Skip to main content Module metrics Copy item path Source manifest_size 🔒 CACHE_BYTES Cache size in bytes. CACHE_CAPACITY_BYTES Configured capacity summed across live page caches in each category. CACHE_EVICTION Cache eviction counter, labeled with cache type and eviction reason. CACHE_FILL_DOWNLOADED_FILES Total number of files downloaded during cache fill on region open. CACHE_FILL_PENDING_FILES Number of files pending download during cache fill on region open. CACHE_HIT Cache hit counter. CACHE_MISS Cache miss counter. CACHE_NATIVE_LOAD_ACTIVE CACHE_NATIVE_LOAD_ELAPSED CACHE_NATIVE_LOAD_EVENTS Native cache request and actual loader lifecycle; request is not a waiter count. CACHE_PAGE_BYTES CACHE_PAGE_LOADED_BYTES COMPACTION_ADMISSION_WAIT COMPACTION_ADMITTED_UNITS Includes authorized work not yet polled, through task exit and lease release. COMPACTION_ELAPSED_TOTAL Elapsed time of each successfully published compaction unit, labeled by type. COMPACTION_FAILURE_COUNT Counter of failed compaction task. COMPACTION_INPUT_BYTES Counter for compaction input file size. COMPACTION_MEMORY_IN_USE Bytes reserved by compaction memory manager. COMPACTION_MEMORY_LIMIT Configured compaction memory limit. COMPACTION_MEMORY_REJECTED Counter of rejected compaction memory allocations. COMPACTION_MEMORY_WAIT Wait time to obtain compaction memory. COMPACTION_OUTPUT_BYTES Counter for compaction output file size. COMPACTION_READY_UNITS Prepared compaction units waiting for global admission. COMPACTION_REQUEST_COUNT Counter of all requested compaction task. COMPACTION_STAGE_ELAPSED Timer of different stages in compaction. FLUSH_BYTES_TOTAL Histogram of flushed bytes. FLUSH_ELAPSED Elapsed time of a flush job. FLUSH_FAILURE_TOTAL Counter of scheduled failed flush jobs. FLUSH_FILE_TOTAL Counter of flush files. FLUSH_REQUESTS_TOTAL Counter of scheduled flush requests.
Note that the flush scheduler may merge some flush requests. GC_DELETE_FILE_CNT Counter for the number of files deleted by the GC worker. GC_DURATION_SECONDS Histogram for GC operation duration by stage. GC_ERRORS_TOTAL Counter for GC errors by type. GC_FILES_DELETED_TOTAL Counter for total files deleted by GC, labeled by file type. GC_ORPHANED_INDEX_FILES Counter for the number of orphaned index files found by GC. GC_REF_FILE_CNT Number of ref files GC_RUNS_TOTAL Counter for GC runs by mode. GC_SKIPPED_UNPARSABLE_FILES Counter for the number of unparsable files skipped by GC. HANDLE_REQUEST_ELAPSED Elapsed time to handle requests. INDEX_APPLY_ELAPSED Timer of index application. INDEX_APPLY_MEMORY_USAGE Gauge of index apply memory usage. INDEX_ARTIFACT_CLEANUP_FAILURE_TOTAL Number of failures while cleaning local state for stale index artifacts. INDEX_CREATE_BYTES_TOTAL Counter of created index bytes. INDEX_CREATE_ELAPSED Timer of index creation. INDEX_CREATE_MEMORY_USAGE Gauge of index create memory usage. INDEX_CREATE_ROWS_TOTAL Counter of rows indexed. INDEX_INTERMEDIATE_FLUSH_OP_TOTAL Counter of flush operations on intermediate files. INDEX_INTERMEDIATE_READ_BYTES_TOTAL Counter of read bytes on intermediate files. INDEX_INTERMEDIATE_READ_OP_TOTAL Counter of read operations on intermediate files. INDEX_INTERMEDIATE_SEEK_OP_TOTAL Counter of seek operations on intermediate files. INDEX_INTERMEDIATE_WRITE_BYTES_TOTAL Counter of write bytes on intermediate files. INDEX_INTERMEDIATE_WRITE_OP_TOTAL Counter of write operations on intermediate files. INDEX_IO_BYTES_TOTAL Counter of r/w bytes on index related IO operations. INDEX_IO_OP_TOTAL Counter of r/w operations on index related IO operations, e.g. read, write, seek and flush. INDEX_PUBLICATION_STALE_TOTAL Number of stale index publications rejected at each publication stage. INDEX_PUFFIN_FLUSH_OP_TOTAL Counter of flush operations on puffin files. INDEX_PUFFIN_READ_BYTES_TOTAL Counter of read bytes on puffin files. INDEX_PUFFIN_READ_OP_TOTAL Counter of read operations on puffin files. INDEX_PUFFIN_SEEK_OP_TOTAL Counter of seek operations on puffin files. INDEX_PUFFIN_WRITE_BYTES_TOTAL Counter of write bytes on puffin files. INDEX_PUFFIN_WRITE_OP_TOTAL Counter of write operations on puffin files. INFLIGHT_COMPACTION_COUNT Gauge for inflight compaction tasks: local units and remote jobs. INFLIGHT_FLUSH_COUNT Gauge for inflight flush tasks. IN_PROGRESS_SCAN Number of in-progress scan per partition. MANIFEST_OP_ELAPSED Elapsed time of manifest operation. Labeled with “op”. MEMTABLE_ACTIVE_FIELD_BUILDER_COUNT Active field builder count in TimeSeriesMemtable MEMTABLE_ACTIVE_SERIES_COUNT Active series count in TimeSeriesMemtable MEMTABLE_DICT_BYTES Global memtable dictionary size in bytes. MERGE_FILTER_ROWS_TOTAL Counter of filtered rows during merge. PRECISE_FILTER_ROWS_TOTAL Counter of filtered rows by precise filter. PRUNER_ACTIVE_BUILDERS Gauge for active file range builders in the pruner. RANGE_CACHE_STAGING_BYTES RANGE_CACHE_STREAMING_BYTES RANGE_CACHE_WORKER_EVENTS Bounded event labels distinguish lookup misses from actual shared loads. READ_BATCHES_RETURN Histogram for the number of batches returned per query. READ_ROWS_IN_ROW_GROUP_TOTAL READ_ROWS_RETURN Histogram for the number of rows returned per query. READ_ROWS_TOTAL Counter of rows read from different source. READ_ROW_GROUPS_TOTAL Counter of row groups read. READ_SST_COUNT Histogram for the number of SSTs to scan per query. READ_STAGE_ELAPSED Timer of different stages in query. READ_STAGE_FETCH_PAGES REGION_COUNT Gauge for open regions in each worker. REGION_WORKER_HANDLE_WRITE_ELAPSED REQUEST_WAIT_TIME Time waiting for requests to be handled by the region worker. SCAN_MAX_CONCURRENT_FILES Planned maximum concurrent sources per query scan limit evaluation or compaction reader.
Includes memtables counted by the file limit, rejected scans, and memory-budgeted scans. SCAN_MEMORY_EXHAUSTED_TOTAL Counter of scan allocation attempts that could not acquire memory immediately. SCAN_MEMORY_USAGE_BYTES Gauge for scan memory usage in bytes. SCAN_REQUESTS_REJECTED_TOTAL Counter of scan requests that ultimately failed due to memory pressure. SERIES_INDEX_CAPACITY_DEFERRED Maintenance passes deferred by the estimated disk usage. SERIES_INDEX_DISK_BYTES Approximate published index bytes in open regions, refreshed by maintenance. SERIES_INDEX_FILE_OPERATION_TOTAL Series and range index file operations. SERIES_INDEX_RECONCILE_ELAPSED Elapsed time of series-index reconciliation phases. SERIES_INDEX_RECONCILE_TOTAL Outcomes of series-index reconciliation passes. SWEEP_ERRORS_TOTAL Counter for the number of failures while sweeping temporary files. SWEEP_FILES_DELETED_TOTAL Counter for the number of temporary files deleted by the sweeper. SWEEP_RUNS_TOTAL Counter for the number of temporary file sweeps run. StagerMetrics Stager notifier to collect metrics. TWCS_PICK_ELAPSED TWCS candidate planning wall time, including blocking-pool waits and
empty/error attempts. mode is fair or stateless, never a region ID. TWCS_SCANNED_WINDOWS Windows whose candidate discovery actually started, including windows
with no eligible candidates; excludes windows skipped by early exit. TWCS_SELECTED_CANDIDATES Automatic seeds attempted within the output budget, including seeds
absorbed by or rejected with a LastNonNull closure. Excludes work left
behind by the budget; counts attempts, not admission or completion.
Promoted means the seed reached the waiting threshold at selection time. UPLOAD_BYTES_TOTAL Upload bytes counter. WRITE_BUFFER_BYTES Global write buffer size in bytes. WRITE_CACHE_DOWNLOAD_BYTES_TOTAL Download bytes counter in the write cache. WRITE_CACHE_DOWNLOAD_ELAPSED Timer of the downloading task in the write cache. WRITE_CACHE_INFLIGHT_DOWNLOAD Number of inflight download tasks. WRITE_REJECT_TOTAL Counter of rejected write requests. WRITE_ROWS_TOTAL Counter of rows to write. WRITE_STAGE_ELAPSED Elapsed time of each write stage. WRITE_STALLING Number of stalling write requests in each worker. WRITE_STALL_TOTAL Total number of stalled write requests. CACHE_EVICTION_CAUSE 🔒 FILE_TYPE_LABEL File type label. FLUSH_REASON Reason to flush. PARTITION_LABEL Partition label. RECYCLE_TYPE Recycle bin type label. STAGE_LABEL Stage label. STAGING_TYPE Staging dir type label. TYPE_LABEL Type label. WORKER_LABEL Region worker id label. cache_loading_metrics 🔒 cache_page_fetch_metrics 🔒 Records logical byte amplification independently of physical batch reads. cache_page_observer 🔒 Binds shared page/cache I/O metrics while retaining the business hit/miss labels.