INFO SEARCH metrics

Only Application metrics are listed here. These are kept compatible across releases. Developer metrics are hidden unless search.info-developer-visible is set to yes, and may change or be removed in any release without notice.

Some metrics are reported only when they apply. The coordinator_* metrics appear only when the module is loaded with --use-coordinator. Metrics ending in _latency_usec additionally appear only after at least one sample has been recorded.

Metric Name	Section	Unit	Description
compatibility-invalid_data_drops_key	compatibility	Count	Count of key mutations with malformed indexed data that kept the key indexed (field treated as missing) because search.emulate-release is below 1.3.0 (see below)
coordinator_bytes_in	coordinator	Bytes	Total size (in bytes) of incoming gRPC response messages received by the coordinator client from remote nodes
coordinator_bytes_out	coordinator	Bytes	Total size (in bytes) of outgoing gRPC request messages sent by the coordinator client to remote nodes
coordinator_client_get_global_metadata_failure_count	coordinator	Count	Count of failed client requests to get global metadata
coordinator_client_get_global_metadata_failure_latency_usec	coordinator	Microseconds	Latency distribution (in microseconds) for failed client metadata requests
coordinator_client_get_global_metadata_success_count	coordinator	Count	Count of successful client requests to get global metadata
coordinator_client_get_global_metadata_success_latency_usec	coordinator	Microseconds	Latency distribution (in microseconds) for successful client metadata requests
coordinator_client_search_index_partition_failure_count	coordinator	Count	Count of failed client searches on index partitions
coordinator_client_search_index_partition_failure_latency_usec	coordinator	Microseconds	Latency distribution (in microseconds) for failed partition searches
coordinator_client_search_index_partition_success_count	coordinator	Count	Count of successful client searches on index partitions
coordinator_client_search_index_partition_success_latency_usec	coordinator	Microseconds	Latency distribution (in microseconds) for successful partition searches
coordinator_server_get_global_metadata_failure_count	coordinator	Count	Count of failed server requests to get global metadata
coordinator_server_get_global_metadata_failure_latency_usec	coordinator	Microseconds	Latency distribution (in microseconds) for failed server metadata requests
coordinator_server_get_global_metadata_success_count	coordinator	Count	Count of successful server requests to get global metadata
coordinator_server_get_global_metadata_success_latency_usec	coordinator	Microseconds	Latency distribution (in microseconds) for successful server metadata requests
coordinator_server_listening_port	coordinator	Port	The port number the coordinator server is listening on
coordinator_server_search_index_partition_failure_count	coordinator	Count	Count of failed server searches on index partitions
coordinator_server_search_index_partition_failure_latency_usec	coordinator	Microseconds	Latency distribution (in microseconds) for failed server partition searches
coordinator_server_search_index_partition_success_count	coordinator	Count	Count of successful server searches on index partitions
coordinator_server_search_index_partition_success_latency_usec	coordinator	Microseconds	Latency distribution (in microseconds) for successful server partition searches
coordinator_threads_cpu_time_sec	coordinator	Seconds	Cumulative CPU time consumed by coordinator (gRPC) threads
hnsw_add_exceptions_count	hnswlib	Count	Count of exceptions during HNSW vector additions
hnsw_create_exceptions_count	hnswlib	Count	Count of exceptions during HNSW vector creation
hnsw_modify_exceptions_count	hnswlib	Count	Count of exceptions during HNSW vector modifications
hnsw_remove_exceptions_count	hnswlib	Count	Count of exceptions during HNSW vector removals
hnsw_search_exceptions_count	hnswlib	Count	Count of exceptions during HNSW vector searches
number_of_attributes	index_stats	Count	Total count of all attributes across all search indexes
number_of_indexes	index_stats	Count	Total number of search indexes
num_cursors	cursors	Count	Number of open cursors created by WITHCURSOR
total_active_write_threads	index_stats	Count	Number of active writer threads (0 if suspended, otherwise the writer thread pool size)
total_indexed_documents	index_stats	Count	Total number of indexed documents across all search indexes
background_indexing_status	indexing	String	Background indexing status: IN_PROGRESS or NO_ACTIVITY
flat_vector_index_search_latency_usec	latency	Microseconds	Latency distribution (in microseconds) for flat vector index searches
hnsw_vector_index_search_latency_usec	latency	Microseconds	Latency distribution (in microseconds) for HNSW vector index searches
index_reclaimable_memory	memory	Bytes	Track memory that can be reclaimed after vector deletions
used_memory_bytes	memory	Bytes	Total memory used by the module (in bytes)
used_memory_human	memory	String	Total memory used by the module (in human readable format)
successful_requests_count	query	Count	Total count of successful query requests
failure_requests_count	query	Count	Total count of failed query requests
hybrid_requests_count	query	Count	Count of hybrid queries (combining vector and non-vector filters)
nonvector_requests_count	query	Count	Number of requests that are exclusively non-vector search queries, including vector range (VECTOR_RANGE) queries
vector_requests_count	query	Count	Number of query requests that include a vector component
inline_filtering_requests_count	query	Count	Count of queries using inline filtering
prefiltering_requests_count	query	Count	Count of queries using pre-filtering
result_record_dropped_count	query	Count	Tracks records dropped when FT.SEARCH results exceed configured limits
rdb_load_failure_cnt	rdb	Count	Number of failed RDB load operations
rdb_load_success_cnt	rdb	Count	Number of successful RDB load operations
rdb_save_failure_cnt	rdb	Count	Number of failed RDB save operations
rdb_save_success_cnt	rdb	Count	Number of successful RDB save operations
string_interning_store_size	string_interning	Count	Number of unique strings in the interning store
query_queue_size	thread-pool	Count	Current size of the reader thread pool queue
reader_resumed_cnt	thread-pool	Count	Number of times the reader worker thread pool was resumed
used_read_cpu	thread-pool	Percent	Average CPU percentage used by reader threads (returns -1 if unavailable)
used_write_cpu	thread-pool	Percent	Average CPU percentage used by writer threads (returns -1 if unavailable)
worker_pool_suspend_cnt	thread-pool	Count	Number of times the worker thread pool was suspended
writer_queue_size	thread-pool	Count	Current size of the writer thread pool queue
writer_resumed_cnt	thread-pool	Count	Number of times the writer worker thread pool was resumed
writer_suspension_expired_cnt	thread-pool	Count	Number of times writer suspension expired due to timeout
vector_registry_dedup_cnt	vector_registry	Count	Count of vector updates that reused an already registered copy of an identical vector
vector_registry_entry_cnt	vector_registry	Count	Number of vectors currently tracked by the vector registry
vector_registry_pending_unshare_cnt	vector_registry	Count	Number of vectors queued to stop being shared with the engine, after their index was dropped
vector_registry_shared_externally_cnt	vector_registry	Count	Count of vectors successfully shared with the engine's hash field, so only one copy is kept in memory
vector_registry_shared_externally_errors	vector_registry	Count	Count of failed attempts to share a vector with the engine's hash field
vector_registry_sharing_active	vector_registry	Boolean	1 if vector memory sharing with the engine is enabled, otherwise 0

Compatibility counters

Each compatibility-* metric counts how often a legacy, incompatible behavior was used because search.emulate-release is set below the release that fixed it. See Compatibility Defects for the full list and what each one changes. compatibility-invalid_data_drops_key is always reported; the others appear in INFO SEARCH only after the code path is first reached.