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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="List of all items in this crate"><title>List of all items in this crate</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-17e0aaed.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="metric_engine" data-themes="" data-resource-suffix="" data-rustdoc-version="1.96.0-nightly (ac7f9ec7d 2026-03-20)" data-channel="nightly" data-search-js="search-63369b7b.js" data-stringdex-js="stringdex-2da4960a.js" data-settings-js="settings-170eb4bf.js" ><script src="../static.files/storage-41dd4d93.js"></script><script defer src="../static.files/main-5013f961.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-f7c3ffd8.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-044be391.svg"></head><body class="rustdoc mod sys"><a class="skip-main-content" href="#main-content">Skip to main content</a><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">All</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../metric_engine/index.html">metric_<wbr>engine</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h3><a href="#structs">Crate Items</a></h3><ul class="block"><li><a href="#structs" title="Structs">Structs</a></li><li><a href="#enums" title="Enums">Enums</a></li><li><a href="#constants" title="Constants">Constants</a></li><li><a href="#functions" title="Functions">Functions</a></li><li><a href="#types" title="Type Aliases">Type Aliases</a></li></ul></section><div id="rustdoc-modnav"></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content" tabindex="-1"><div class="main-heading"><h1>List of all items</h1><rustdoc-toolbar></rustdoc-toolbar></div><h3 id="structs">Structs</h3><ul class="all-items"><li><a href="batch_modifier/struct.TagColumnInfo.html">batch_modifier::TagColumnInfo</a></li><li><a href="config/struct.EngineConfig.html">config::EngineConfig</a></li><li><a href="data_region/struct.DataRegion.html">data_region::DataRegion</a></li><li><a href="engine/struct.MetricEngine.html">engine::MetricEngine</a></li><li><a href="engine/struct.MetricEngineInner.html">engine::MetricEngineInner</a></li><li><a href="engine/options/struct.PhysicalRegionOptions.html">engine::options::PhysicalRegionOptions</a></li><li><a href="engine/state/struct.MetricEngineState.html">engine::state::MetricEngineState</a></li><li><a href="engine/state/struct.PhysicalRegionState.html">engine::state::PhysicalRegionState</a></li><li><a href="error/struct.AddingFieldColumnSnafu.html">error::AddingFieldColumnSnafu</a></li><li><a href="error/struct.BatchCatchupMitoRegionSnafu.html">error::BatchCatchupMitoRegionSnafu</a></li><li><a href="error/struct.BatchOpenMitoRegionSnafu.html">error::BatchOpenMitoRegionSnafu</a></li><li><a href="error/struct.CacheGetSnafu.html">error::CacheGetSnafu</a></li><li><a href="error/struct.CloseMitoRegionSnafu.html">error::CloseMitoRegionSnafu</a></li><li><a href="error/struct.CollectRecordBatchStreamSnafu.html">error::CollectRecordBatchStreamSnafu</a></li><li><a href="error/struct.ColumnNotFoundSnafu.html">error::ColumnNotFoundSnafu</a></li><li><a href="error/struct.ColumnTypeMismatchSnafu.html">error::ColumnTypeMismatchSnafu</a></li><li><a href="error/struct.ConflictRegionOptionSnafu.html">error::ConflictRegionOptionSnafu</a></li><li><a href="error/struct.CreateDefaultSnafu.html">error::CreateDefaultSnafu</a></li><li><a href="error/struct.CreateMitoRegionSnafu.html">error::CreateMitoRegionSnafu</a></li><li><a href="error/struct.DecodeColumnValueSnafu.html">error::DecodeColumnValueSnafu</a></li><li><a href="error/struct.DeserializeColumnMetadataSnafu.html">error::DeserializeColumnMetadataSnafu</a></li><li><a href="error/struct.EncodePrimaryKeySnafu.html">error::EncodePrimaryKeySnafu</a></li><li><a href="error/struct.ForbiddenPhysicalAlterSnafu.html">error::ForbiddenPhysicalAlterSnafu</a></li><li><a href="error/struct.InternalColumnOccupiedSnafu.html">error::InternalColumnOccupiedSnafu</a></li><li><a href="error/struct.InvalidMetadataSnafu.html">error::InvalidMetadataSnafu</a></li><li><a href="error/struct.InvalidRequestSnafu.html">error::InvalidRequestSnafu</a></li><li><a href="error/struct.LogicalRegionNotFoundSnafu.html">error::LogicalRegionNotFoundSnafu</a></li><li><a href="error/struct.MetricManifestInfoSnafu.html">error::MetricManifestInfoSnafu</a></li><li><a href="error/struct.MissingFilesSnafu.html">error::MissingFilesSnafu</a></li><li><a href="error/struct.MissingRegionOptionSnafu.html">error::MissingRegionOptionSnafu</a></li><li><a href="error/struct.MitoCopyRegionFromOperationSnafu.html">error::MitoCopyRegionFromOperationSnafu</a></li><li><a href="error/struct.MitoEditRegionSnafu.html">error::MitoEditRegionSnafu</a></li><li><a href="error/struct.MitoEnterStagingOperationSnafu.html">error::MitoEnterStagingOperationSnafu</a></li><li><a href="error/struct.MitoFlushOperationSnafu.html">error::MitoFlushOperationSnafu</a></li><li><a href="error/struct.MitoReadOperationSnafu.html">error::MitoReadOperationSnafu</a></li><li><a href="error/struct.MitoSyncOperationSnafu.html">error::MitoSyncOperationSnafu</a></li><li><a href="error/struct.MitoWriteOperationSnafu.html">error::MitoWriteOperationSnafu</a></li><li><a href="error/struct.MultipleFieldColumnSnafu.html">error::MultipleFieldColumnSnafu</a></li><li><a href="error/struct.NoFieldColumnSnafu.html">error::NoFieldColumnSnafu</a></li><li><a href="error/struct.NoOpenRegionResultSnafu.html">error::NoOpenRegionResultSnafu</a></li><li><a href="error/struct.OpenMitoRegionSnafu.html">error::OpenMitoRegionSnafu</a></li><li><a href="error/struct.ParseRegionIdSnafu.html">error::ParseRegionIdSnafu</a></li><li><a href="error/struct.ParseRegionOptionsSnafu.html">error::ParseRegionOptionsSnafu</a></li><li><a href="error/struct.PhysicalRegionBusySnafu.html">error::PhysicalRegionBusySnafu</a></li><li><a href="error/struct.PhysicalRegionNotFoundSnafu.html">error::PhysicalRegionNotFoundSnafu</a></li><li><a href="error/struct.SerializeColumnMetadataSnafu.html">error::SerializeColumnMetadataSnafu</a></li><li><a href="error/struct.SerializeRegionManifestInfoSnafu.html">error::SerializeRegionManifestInfoSnafu</a></li><li><a href="error/struct.SetSkippingIndexOptionSnafu.html">error::SetSkippingIndexOptionSnafu</a></li><li><a href="error/struct.StartRepeatedTaskSnafu.html">error::StartRepeatedTaskSnafu</a></li><li><a href="error/struct.TableIdCountMismatchSnafu.html">error::TableIdCountMismatchSnafu</a></li><li><a href="error/struct.UnexpectedRequestSnafu.html">error::UnexpectedRequestSnafu</a></li><li><a href="error/struct.UnsupportedAlterKindSnafu.html">error::UnsupportedAlterKindSnafu</a></li><li><a href="error/struct.UnsupportedRegionRequestSnafu.html">error::UnsupportedRegionRequestSnafu</a></li><li><a href="error/struct.UnsupportedRemapManifestsRequestSnafu.html">error::UnsupportedRemapManifestsRequestSnafu</a></li><li><a href="error/struct.UnsupportedSyncRegionFromRequestSnafu.html">error::UnsupportedSyncRegionFromRequestSnafu</a></li><li><a href="metadata_region/struct.MetadataRegion.html">metadata_region::MetadataRegion</a></li><li><a href="metadata_region/struct.RegionMetadataCacheEntry.html">metadata_region::RegionMetadataCacheEntry</a></li><li><a href="metrics/struct.FORBIDDEN_OPERATION_COUNT.html">metrics::FORBIDDEN_OPERATION_COUNT</a></li><li><a href="metrics/struct.LOGICAL_REGION_COUNT.html">metrics::LOGICAL_REGION_COUNT</a></li><li><a href="metrics/struct.MITO_DDL_DURATION.html">metrics::MITO_DDL_DURATION</a></li><li><a href="metrics/struct.MITO_OPERATION_ELAPSED.html">metrics::MITO_OPERATION_ELAPSED</a></li><li><a href="metrics/struct.PHYSICAL_COLUMN_COUNT.html">metrics::PHYSICAL_COLUMN_COUNT</a></li><li><a href="metrics/struct.PHYSICAL_REGION_COUNT.html">metrics::PHYSICAL_REGION_COUNT</a></li><li><a href="repeated_task/struct.FlushMetadataRegionTask.html">repeated_task::FlushMetadataRegionTask</a></li><li><a href="row_modifier/struct.IterIndex.html">row_modifier::IterIndex</a></li><li><a href="row_modifier/struct.RowIter.html">row_modifier::RowIter</a></li><li><a href="row_modifier/struct.RowModifier.html">row_modifier::RowModifier</a></li><li><a href="row_modifier/struct.RowsIter.html">row_modifier::RowsIter</a></li><li><a href="row_modifier/struct.TsidGenerator.html">row_modifier::TsidGenerator</a></li><li><a href="row_modifier/struct.ValueIndex.html">row_modifier::ValueIndex</a></li></ul><h3 id="enums">Enums</h3><ul class="all-items"><li><a href="engine/options/enum.IndexOptions.html">engine::options::IndexOptions</a></li><li><a href="error/enum.Error.html">error::Error</a></li><li><a href="row_modifier/enum.TableIdInput.html">row_modifier::TableIdInput</a></li></ul><h3 id="functions">Functions</h3><ul class="all-items"><li><a href="batch_modifier/fn.build_tag_arrays.html">batch_modifier::build_tag_arrays</a></li><li><a href="batch_modifier/fn.compute_tsid_array.html">batch_modifier::compute_tsid_array</a></li><li><a href="batch_modifier/fn.modify_batch_sparse.html">batch_modifier::modify_batch_sparse</a></li><li><a href="engine/alter/extract_new_columns/fn.extract_new_columns.html">engine::alter::extract_new_columns::extract_new_columns</a></li><li><a href="engine/alter/validate/fn.validate_alter_region_requests.html">engine::alter::validate::validate_alter_region_requests</a></li><li><a href="engine/bulk_insert/fn.record_batch_to_ipc.html">engine::bulk_insert::record_batch_to_ipc</a></li><li><a href="engine/bulk_insert/fn.record_batch_to_rows.html">engine::bulk_insert::record_batch_to_rows</a></li><li><a href="engine/create/extract_new_columns/fn.extract_new_columns.html">engine::create::extract_new_columns::extract_new_columns</a></li><li><a href="engine/create/fn.group_create_logical_region_requests_by_physical_region_id.html">engine::create::group_create_logical_region_requests_by_physical_region_id</a></li><li><a href="engine/create/fn.is_metric_name_col.html">engine::create::is_metric_name_col</a></li><li><a href="engine/create/fn.is_tsid_col.html">engine::create::is_tsid_col</a></li><li><a href="engine/create/fn.parse_physical_region_id.html">engine::create::parse_physical_region_id</a></li><li><a href="engine/create/fn.region_options_for_metadata_region.html">engine::create::region_options_for_metadata_region</a></li><li><a href="engine/create/fn.table_id_col.html">engine::create::table_id_col</a></li><li><a href="engine/create/fn.tsid_col.html">engine::create::tsid_col</a></li><li><a href="engine/options/fn.set_data_region_options.html">engine::options::set_data_region_options</a></li><li><a href="metadata_region/fn.decode_batch_stream.html">metadata_region::decode_batch_stream</a></li><li><a href="metadata_region/fn.decode_record_batch_to_key.html">metadata_region::decode_record_batch_to_key</a></li><li><a href="metadata_region/fn.decode_record_batch_to_key_and_value.html">metadata_region::decode_record_batch_to_key_and_value</a></li><li><a href="metadata_region/fn.get_all_with_prefix.html">metadata_region::get_all_with_prefix</a></li><li><a href="utils/fn.append_manifest_info.html">utils::append_manifest_info</a></li><li><a href="utils/fn.encode_manifest_info_to_extensions.html">utils::encode_manifest_info_to_extensions</a></li><li><a href="utils/fn.get_region_statistic.html">utils::get_region_statistic</a></li><li><a href="utils/fn.to_data_region_id.html">utils::to_data_region_id</a></li><li><a href="utils/fn.to_metadata_region_id.html">utils::to_metadata_region_id</a></li></ul><h3 id="types">Type Aliases</h3><ul class="all-items"><li><a href="error/type.Result.html">error::Result</a></li></ul><h3 id="constants">Constants</h3><ul class="all-items"><li><a href="config/constant.DEFAULT_FLUSH_METADATA_REGION_INTERVAL.html">config::DEFAULT_FLUSH_METADATA_REGION_INTERVAL</a></li><li><a href="engine/create/constant.DEFAULT_TABLE_ID_SKIPPING_INDEX_FALSE_POSITIVE_RATE.html">engine::create::DEFAULT_TABLE_ID_SKIPPING_INDEX_FALSE_POSITIVE_RATE</a></li><li><a href="engine/create/constant.DEFAULT_TABLE_ID_SKIPPING_INDEX_GRANULARITY.html">engine::create::DEFAULT_TABLE_ID_SKIPPING_INDEX_GRANULARITY</a></li><li><a href="engine/options/constant.DEFAULT_DATA_REGION_COMPACTION_TIME_WINDOW.html">engine::options::DEFAULT_DATA_REGION_COMPACTION_TIME_WINDOW</a></li><li><a href="engine/options/constant.SEG_ROW_COUNT_FOR_DATA_REGION.html">engine::options::SEG_ROW_COUNT_FOR_DATA_REGION</a></li><li><a href="metadata_region/constant.CACHE_TTL.html">metadata_region::CACHE_TTL</a></li><li><a href="metadata_region/constant.COLUMN_PREFIX.html">metadata_region::COLUMN_PREFIX</a></li><li><a href="metadata_region/constant.MAX_CACHE_SIZE.html">metadata_region::MAX_CACHE_SIZE</a></li><li><a href="metadata_region/constant.REGION_PREFIX.html">metadata_region::REGION_PREFIX</a></li><li><a href="metrics/constant.OPERATION_LABEL.html">metrics::OPERATION_LABEL</a></li></ul></section></div></main></body></html>