high-reliability monitoring dashboards.

Metrics

Name	Type	Freq	Labels	Version Introduced	Version Deprecated	Description
yb_heartbeat_recv_ms_count	counter	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Milliseconds from when a Heartbeat was sent until response (count of samples since last worker start)
yb_heartbeat_recv_ms_max	gauge	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Milliseconds from when a Heartbeat was sent until response (maximum sample since last worker start)
yb_heartbeat_recv_ms_min	gauge	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Milliseconds from when a Heartbeat was sent until response (minimum sample since last worker start)
yb_heartbeat_recv_ms_total	counter	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Milliseconds from when a Heartbeat was sent until response (sum since last worker start)
yb_heartbeat_send_ms_count	counter	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Milliseconds from when a Heartbeat was scheduled until sent (count of samples since last worker start)
yb_heartbeat_send_ms_max	gauge	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Milliseconds from when a Heartbeat was scheduled until sent (maximum sample since last worker start)
yb_heartbeat_send_ms_min	gauge	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Milliseconds from when a Heartbeat was scheduled until sent (minimum sample since last worker start)
yb_heartbeat_send_ms_total	counter	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Milliseconds from when a Heartbeat was scheduled until sent (sum since last worker start)
yb_lime_heartbeat_elapsed_time_percent	histogram	10s	cluster, cluster_name, worker_id	7.4.0	-	Elapsed time in percent of the heartbeat timeout
yb_lime_heartbeat_error_total	counter	10s	cluster, cluster_name, worker_id	7.4.0	-	Total number of heartbeat errors
yb_lime_loader_cache_available_size	gauge	10s	cluster, cluster_name	7.4.0	-	Estimated minimum available loader cache space across all workers in the compute cluster
yb_obj_store_recv_count_total	counter	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Object store HTTP bytes received (count of samples since last worker start)
yb_obj_store_recv_fail_total	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	Object store socket failed receive calls
yb_obj_store_recv_max	gauge	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Object store HTTP bytes received (maximum sample since last worker start)
yb_obj_store_recv_min	gauge	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Object store HTTP bytes received (minimum sample since last worker start)
yb_obj_store_recv_sum_total	counter	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Object store HTTP bytes received (sum since last worker start)
yb_obj_store_send_count_total	counter	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Object store HTTP bytes sent (count of samples since last worker start)
yb_obj_store_send_fail_total	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	Object store socket failed send calls
yb_obj_store_send_max	gauge	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Object store HTTP bytes sent (maximum sample since last worker start)
yb_obj_store_send_min	gauge	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Object store HTTP bytes sent (minimum sample since last worker start)
yb_obj_store_send_sum_total	counter	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Object store HTTP bytes sent (sum since last worker start)
yb_timeout_queue_late_ms_count	counter	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Milliseconds the timeout queue was late (count of samples since last worker start)
yb_timeout_queue_late_ms_max	gauge	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Milliseconds the timeout queue was late (maximum sample since last worker start)
yb_timeout_queue_late_ms_min	gauge	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Milliseconds the timeout queue was late (minimum sample since last worker start)
yb_timeout_queue_late_ms_total	counter	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	Milliseconds the timeout queue was late (sum since last worker start)
yb_tsc_skew1000_percent_count	counter	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	1000x Percent Skew between TSC and Timespec (count of samples since last worker start)
yb_tsc_skew1000_percent_max	gauge	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	1000x Percent Skew between TSC and Timespec (maximum sample since last worker start)
yb_tsc_skew1000_percent_min	gauge	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	1000x Percent Skew between TSC and Timespec (minimum sample since last worker start)
yb_tsc_skew1000_percent_total	counter	10s	cluser, cluster_name, worker_logical_id, worker_uuid	7.4.0	-	1000x Percent Skew between TSC and Timespec (sum since last worker start)
yb_unload_heart_beat_count_total	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	Unload heartbeat count
yb_worker_exit_code_cluster_reset	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to CLUSTER_RESET
yb_worker_exit_code_configure_not_quiesced	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to CONFIGURE_NOT_QUIESCED
yb_worker_exit_code_general_error	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to GENERAL_ERROR
yb_worker_exit_code_ib_connection_down	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to IB_CONNECTION_DOWN
yb_worker_exit_code_minidump_exception	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to MINIDUMP_EXCEPTION
yb_worker_exit_code_minidump_repeated	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to MINIDUMP_REPEATED
yb_worker_exit_code_numa_oom	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to NUMA_OUT_OF_MEMORY
yb_worker_exit_code_other_reason	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to OTHER_REASON
yb_worker_exit_code_other_signal	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to some other signal
yb_worker_exit_code_recopy_worker	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to RECOPY_WORKER
yb_worker_exit_code_sigabrt	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to signal SIGABRT
yb_worker_exit_code_sigalrm	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to signal SIGALRM
yb_worker_exit_code_sigbus	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to signal SIGBUS
yb_worker_exit_code_sigfpe	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to signal SIGFPE
yb_worker_exit_code_sighup	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to signal SIGHUP
yb_worker_exit_code_sigill	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to signal SIGILL
yb_worker_exit_code_sigint	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to signal SIGINT
yb_worker_exit_code_sigkill	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to signal SIGKILL
yb_worker_exit_code_sigpipe	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to signal SIGPIPE
yb_worker_exit_code_sigsegv	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to signal SIGSEGV (segmentation fault)
yb_worker_exit_code_sigtrap	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to signal SIGTRAP
yb_worker_exit_code_success	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to SUCCESS
yb_worker_exit_code_unknown	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to unknown
yb_worker_exit_code_ybd_assert	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	exit due to YBD_ASSERT
yb_worker_last_exit_code	gauge	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	The last exit code or -1
yb_worker_uptime_sec	counter	10s	cluster, worker_logical_id, worker_uuid	7.4.0	-	Worker uptime in seconds