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ScyllaDB Enterprise Metric Update - ScyllaDB Enterprise 2022.2 to 2024.1¶

ScyllaDB Enterprise 2024.1 Dashboards are available as part of the latest Scylla Monitoring Stack.

New Metrics¶

The following metrics are new in ScyllaDB Enterprise 2024.1 compared to 2022.2:

Metric	Description
scylla_cache_rows_compacted	Total amount of attempts to compact expired rows during read.
scylla_cql_authorized_prepared_statements_privileged_entries_evictions_on_size	Counts the number of evictions of prepared statements from the authorized prepared statements cache after they have been used more than once.
scylla_cql_maximum_replication_factor_fail_violations	Counts the number of maximum_replication_factor_fail_threshold guardrail violations, i.e. attempts to create a keyspace with RF on one of the DCs above the set guardrail.
scylla_cql_maximum_replication_factor_warn_violations	Counts the number of maximum_replication_factor_warn_threshold guardrail violations, i.e. attempts to create a keyspace with RF on one of the DCs above the set guardrail
scylla_cql_minimum_replication_factor_fail_violations	Counts the number of minimum_replication_factor_fail_threshold guardrail violations, i.e. attempts to create a keyspace with RF on one of the DCs below the set guardrail
scylla_cql_minimum_replication_factor_warn_violations	Counts the number of minimum_replication_factor_warn_threshold guardrail violations, i.e. attempts to create a keyspace with RF on one of the DCs below the set guardrail.
scylla_database_querier_cache_scheduling_group_mismatches	Counts querier cache lookups that found a cached querier but had to drop it due to scheduling group mismatch.
scylla_hints_for_views_manager_send_errors	Number of unexpected errors during sending; sending will be retried later.
scylla_hints_manager_send_errors	Number of unexpected errors during sending; sending will be retried later.
scylla_reactor_stalls	A histogram of reactor stall durations.
scylla_storage_proxy_coordinator_background_read_repairs	Number of background read repairs.
scylla_storage_proxy_coordinator_background_writes_failed	Number of write requests that failed after CL was reached.
scylla_storage_proxy_coordinator_canceled_read_repairs	Number of global read repairs canceled due to a concurrent write.
scylla_storage_proxy_coordinator_cas_dropped_prune	How many times a coordinator did not perform prune after CAS.
scylla_storage_proxy_coordinator_cas_failed_read_round_optimization	CAS read rounds issued only if the previous value is missing on some replica.
scylla_storage_proxy_coordinator_cas_read_contention	How many contended reads were encountered.
scylla_storage_proxy_coordinator_cas_read_latency_summary	CAS read latency summary.
scylla_storage_proxy_coordinator_cas_read_latency	Transactional read latency histogram.
scylla_storage_proxy_coordinator_cas_read_timeouts	Number of transactional read requests failed due to a timeout.
scylla_storage_proxy_coordinator_cas_read_unavailable	Number of transactional read requests failed due to an “unavailable” error.
scylla_storage_proxy_coordinator_cas_read_unfinished_commit	Number of transaction commit attempts that occurred on read.
scylla_storage_proxy_coordinator_cas_total_operations	Number of total Paxos operations executed (reads and writes).
scylla_storage_proxy_coordinator_cas_write_condition_not_met	Number of transaction preconditions that did not match current values.
scylla_storage_proxy_coordinator_cas_write_contention	How many contended writes were encountered.
scylla_storage_proxy_coordinator_cas_write_latency_summary	CAS write latency summary.
scylla_storage_proxy_coordinator_cas_write_latency	Transactional write latency histogram.
scylla_storage_proxy_coordinator_cas_write_timeout_due_to_uncertainty	How many times write timeout was reported because of uncertainty in the result.
scylla_storage_proxy_coordinator_cas_write_timeouts	Number of transactional write requests failed due to a timeout.
scylla_storage_proxy_coordinator_cas_write_unavailable	Number of transactional write requests failed due to an “unavailable” error.
scylla_storage_proxy_coordinator_cas_write_unfinished_commit	Number of transaction commit attempts that occurred on write.
scylla_storage_proxy_coordinator_foreground_read_repairs	Number of foreground read repairs.
scylla_storage_proxy_coordinator_range_timeouts	Number of range read operations failed due to a timeout.
scylla_storage_proxy_coordinator_range_unavailable	Number of range read operations failed due to an “unavailable” error.
scylla_storage_proxy_coordinator_read_rate_limited	Number of read requests that were rejected by replicas because the rate limit for the partition was reached.
scylla_storage_proxy_coordinator_read_retries	Number of read retry attempts.
scylla_storage_proxy_coordinator_reads_coordinator_outside_replica_set	Number of CQL read requests that arrived to a non-replica and had to be forwarded to a replica.
scylla_storage_proxy_coordinator_read_timeouts	Number of read requests failed due to a timeout.
scylla_storage_proxy_coordinator_read_unavailable	Number read requests failed due to an “unavailable” error.
scylla_storage_proxy_coordinator_speculative_data_reads	Number of speculative data read requests that were sent
scylla_storage_proxy_coordinator_speculative_digest_reads	Number of speculative digest read requests that were sent.
scylla_storage_proxy_coordinator_throttled_writes	Number of throttled write requests.
scylla_storage_proxy_coordinator_write_rate_limited	Number of write requests that were rejected by replicas because the rate limit for the partition was reached.
scylla_storage_proxy_coordinator_writes_coordinator_outside_replica_set	Number of CQL write requests that arrived to a non-replica and had to be forwarded to a replica.
scylla_storage_proxy_coordinator_writes_failed_due_to_too_many_in_flight_hints	Number of CQL write requests that failed because the hinted handoff mechanism is overloaded and cannot store any more in-flight hints.
scylla_storage_proxy_coordinator_write_timeouts	Number of write requests failed due to a timeout.
scylla_storage_proxy_coordinator_write_unavailable	Number of write requests failed due to an “unavailable” error.
scylla_storage_proxy_replica_cas_dropped_prune	How many times a coordinator did not perfom prune after CAS.
scylla_storage_proxy_replica_cross_shard_ops	Number of operations that crossed a shard boundary.
scylla_storage_proxy_replica_forwarded_mutations	Number of mutations forwarded to other replica nodes.
scylla_storage_proxy_replica_forwarding_errors	Number of errors during forwarding mutations to other replica nodes.
scylla_storage_proxy_replica_reads	Number of remote data read requests this node received.
scylla_storage_proxy_replica_received_counter_updates	Number of counter updates received by this node acting as an update leader.
scylla_storage_proxy_replica_received_mutations	Number of mutations received by a replica node.
scylla_transport_cql_request_bytes	Counts the total number of received bytes in CQL messages of a specific kind.
scylla_transport_cql_requests_count	Counts the total number of CQL messages of a specific kind.
scylla_transport_cql_response_bytes	Counts the total number of sent response bytes for CQL requests of a specific kind.
scylla_view_update_generator_sstables_to_move_count	Number of sets of sstables that are already processed and waiting to be moved from their staging directory.
scylla_database_disk_reads	Holds the number of currently active disk read operations.
scylla_database_reads_memory_consumption	Holds the amount of memory consumed by current read operations issued on behalf of streaming
scylla_database_sstables_read	Holds the number of currently read sstables.
scylla_memory_malloc_failed	Total count of failed memory allocations
scylla_raft_add_entries	How many entries were added on this node
scylla_raft_applied_entries	How many log entries were applied
scylla_raft_group0_status	Status of the raft group: 0 - disabled, 1 - normal, 2 - aborted
scylla_raft_in_memory_log_size	Size of in-memory part of the log
scylla_raft_log_memory_usage	Memory usage of in-memory part of the log in bytes
scylla_raft_messages_received	How many messages were received
scylla_raft_messages_sent	How many messages were send
scylla_raft_persisted_log_entries	How many log entries were persisted
scylla_raft_polls	How many time raft state machine was polled
scylla_raft_queue_entries_for_apply	How many log entries were queued to be applied
scylla_raft_sm_load_snapshot	How many times user state machine was reloaded with a snapshot
scylla_raft_snapshots_taken	How many time the user’s state machine was snapshotted
scylla_raft_store_snapshot	How many snapshot were persisted
scylla_raft_store_term_and_vote	How many times term and vote were persisted
scylla_raft_truncate_persisted_log	How many times log was truncated on storage
scylla_raft_waiter_awoken	How many waiters got result back
scylla_raft_waiter_dropped	How many waiters did not get result back
scylla_storage_proxy_coordinator_read_latency_summary	Read latency summary
scylla_storage_proxy_coordinator_write_latency_summary	Write latency summary
scylla_streaming_finished_percentage	Finished percentage of node operation on this shard
scylla_view_update_generator_sstables_pending_work	Number of bytes remaining to be processed from SSTables for view updates

Renamed Metrics¶

The following metrics are renamed:

2022.x	2024.1
scylla_memory_regular_virtual_dirty_bytes	scylla_memory_regular_unspooled_dirty_bytes
scylla_memory_system_virtual_dirty_bytes	scylla_memory_system_unspooled_dirty_bytes
scylla_memory_virtual_dirty_bytes	scylla_memory_unspooled_dirty_bytes

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