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- scyllascylladb_current_version¶
Current ScyllaDB version.
Type:
gauge
Component:
scylladb
Key:
current_version
number of passes over the database
Type:
total_operations
Component:
expiration
Key:
scan_passes
number of table scans (counting each scan of each table that enabled expiration)
Type:
total_operations
Component:
expiration
Key:
scan_table
number of items deleted after expiration
Type:
total_operations
Component:
expiration
Key:
items_deleted
number of token ranges scanned by this node while their primary owner was down
Type:
total_operations
Component:
expiration
Key:
secondary_ranges_scanned
Index page cache requests which were served from cache
Type:
counter
Component:
sstables
Key:
index_page_cache_hits
Index page cache requests which had to perform I/O
Type:
counter
Component:
sstables
Key:
index_page_cache_misses
Total number of index page cache pages which have been evicted
Type:
counter
Component:
sstables
Key:
index_page_cache_evictions
Total number of index page cache pages which were inserted into the cache
Type:
counter
Component:
sstables
Key:
index_page_cache_populations
Total number of bytes cached in the index page cache
Type:
gauge
Component:
sstables
Key:
index_page_cache_bytes
Total number of bytes in temporary buffers which live in the std allocator
Type:
gauge
Component:
sstables
Key:
index_page_cache_bytes_in_std
Index page requests which could be satisfied without waiting
Type:
counter
Component:
sstables
Key:
index_page_hits
Index page requests which initiated a read from disk
Type:
counter
Component:
sstables
Key:
index_page_misses
Index page requests which needed to wait due to page not being loaded yet
Type:
counter
Component:
sstables
Key:
index_page_blocks
Index pages which got evicted from memory
Type:
counter
Component:
sstables
Key:
index_page_evictions
Index pages which got populated into memory
Type:
counter
Component:
sstables
Key:
index_page_populations
Amount of bytes used by index pages in memory
Type:
gauge
Component:
sstables
Key:
index_page_used_bytes
Number of requests for promoted index block in state l0 which didn’t have to go to the page cache
Type:
counter
Component:
sstables
Key:
pi_cache_hits_l0
Number of requests for promoted index block in state l1 which didn’t have to go to the page cache
Type:
counter
Component:
sstables
Key:
pi_cache_hits_l1
Number of requests for promoted index block in state l2 which didn’t have to go to the page cache
Type:
counter
Component:
sstables
Key:
pi_cache_hits_l2
Number of requests for promoted index block in state l0 which had to go to the page cache
Type:
counter
Component:
sstables
Key:
pi_cache_misses_l0
Number of requests for promoted index block in state l1 which had to go to the page cache
Type:
counter
Component:
sstables
Key:
pi_cache_misses_l1
Number of requests for promoted index block in state l2 which had to go to the page cache
Type:
counter
Component:
sstables
Key:
pi_cache_misses_l2
Number of promoted index blocks which got inserted
Type:
counter
Component:
sstables
Key:
pi_cache_populations
Number of promoted index blocks which got evicted
Type:
counter
Component:
sstables
Key:
pi_cache_evictions
Number of bytes currently used by cached promoted index blocks
Type:
gauge
Component:
sstables
Key:
pi_cache_bytes
Number of promoted index blocks currently cached
Type:
gauge
Component:
sstables
Key:
pi_cache_block_count
Number of partitions written
Type:
counter
Component:
sstables
Key:
partition_writes
Number of static rows written
Type:
counter
Component:
sstables
Key:
static_row_writes
Number of clustering rows written
Type:
counter
Component:
sstables
Key:
row_writes
Number of cells written
Type:
counter
Component:
sstables
Key:
cell_writes
Number of tombstones written
Type:
counter
Component:
sstables
Key:
tombstone_writes
Number of range tombstones written
Type:
counter
Component:
sstables
Key:
range_tombstone_writes
Number of promoted index auto-scaling events
Type:
counter
Component:
sstables
Key:
pi_auto_scale_events
Number of range tombstones read
Type:
counter
Component:
sstables
Key:
range_tombstone_reads
Number of row tombstones read
Type:
counter
Component:
sstables
Key:
row_tombstone_reads
Number of cell tombstones written
Type:
counter
Component:
sstables
Key:
cell_tombstone_writes
Number of single partition flat mutation reads
Type:
counter
Component:
sstables
Key:
single_partition_reads
Number of partition range flat mutation reads
Type:
counter
Component:
sstables
Key:
range_partition_reads
Number of partitions read
Type:
counter
Component:
sstables
Key:
partition_reads
Number of partitions seeked
Type:
counter
Component:
sstables
Key:
partition_seeks
Number of rows read
Type:
counter
Component:
sstables
Key:
row_reads
Number of SStables with tombstones whose local deletion time was capped at the maximum allowed value in Statistics
Type:
counter
Component:
sstables
Key:
capped_local_deletion_time
Number of tombstones whose local deletion time was capped at the maximum allowed value
Type:
counter
Component:
sstables
Key:
capped_tombstone_deletion_time
Counter of sstables open for reading
Type:
counter
Component:
sstables
Key:
total_open_for_reading
Counter of sstables open for writing
Type:
counter
Component:
sstables
Key:
total_open_for_writing
Number of sstables currently open for reading
Type:
gauge
Component:
sstables
Key:
currently_open_for_reading
Number of sstables currently open for writing
Type:
gauge
Component:
sstables
Key:
currently_open_for_writing
Counter of deleted sstables
Type:
counter
Component:
sstables
Key:
total_deleted
Bloom filter memory usage in bytes.
Type:
gauge
Component:
sstables
Key:
bloom_filter_memory_size
Current ScyllaDB version.
Type:
gauge
Component:
scylladb
Key:
current_version
Number of times a entry was allocated over an empty/expired entry.
Type:
counter
Component:
per_partition_rate_limiter
Key:
allocations
Number of times a lookup returned an already allocated entry.
Type:
counter
Component:
per_partition_rate_limiter
Key:
successful_lookups
Number of times the rate limiter gave up trying to allocate.
Type:
counter
Component:
per_partition_rate_limiter
Key:
failed_allocations
Number of probes made during lookups.
Type:
counter
Component:
per_partition_rate_limiter
Key:
probe_count
Current load factor of the hash table (upper bound, may be overestimated).
Type:
gauge
Component:
per_partition_rate_limiter
Key:
load_factor
status of the raft group, 1 - normal, 2 - aborted
Type:
gauge
Component:
raft_group0
Key:
status
Holds the number of currently active compactions.
Type:
gauge
Component:
compaction_manager
Key:
compactions
Holds the number of compaction tasks waiting for an opportunity to run.
Type:
gauge
Component:
compaction_manager
Key:
pending_compactions
Holds the number of completed compaction tasks.
Type:
counter
Component:
compaction_manager
Key:
completed_compactions
Holds the number of failed compaction tasks.
Type:
counter
Component:
compaction_manager
Key:
failed_compactions
Holds the number of tables with postponed compaction.
Type:
gauge
Component:
compaction_manager
Key:
postponed_compactions
Holds the sum of compaction backlog for all tables in the system.
Type:
gauge
Component:
compaction_manager
Key:
backlog
Holds the sum of normalized compaction backlog for all tables in the system. Backlog is normalized by dividing backlog by shard’s available memory.
Type:
gauge
Component:
compaction_manager
Key:
normalized_backlog
Holds the number of encountered validation errors.
Type:
counter
Component:
compaction_manager
Key:
validation_errors
Holds a current size of allocated memory in bytes.
Type:
gauge
Component:
lsa
Key:
total_space_bytes
Holds a current amount of used memory in bytes.
Type:
gauge
Component:
lsa
Key:
used_space_bytes
Holds a current size of small objects memory region in bytes.
Type:
gauge
Component:
lsa
Key:
small_objects_total_space_bytes
Holds a current amount of used small objects memory in bytes.
Type:
gauge
Component:
lsa
Key:
small_objects_used_space_bytes
Holds a current size of allocated non-LSA memory.
Type:
gauge
Component:
lsa
Key:
large_objects_total_space_bytes
Holds a current amount of used non-LSA memory.
Type:
gauge
Component:
lsa
Key:
non_lsa_used_space_bytes
Holds a current amount of free memory that is under lsa control.
Type:
gauge
Component:
lsa
Key:
free_space
Holds a current portion (in percents) of the used memory.
Type:
gauge
Component:
lsa
Key:
occupancy
Counts a number of compacted segments.
Type:
counter
Component:
lsa
Key:
segments_compacted
Counts number of bytes which were copied as part of segment compaction.
Type:
counter
Component:
lsa
Key:
memory_compacted
Counts number of bytes which were requested from LSA.
Type:
counter
Component:
lsa
Key:
memory_allocated
Counts number of bytes which were evicted.
Type:
counter
Component:
lsa
Key:
memory_evicted
Counts number of bytes which were requested to be freed in LSA.
Type:
counter
Component:
lsa
Key:
memory_freed
number of calls to the load balancer
Type:
counter
Component:
group_name
Key:
calls
number of migrations produced by the load balancer
Type:
counter
Component:
group_name
Key:
migrations_produced
number of migrations skipped by the load balancer due to load limits
Type:
counter
Component:
group_name
Key:
migrations_skipped
node load during last load balancing
Type:
gauge
Component:
group_name
Key:
load
number of resizes produced by the load balancer
Type:
counter
Component:
group_name
Key:
resizes_emitted
number of resizes revoked by the load balancer
Type:
counter
Component:
group_name
Key:
resizes_revoked
number of resizes finalized by the load balancer
Type:
counter
Component:
group_name
Key:
resizes_finalized
Counts a number of errors during writing to a system_traces keyspace. One error may cause one or more tracing records to be lost.
Type:
counter
Component:
tracing_keyspace_helper
Key:
tracing_errors
Counts a number of times write failed due to one of the tables in the system_traces keyspace has an incompatible schema. One error may result one or more tracing records to be lost. Non-zero value indicates that the administrator has to take immediate steps to fix the corresponding schema. The appropriate error message will be printed in the syslog.
Type:
counter
Component:
tracing_keyspace_helper
Key:
bad_column_family_errors
Heartbeat of the current Node.
Type:
counter
Component:
gossip
Key:
heart_beat
How many live nodes the current node sees
Type:
gauge
Component:
gossip
Key:
live
How many unreachable nodes the current node sees
Type:
gauge
Component:
gossip
Key:
unreachable
Number of updates (mutations) pushed to remote view replicas
Type:
total_operations
Component:
column_family
Key:
view_updates_pushed_remote
Number of updates (mutations) that failed to be pushed to remote view replicas
Type:
total_operations
Component:
column_family
Key:
view_updates_failed_remote
Number of updates (mutations) pushed to local view replicas
Type:
total_operations
Component:
column_family
Key:
view_updates_pushed_local
Number of updates (mutations) that failed to be pushed to local view replicas
Type:
total_operations
Component:
column_family
Key:
view_updates_failed_local
Number of updates pushed to view and are still to be completed
Type:
gauge
Component:
column_family
Key:
view_updates_pending
Number of tasks waiting to perform bookkeeping operations
Type:
gauge
Component:
view_builder
Key:
pending_bookkeeping_ops
Number of performed build steps.
Type:
counter
Component:
view_builder
Key:
steps_performed
Number of failed build steps.
Type:
counter
Component:
view_builder
Key:
steps_failed
Number of currently active view builds.
Type:
gauge
Component:
view_builder
Key:
builds_in_progress
Total number of bytes received on this shard.
Type:
counter
Component:
streaming
Key:
total_incoming_bytes
Total number of bytes sent on this shard.
Type:
counter
Component:
streaming
Key:
total_outgoing_bytes
Finished percentage of node operation on this shard
Type:
gauge
Component:
streaming
Key:
finished_percentage
Counts write operations issued in a batchlog replay flow. The high value of this metric indicates that we have a long batch replay list.
Type:
counter
Component:
batchlog_manager
Key:
total_write_replay_attempts
current bytes used by the cache out of the total size of memory
Type:
gauge
Component:
cache
Key:
bytes_used
total size of memory for the cache
Type:
gauge
Component:
cache
Key:
bytes_total
number of partitions needed by reads and found in cache
Type:
counter
Component:
cache
Key:
partition_hits
number of partitions needed by reads and missing in cache
Type:
counter
Component:
cache
Key:
partition_misses
total number of partitions added to cache
Type:
counter
Component:
cache
Key:
partition_insertions
total number of rows needed by reads and found in cache
Type:
counter
Component:
cache
Key:
row_hits
total number of dummy rows touched by reads in cache
Type:
counter
Component:
cache
Key:
dummy_row_hits
total number of rows needed by reads and missing in cache
Type:
counter
Component:
cache
Key:
row_misses
total number of rows added to cache
Type:
counter
Component:
cache
Key:
row_insertions
total number of rows evicted from cache
Type:
counter
Component:
cache
Key:
row_evictions
total number of invalidated rows
Type:
counter
Component:
cache
Key:
row_removals
Number of rows dropped in cache by a tombstone write
Type:
counter
Component:
cache
Key:
rows_dropped_by_tombstones
Number of rows scanned during write of a tombstone for the purpose of compaction in cache
Type:
counter
Component:
cache
Key:
rows_compacted_with_tombstones
total number of static rows added to cache
Type:
counter
Component:
cache
Key:
static_row_insertions
total number of operation with misses same key
Type:
counter
Component:
cache
Key:
concurrent_misses_same_key
total number of partitions merged
Type:
counter
Component:
cache
Key:
partition_merges
total number of evicted partitions
Type:
counter
Component:
cache
Key:
partition_evictions
total number of invalidated partitions
Type:
counter
Component:
cache
Key:
partition_removals
number of entries not inserted by reads
Type:
counter
Component:
cache
Key:
mispopulations
total number of cached partitions
Type:
gauge
Component:
cache
Key:
partitions
total number of cached rows
Type:
gauge
Component:
cache
Key:
rows
number of started reads
Type:
counter
Component:
cache
Key:
reads
number of reads which had to read from sstables
Type:
counter
Component:
cache
Key:
reads_with_misses
number of currently active reads
Type:
gauge
Component:
cache
Key:
active_reads
number of times sstable reader was recreated due to memtable flush
Type:
counter
Component:
cache
Key:
sstable_reader_recreations
number of times sstable reader was fast forwarded across partitions
Type:
counter
Component:
cache
Key:
sstable_partition_skips
number of times sstable reader was fast forwarded within a partition
Type:
counter
Component:
cache
Key:
sstable_row_skips
amount of pinned bytes that we tried to unpin over the limit. This should sit constantly at 0, and any number different than 0 is indicative of a bug
Type:
counter
Component:
cache
Key:
pinned_dirty_memory_overload
total number of rows in memtables which were processed during cache update on memtable flush
Type:
counter
Component:
cache
Key:
rows_processed_from_memtable
total number of rows in memtables which were dropped during cache update on memtable flush
Type:
counter
Component:
cache
Key:
rows_dropped_from_memtable
total number of rows in memtables which were merged with existing rows during cache update on memtable flush
Type:
counter
Component:
cache
Key:
rows_merged_from_memtable
total amount of range tombstones processed during read
Type:
counter
Component:
cache
Key:
range_tombstone_reads
total amount of row tombstones processed during read
Type:
counter
Component:
cache
Key:
row_tombstone_reads
total amount of attempts to compact expired rows during read
Type:
counter
Component:
cache
Key:
rows_compacted
total amount of compacted and removed rows during read
Type:
counter
Component:
cache
Key:
rows_compacted_away
Counts the number of times the sstable read queue was overloaded. A non-zero value indicates that we have to drop read requests because they arrive faster than we can serve them.
Type:
counter
Component:
database
Key:
sstable_read_queue_overloads
Holds the number of currently active read operations.
Type:
gauge
Component:
database
Key:
active_reads
Holds the amount of memory consumed by current read operations.
Type:
gauge
Component:
database
Key:
reads_memory_consumption
Holds the number of currently queued read operations.
Type:
gauge
Component:
database
Key:
queued_reads
The number of currently active reads that are temporarily paused.
Type:
gauge
Component:
database
Key:
paused_reads
The number of paused reads evicted to free up permits. Permits are required for new reads to start, and the database will evict paused reads (if any) to be able to admit new ones, if there is a shortage of permits.
Type:
counter
Component:
database
Key:
paused_reads_permit_based_evictions
The number of reads shed because the admission queue reached its max capacity. When the queue is full, excessive reads are shed to avoid overload.
Type:
counter
Component:
database
Key:
reads_shed_due_to_overload
Holds the number of currently active disk read operations.
Type:
gauge
Component:
database
Key:
disk_reads
Holds the number of currently read sstables.
Type:
gauge
Component:
database
Key:
sstables_read
Counts the total number of successful user reads on this shard.
Type:
counter
Component:
database
Key:
total_reads
Counts the total number of failed user read operations. Add the total_reads to this value to get the total amount of reads issued on this shard.
Type:
counter
Component:
database
Key:
total_reads_failed
Total number of connections
Type:
gauge
Component:
s3
Key:
nr_connections
Total number of connections with running requests
Type:
gauge
Component:
s3
Key:
nr_active_connections
Total number of new connections created so far
Type:
counter
Component:
s3
Key:
total_new_connections
Total number of object read requests
Type:
counter
Component:
s3
Key:
total_read_requests
Total number of object write requests
Type:
counter
Component:
s3
Key:
total_write_requests
Total number of bytes read from objects
Type:
counter
Component:
s3
Key:
total_read_bytes
Total number of bytes written to objects
Type:
counter
Component:
s3
Key:
total_write_bytes
Total time spent reading data from objects
Type:
counter
Component:
s3
Key:
total_read_latency_sec
Total time spend writing data to objects
Type:
counter
Component:
s3
Key:
total_write_latency_sec
The number of user defined function cache hits
Type:
counter
Component:
user_functions
Key:
cache_hits
The number of user defined functions loaded
Type:
counter
Component:
user_functions
Key:
cache_misses
The number of times a user defined function waited for an instance
Type:
counter
Component:
user_functions
Key:
cache_blocks
The total number of cached wasm instances, instances in use and empty instances
Type:
gauge
Component:
user_functions
Key:
cache_instace_count_any
The total size of instances stored in the user defined function cache
Type:
gauge
Component:
user_functions
Key:
cache_total_size
Number of tasks waiting to register staging sstables
Type:
gauge
Component:
view_update_generator
Key:
pending_registrations
Number of sets of sstables queued for view update generation
Type:
gauge
Component:
view_update_generator
Key:
queued_batches_count
Number of sets of sstables which are already processed and wait to be moved from their staging directory
Type:
gauge
Component:
view_update_generator
Key:
sstables_to_move_count
Number of bytes remaining to be processed from SSTables for view updates
Type:
gauge
Component:
view_update_generator
Key:
sstables_pending_work
Size of hinted mutations that are scheduled to be written.
Type:
gauge
Component:
group_name
Key:
size_of_hints_in_progress
Number of successfully written hints.
Type:
counter
Component:
group_name
Key:
written
Number of errors during hints writes.
Type:
counter
Component:
group_name
Key:
errors
Number of dropped hints.
Type:
counter
Component:
group_name
Key:
dropped
Number of sent hints.
Type:
counter
Component:
group_name
Key:
sent_total
The total size of the sent hints (in bytes)
Type:
counter
Component:
group_name
Key:
sent_bytes_total
Number of hints that were discarded during sending (too old, schema changed, etc.).
Type:
counter
Component:
group_name
Key:
discarded
Number of unexpected errors during sending, sending will be retried later
Type:
counter
Component:
group_name
Key:
send_errors
Number of hints files that were discarded during sending because the file was corrupted.
Type:
counter
Component:
group_name
Key:
corrupted_files
Number of tasks waiting in the queue for draining hints
Type:
gauge
Component:
group_name
Key:
pending_drains
Number of tasks waiting in the queue for sending a hint
Type:
gauge
Component:
group_name
Key:
pending_sends
The operation mode of the current node. UNKNOWN = 0, STARTING = 1, JOINING = 2, NORMAL = 3, LEAVING = 4, DECOMMISSIONED = 5, DRAINING = 6, DRAINED = 7, MOVING = 8, MAINTENANCE = 9
Type:
gauge
Component:
node
Key:
operation_mode
how many mapreduce requests were dispatched to other nodes
Type:
total_operations
Component:
mapreduce_service
Key:
requests_dispatched_to_other_nodes
how many mapreduce requests were dispatched to local shards
Type:
total_operations
Component:
mapreduce_service
Key:
requests_dispatched_to_own_shards
how many mapreduce requests were executed
Type:
total_operations
Component:
mapreduce_service
Key:
requests_executed
Total number of rows sent on this shard.
Type:
counter
Component:
repair
Key:
tx_row_nr
Total number of rows received on this shard.
Type:
counter
Component:
repair
Key:
rx_row_nr
Total bytes of rows sent on this shard.
Type:
counter
Component:
repair
Key:
tx_row_bytes
Total bytes of rows received on this shard.
Type:
counter
Component:
repair
Key:
rx_row_bytes
Total number of row hashes sent on this shard.
Type:
counter
Component:
repair
Key:
tx_hashes_nr
Total number of row hashes received on this shard.
Type:
counter
Component:
repair
Key:
rx_hashes_nr
Total number of rows read from disk on this shard.
Type:
counter
Component:
repair
Key:
row_from_disk_nr
Total bytes of rows read from disk on this shard.
Type:
counter
Component:
repair
Key:
row_from_disk_bytes
Finished percentage of node operation on this shard
Type:
gauge
Component:
node_ops
Key:
finished_percentage
number of operations via redis API
Type:
total_operations
Component:
redis
Key:
operation
Latency histogram of an operation via redis API
Type:
histogram
Component:
redis
Key:
op_latency
Counts a number of client connections.
Type:
counter
Component:
redis
Key:
redis-connections
Holds a current number of client connections.
Type:
gauge
Component:
redis
Key:
current_connections
Counts a number of served requests.
Type:
counter
Component:
redis
Key:
requests_served
Holds a number of requests that are being processed right now.
Type:
gauge
Component:
redis
Key:
requests_serving
The general requests latency histogram
Type:
histogram
Component:
redis
Key:
requests_latency
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