system.metrics

[MergeTreePartsCleanerThreads](#mergetreepartscleanerthreads)- [MergeTreePartsCleanerThreadsActive](#mergetreepartscleanerthreadsactive)- [MergeTreePartsCleanerThreadsScheduled](#mergetreepartscleanerthreadsscheduled)- [MergeTreePartsLoaderThreads](#mergetreepartsloaderthreads)- [MergeTreePartsLoaderThreadsActive](#mergetreepartsloaderthreadsactive)- [MergeTreePartsLoaderThreadsScheduled](#mergetreepartsloaderthreadsscheduled)- [MergeTreeReadTaskRequestsSent](#mergetreereadtaskrequestssent)- [MergeTreeSnapshotCommitThreads](#mergetreesnapshotcommitthreads)- [MergeTreeSnapshotCommitThreadsActive](#mergetreesnapshotcommitthreadsactive)- [MergeTreeSnapshotCommitThreadsScheduled](#mergetreesnapshotcommitthreadsscheduled)- [MergeTreeSubcolumnsReaderThreads](#mergetreesubcolumnsreaderthreads)- [MergeTreeSubcolumnsReaderThreadsActive](#mergetreesubcolumnsreaderthreadsactive)- [MergeTreeSubcolumnsReaderThreadsScheduled](#mergetreesubcolumnsreaderthreadsscheduled)- [MergeTreeUnexpectedPartsLoaderThreads](#mergetreeunexpectedpartsloaderthreads)- [MergeTreeUnexpectedPartsLoaderThreadsActive](#mergetreeunexpectedpartsloaderthreadsactive)- [MergeTreeUnexpectedPartsLoaderThreadsScheduled](#mergetreeunexpectedpartsloaderthreadsscheduled)- [MergesMutationsMemoryTracking](#mergesmutationsmemorytracking)- [MetadataFromKeeperCacheObjects](#metadatafromkeepercacheobjects)- [Move](#move)- [MySQLConnection](#mysqlconnection)- [NamedCollection](#namedcollection)- [NetworkReceive](#networkreceive)- [NetworkSend](#networksend)- [ObjectStorageAzureThreads](#objectstorageazurethreads)- [ObjectStorageAzureThreadsActive](#objectstorageazurethreadsactive)- [ObjectStorageAzureThreadsScheduled](#objectstorageazurethreadsscheduled)- [ObjectStorageQueueMetadataCacheSizeBytes](#objectstoragequeuemetadatacachesizebytes)- [ObjectStorageQueueMetadataCacheSizeElements](#objectstoragequeuemetadatacachesizeelements)- [ObjectStorageQueueRegisteredServers](#objectstoragequeueregisteredservers)- [ObjectStorageQueueShutdownThreads](#objectstoragequeueshutdownthreads)- [ObjectStorageQueueShutdownThreadsActive](#objectstoragequeueshutdownthreadsactive)- [ObjectStorageQueueShutdownThreadsScheduled](#objectstoragequeueshutdownthreadsscheduled)- [ObjectStorageS3Threads](#objectstorages3threads)- [ObjectStorageS3ThreadsActive](#objectstorages3threadsactive)- [ObjectStorageS3ThreadsScheduled](#objectstorages3threadsscheduled)- [OpenFileForRead](#openfileforread)- [OpenFileForWrite](#openfileforwrite)- [OutdatedPartsLoadingThreads](#outdatedpartsloadingthreads)- [OutdatedPartsLoadingThreadsActive](#outdatedpartsloadingthreadsactive)- [OutdatedPartsLoadingThreadsScheduled](#outdatedpartsloadingthreadsscheduled)- [PageCacheBytes](#pagecachebytes)- [PageCacheCells](#pagecachecells)- [ParallelCompressedWriteBufferThreads](#parallelcompressedwritebufferthreads)- [ParallelCompressedWriteBufferWait](#parallelcompressedwritebufferwait)- [ParallelFormattingOutputFormatThreads](#parallelformattingoutputformatthreads)- [ParallelFormattingOutputFormatThreadsActive](#parallelformattingoutputformatthreadsactive)- [ParallelFormattingOutputFormatThreadsScheduled](#parallelformattingoutputformatthreadsscheduled)- [ParallelWithQueryActiveThreads](#parallelwithqueryactivethreads)- [ParallelWithQueryScheduledThreads](#parallelwithqueryscheduledthreads)- [ParallelWithQueryThreads](#parallelwithquerythreads)- [ParquetEncoderThreads](#parquetencoderthreads)- [ParquetEncoderThreadsActive](#parquetencoderthreadsactive)- [ParquetEncoderThreadsScheduled](#parquetencoderthreadsscheduled)- [ParquetMetadataCacheBytes](#parquetmetadatacachebytes)- [ParquetMetadataCacheFiles](#parquetmetadatacachefiles)- [PartMutation](#partmutation)- [PartsActive](#partsactive)- [PartsCommitted](#partscommitted)- [PartsCompact](#partscompact)- [PartsDeleteOnDestroy](#partsdeleteondestroy)- [PartsDeleting](#partsdeleting)- [PartsOutdated](#partsoutdated)- [PartsPreActive](#partspreactive)- [PartsPreCommitted](#partsprecommitted)- [PartsTemporary](#partstemporary)- [PartsWide](#partswide)- [PendingAsyncInsert](#pendingasyncinsert)- [PolygonDictionaryThreads](#polygondictionarythreads)- [PolygonDictionaryThreadsActive](#polygondictionarythreadsactive)- [PolygonDictionaryThreadsScheduled](#polygondictionarythreadsscheduled)- [PostgreSQLConnection](#postgresqlconnection)- [PrimaryIndexCacheBytes](#primaryindexcachebytes)- [PrimaryIndexCacheFiles](#primaryindexcachefiles)- [Query](#query)- [QueryCacheBytes](#querycachebytes)- [QueryCacheEntries](#querycacheentries)- [QueryConditionCacheBytes](#queryconditioncachebytes)- [QueryConditionCacheEntries](#queryconditioncacheentries)- [QueryNonInternal](#querynoninternal)- [QueryPipelineExecutorThreads](#querypipelineexecutorthreads)- [QueryPipelineExecutorThreadsActive](#querypipelineexecutorthreadsactive)- [QueryPipelineExecutorThreadsScheduled](#querypipelineexecutorthreadsscheduled)- [QueryPreempted](#querypreempted)- [QueryThread](#querythread)- [RWLockActiveReaders](#rwlockactivereaders)- [RWLockActiveWriters](#rwlockactivewriters)- [RWLockWaitingReaders](#rwlockwaitingreaders)- [RWLockWaitingWriters](#rwlockwaitingwriters)- [Read](#read)- [ReadTaskRequestsSent](#readtaskrequestssent)- [ReadonlyDisks](#readonlydisks)- [ReadonlyReplica](#readonlyreplica)- [RefreshableViews](#refreshableviews)- [RefreshingViews](#refreshingviews)- [RemoteRead](#remoteread)- [ReplicaReady](#replicaready)- [ReplicatedChecks](#replicatedchecks)- [ReplicatedFetch](#replicatedfetch)- [ReplicatedSend](#replicatedsend)- [RestartReplicaThreads](#restartreplicathreads)- [RestartReplicaThreadsActive](#restartreplicathreadsactive)- [RestartReplicaThreadsScheduled](#restartreplicathreadsscheduled)- [RestoreThreads](#restorethreads)- [RestoreThreadsActive](#restorethreadsactive)- [RestoreThreadsScheduled](#restorethreadsscheduled)- [Revision](#revision)- [S3CachedCredentialsProviders](#s3cachedcredentialsproviders)- [S3Requests](#s3requests)- [SchedulerIOReadScheduled](#schedulerioreadscheduled)- [SchedulerIOWriteScheduled](#scheduleriowritescheduled)- [SendExternalTables](#sendexternaltables)- [SendScalars](#sendscalars)- [SerializationCacheBytesInMemory](#serializationcachebytesinmemory)- [SerializationCacheBytesInMemoryAllocated](#serializationcachebytesinmemoryallocated)- [SerializationCacheCount](#serializationcachecount)- [SharedCatalogDropDetachLocalTablesErrors](#sharedcatalogdropdetachlocaltableserrors)- [SharedCatalogDropLocalThreads](#sharedcatalogdroplocalthreads)- [SharedCatalogDropLocalThreadsActive](#sharedcatalogdroplocalthreadsactive)- [SharedCatalogDropLocalThreadsScheduled](#sharedcatalogdroplocalthreadsscheduled)- [SharedCatalogDropZooKeeperThreads](#sharedcatalogdropzookeeperthreads)- [SharedCatalogDropZooKeeperThreadsActive](#sharedcatalogdropzookeeperthreadsactive)- [SharedCatalogDropZooKeeperThreadsScheduled](#sharedcatalogdropzookeeperthreadsscheduled)- [SharedCatalogNumberOfObjectsInState](#sharedcatalognumberofobjectsinstate)- [SharedCatalogStateApplicationThreads](#sharedcatalogstateapplicationthreads)- [SharedCatalogStateApplicationThreadsActive](#sharedcatalogstateapplicationthreadsactive)- [SharedCatalogStateApplicationThreadsScheduled](#sharedcatalogstateapplicationthreadsscheduled)- [SharedDatabaseCatalogTablesInLocalDropDetachQueue](#shareddatabasecatalogtablesinlocaldropdetachqueue)- [SharedMergeTreeAssignedCurrentParts](#sharedmergetreeassignedcurrentparts)- [SharedMergeTreeBrokenCondemnedPartsInKeeper](#sharedmergetreebrokencondemnedpartsinkeeper)- [SharedMergeTreeCondemnedPartsInKeeper](#sharedmergetreecondemnedpartsinkeeper)- [SharedMergeTreeFetch](#sharedmergetreefetch)- [SharedMergeTreeMaxActiveReplicas](#sharedmergetreemaxactivereplicas)- [SharedMergeTreeMaxInactiveReplicas](#sharedmergetreemaxinactivereplicas)- [SharedMergeTreeMaxPartitions](#sharedmergetreemaxpartitions)- [SharedMergeTreeMaxReplicas](#sharedmergetreemaxreplicas)- [SharedMergeTreeMinActiveReplicas](#sharedmergetreeminactivereplicas)- [SharedMergeTreeMinInactiveReplicas](#sharedmergetreemininactivereplicas)- [SharedMergeTreeMinPartitions](#sharedmergetreeminpartitions)-