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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="API documentation for the Rust `region_server` mod in crate `datanode`."><title>datanode::region_server - Rust</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="datanode" 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="../sidebar-items.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"><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="#">Module region_server</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../datanode/index.html">datanode</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Module region_<wbr>server</a></h2><h3><a href="#modules">Module Items</a></h3><ul class="block"><li><a href="#modules" title="Modules">Modules</a></li><li><a href="#structs" title="Structs">Structs</a></li><li><a href="#enums" title="Enums">Enums</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"><h2 class="in-crate"><a href="../index.html">In crate datanode</a></h2></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"><div class="rustdoc-breadcrumbs"><a href="../index.html">datanode</a></div><h1>Module <span>region_<wbr>server</span>&nbsp;<button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../../src/datanode/region_server.rs.html#15-2769">Source</a> </span></div><h2 id="modules" class="section-header">Modules<a href="#modules" class="anchor">§</a></h2><dl class="item-table"><dt><a class="mod" href="catalog/index.html" title="mod datanode::region_server::catalog">catalog</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt></dl><h2 id="structs" class="section-header">Structs<a href="#structs" class="anchor">§</a></h2><dl class="item-table"><dt><a class="struct" href="struct.DummyCatalogList.html" title="struct datanode::region_server::DummyCatalogList">Dummy<wbr>Catalog<wbr>List</a></dt><dd>Resolve to the given region (specified by [RegionId]) unconditionally.</dd><dt><a class="struct" href="struct.DummyTableProviderFactory.html" title="struct datanode::region_server::DummyTableProviderFactory">Dummy<wbr>Table<wbr>Provider<wbr>Factory</a></dt><dt><a class="struct" href="struct.RegionServer.html" title="struct datanode::region_server::RegionServer">Region<wbr>Server</a></dt><dt><a class="struct" href="struct.RegionServerInner.html" title="struct datanode::region_server::RegionServerInner">Region<wbr>Server<wbr>Inner</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt><dt><a class="struct" href="struct.RegionServerParallelism.html" title="struct datanode::region_server::RegionServerParallelism">Region<wbr>Server<wbr>Parallelism</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt><dt><a class="struct" href="struct.RegionStat.html" title="struct datanode::region_server::RegionStat">Region<wbr>Stat</a></dt><dt><a class="struct" href="struct.RegionWatermarkStream.html" title="struct datanode::region_server::RegionWatermarkStream">Region<wbr>Watermark<wbr>Stream</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt><dd>Wraps a region read stream so terminal metrics can carry the scan-open watermark.</dd></dl><h2 id="enums" class="section-header">Enums<a href="#enums" class="anchor">§</a></h2><dl class="item-table"><dt><a class="enum" href="enum.CurrentEngine.html" title="enum datanode::region_server::CurrentEngine">Current<wbr>Engine</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt><dt><a class="enum" href="enum.RegionAttribute.html" title="enum datanode::region_server::RegionAttribute">Region<wbr>Attribute</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt><dt><a class="enum" href="enum.RegionChange.html" title="enum datanode::region_server::RegionChange">Region<wbr>Change</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt><dt><a class="enum" href="enum.RegionEngineWithStatus.html" title="enum datanode::region_server::RegionEngineWithStatus">Region<wbr>Engine<wbr>With<wbr>Status</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt></dl><h2 id="functions" class="section-header">Functions<a href="#functions" class="anchor">§</a></h2><dl class="item-table"><dt><a class="fn" href="fn.is_metric_engine.html" title="fn datanode::region_server::is_metric_engine">is_<wbr>metric_<wbr>engine</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt><dt><a class="fn" href="fn.parse_region_attribute.html" title="fn datanode::region_server::parse_region_attribute">parse_<wbr>region_<wbr>attribute</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt><dt><a class="fn" href="fn.wrap_flow_region_watermark_stream.html" title="fn datanode::region_server::wrap_flow_region_watermark_stream">wrap_<wbr>flow_<wbr>region_<wbr>watermark_<wbr>stream</a><span title="Restricted Visibility">&nbsp;🔒</span> </dt></dl><h2 id="types" class="section-header">Type Aliases<a href="#types" class="anchor">§</a></h2><dl class="item-table"><dt><a class="type" href="type.TableProviderFactoryRef.html" title="type datanode::region_server::TableProviderFactoryRef">Table<wbr>Provider<wbr>Factory<wbr>Ref</a></dt></dl></section></div></main></body></html>