Google Git
Sign in
apache / bookkeeper / refs/heads/asf-site / . / content / bps / BP-36-stats-documentation-annotation / index.html
blob: 7dd09556e4af066d6c1038232ea9c17d82031e65 [file] [log] [blame]
<!doctype html>
<html lang="en" dir="ltr" class="mdx-wrapper mdx-page plugin-pages plugin-id-default">
<head>
<meta charset="UTF-8">
<meta name="generator" content="Docusaurus v2.4.0">
<title data-rh="true">BP-36: Stats documentation annotation | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/bps/BP-36-stats-documentation-annotation"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docusaurus_tag" content="default"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docsearch:docusaurus_tag" content="default"><meta data-rh="true" property="og:title" content="BP-36: Stats documentation annotation | Apache BookKeeper"><meta data-rh="true" name="description" content="Motivation"><meta data-rh="true" property="og:description" content="Motivation"><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/bps/BP-36-stats-documentation-annotation"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/bps/BP-36-stats-documentation-annotation" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/bps/BP-36-stats-documentation-annotation" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
<link rel="preload" href="/assets/js/runtime~main.1c369ecb.js" as="script">
<link rel="preload" href="/assets/js/main.812b2dbb.js" as="script">
</head>
<body class="navigation-with-keyboard">
<script>!function(){function t(t){document.documentElement.setAttribute("data-theme",t)}var e=function(){var t=null;try{t=new URLSearchParams(window.location.search).get("docusaurus-theme")}catch(t){}return t}()||function(){var t=null;try{t=localStorage.getItem("theme")}catch(t){}return t}();t(null!==e?e:"light")}()</script><div id="__docusaurus">
<div role="region" aria-label="Skip to main content"><a class="skipToContent_fXgn" href="#docusaurus_skipToContent_fallback">Skip to main content</a></div><nav aria-label="Main" class="navbar navbar--fixed-top"><div class="navbar__inner"><div class="navbar__items"><button aria-label="Toggle navigation bar" aria-expanded="false" class="navbar__toggle clean-btn" type="button"><svg width="30" height="30" viewBox="0 0 30 30" aria-hidden="true"><path stroke="currentColor" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" d="M4 7h22M4 15h22M4 23h22"></path></svg></button><a class="navbar__brand" href="/"><div class="navbar__logo"><img src="/img/bk-logo.svg" alt="Apache Bookkeeper" class="themedImage_ToTc themedImage--light_HNdA"><img src="/img/bk-logo.svg" alt="Apache Bookkeeper" class="themedImage_ToTc themedImage--dark_i4oU"></div><b class="navbar__title text--truncate">Apache BookKeeper</b></a><a class="navbar__item navbar__link" href="/docs/overview/">Documentation</a><div class="navbar__item dropdown dropdown--hoverable"><a href="#" aria-haspopup="true" aria-expanded="false" role="button" class="navbar__link">Community</a><ul class="dropdown__menu"><li><a class="dropdown__link" href="/community/mailing-lists">Mailing lists</a></li><li><a class="dropdown__link" href="/community/slack">Slack</a></li><li><a href="https://github.com/apache/bookkeeper/issues" target="_blank" rel="noopener noreferrer" class="dropdown__link">Github issues<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a class="dropdown__link" href="/community/releases">Release management</a></li><li><a class="dropdown__link" href="/community/meeting">Community meetings</a></li><li><a class="dropdown__link" href="/community/contributing">Contribution guide</a></li><li><a class="dropdown__link" href="/community/coding-guide">Coding guide</a></li><li><a class="dropdown__link" href="/community/testing">Testing guide</a></li><li><a class="dropdown__link" href="/community/issue-report">Issue report guide</a></li><li><a class="dropdown__link" href="/community/release-guide">Release guide</a></li><li><a class="dropdown__link" href="/community/presentations">Presentations</a></li><li><a class="dropdown__link" href="/community/bookkeeper-proposals">BookKeeper proposals (BP)</a></li></ul></div><div class="navbar__item dropdown dropdown--hoverable"><a href="#" aria-haspopup="true" aria-expanded="false" role="button" class="navbar__link">Project</a><ul class="dropdown__menu"><li><a class="dropdown__link" href="/project/who">Who are we?</a></li><li><a class="dropdown__link" href="/project/bylaws">Bylaws</a></li><li><a href="https://apache.org/licenses" target="_blank" rel="noopener noreferrer" class="dropdown__link">License<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a class="dropdown__link" href="/project/privacy">Privacy policy</a></li><li><a href="https://www.apache.org/foundation/sponsorship.html" target="_blank" rel="noopener noreferrer" class="dropdown__link">Sponsorship<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a href="https://www.apache.org/foundation/thanks.html" target="_blank" rel="noopener noreferrer" class="dropdown__link">Thanks<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li></ul></div></div><div class="navbar__items navbar__items--right"><div class="navbar__item dropdown dropdown--hoverable dropdown--right"><a class="navbar__link" aria-haspopup="true" aria-expanded="false" role="button" href="/docs/overview/">4.16.5</a><ul class="dropdown__menu"><li><a class="dropdown__link" href="/docs/next/overview/">Next</a></li><li><a class="dropdown__link" href="/docs/overview/">4.16.5</a></li><li><a class="dropdown__link" href="/docs/4.15.5/overview/">4.15.5</a></li><li><a class="dropdown__link" href="/docs/4.14.8/overview/">4.14.8</a></li><li><a class="dropdown__link" href="/docs/4.13.0/overview/">4.13.0</a></li><li><a class="dropdown__link" href="/docs/4.12.1/overview/">4.12.1</a></li><li><a class="dropdown__link" href="/docs/4.11.1/overview/">4.11.1</a></li><li><a class="dropdown__link" href="/docs/4.10.0/overview/">4.10.0</a></li><li><a class="dropdown__link" href="/docs/4.9.2/overview/">4.9.2</a></li><li><a class="dropdown__link" href="/docs/4.8.2/overview/">4.8.2</a></li><li><a class="dropdown__link" href="/docs/4.7.3/overview/">4.7.3</a></li><li><a class="dropdown__link" href="/docs/4.6.2/overview/">4.6.2</a></li><li><a class="dropdown__link" href="/docs/4.5.1/overview/">4.5.1</a></li></ul></div><a class="navbar__item navbar__link" href="/releases">Download</a><div class="toggle_vylO colorModeToggle_DEke"><button class="clean-btn toggleButton_gllP toggleButtonDisabled_aARS" type="button" disabled="" title="Switch between dark and light mode (currently light mode)" aria-label="Switch between dark and light mode (currently light mode)" aria-live="polite"><svg viewBox="0 0 24 24" width="24" height="24" class="lightToggleIcon_pyhR"><path fill="currentColor" d="M12,9c1.65,0,3,1.35,3,3s-1.35,3-3,3s-3-1.35-3-3S10.35,9,12,9 M12,7c-2.76,0-5,2.24-5,5s2.24,5,5,5s5-2.24,5-5 S14.76,7,12,7L12,7z M2,13l2,0c0.55,0,1-0.45,1-1s-0.45-1-1-1l-2,0c-0.55,0-1,0.45-1,1S1.45,13,2,13z M20,13l2,0c0.55,0,1-0.45,1-1 s-0.45-1-1-1l-2,0c-0.55,0-1,0.45-1,1S19.45,13,20,13z M11,2v2c0,0.55,0.45,1,1,1s1-0.45,1-1V2c0-0.55-0.45-1-1-1S11,1.45,11,2z M11,20v2c0,0.55,0.45,1,1,1s1-0.45,1-1v-2c0-0.55-0.45-1-1-1C11.45,19,11,19.45,11,20z M5.99,4.58c-0.39-0.39-1.03-0.39-1.41,0 c-0.39,0.39-0.39,1.03,0,1.41l1.06,1.06c0.39,0.39,1.03,0.39,1.41,0s0.39-1.03,0-1.41L5.99,4.58z M18.36,16.95 c-0.39-0.39-1.03-0.39-1.41,0c-0.39,0.39-0.39,1.03,0,1.41l1.06,1.06c0.39,0.39,1.03,0.39,1.41,0c0.39-0.39,0.39-1.03,0-1.41 L18.36,16.95z M19.42,5.99c0.39-0.39,0.39-1.03,0-1.41c-0.39-0.39-1.03-0.39-1.41,0l-1.06,1.06c-0.39,0.39-0.39,1.03,0,1.41 s1.03,0.39,1.41,0L19.42,5.99z M7.05,18.36c0.39-0.39,0.39-1.03,0-1.41c-0.39-0.39-1.03-0.39-1.41,0l-1.06,1.06 c-0.39,0.39-0.39,1.03,0,1.41s1.03,0.39,1.41,0L7.05,18.36z"></path></svg><svg viewBox="0 0 24 24" width="24" height="24" class="darkToggleIcon_wfgR"><path fill="currentColor" d="M9.37,5.51C9.19,6.15,9.1,6.82,9.1,7.5c0,4.08,3.32,7.4,7.4,7.4c0.68,0,1.35-0.09,1.99-0.27C17.45,17.19,14.93,19,12,19 c-3.86,0-7-3.14-7-7C5,9.07,6.81,6.55,9.37,5.51z M12,3c-4.97,0-9,4.03-9,9s4.03,9,9,9s9-4.03,9-9c0-0.46-0.04-0.92-0.1-1.36 c-0.98,1.37-2.58,2.26-4.4,2.26c-2.98,0-5.4-2.42-5.4-5.4c0-1.81,0.89-3.42,2.26-4.4C12.92,3.04,12.46,3,12,3L12,3z"></path></svg></button></div><div class="searchBox_ZlJk"></div></div></div><div role="presentation" class="navbar-sidebar__backdrop"></div></nav><div id="docusaurus_skipToContent_fallback" class="main-wrapper mainWrapper_z2l0"><main class="container container--fluid margin-vert--lg"><div class="row mdxPageWrapper_j9I6"><div class="col col--8"><article><h1>BP-36: Stats documentation annotation</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="motivation">Motivation<a href="#motivation" class="hash-link" aria-label="Direct link to Motivation" title="Direct link to Motivation">​</a></h3><p>A common ask from people using bookkeeper is how they can monitor bookies and bookkeeper clients, what kind of metrics that bookkeeper exposes
and what are the important metrics. Currently bookkeeper doesn&#x27;t provide any metrics page for guiding people on monitoring bookkeeper services.</p><p>In order to help people on this, we need to provide a few documentation pages about metrics. However if we just write such pages, those pages
can quickly get out-of-dated when code is changed. The proposal here is to seek a programming way for generating metrics related pages.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="public-interfaces">Public Interfaces<a href="#public-interfaces" class="hash-link" aria-label="Direct link to Public Interfaces" title="Direct link to Public Interfaces">​</a></h3><p>Introduced a <code>StatsDoc</code> annotation.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">/**</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * Documenting the stats.</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> */</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">@Retention</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">RetentionPolicy.RUNTIME</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">@Documented</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">public @interface StatsDoc </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> /**</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * The name of the category to group stats together.</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> *</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * @return name of the stats category.</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> */</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> String category</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> default </span><span class="token string" style="color:#e3116c">&quot;&quot;</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> /**</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * The scope of this stats.</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> *</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * @return scope of this stats</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> */</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> String scope</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> default </span><span class="token string" style="color:#e3116c">&quot;&quot;</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> /**</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * The name of this stats</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> *</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * @return name of this stats</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> */</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> String name</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> /**</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * The </span><span class="token builtin class-name">help</span><span class="token plain"> message of this stats</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> *</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * @return </span><span class="token builtin class-name">help</span><span class="token plain"> message of this stats</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> */</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> String help</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> /**</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * The parent metric name.</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> *</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * </span><span class="token operator" style="color:#393A34">&lt;</span><span class="token plain">p</span><span class="token operator" style="color:#393A34">&gt;</span><span class="token plain">It can used </span><span class="token keyword" style="color:#00009f">for</span><span class="token plain"> analyzing the relationships</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * between the metrics, especially </span><span class="token keyword" style="color:#00009f">for</span><span class="token plain"> the latency metrics.</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> *</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * @return the parent metric name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> */</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> default String </span><span class="token function-name function" style="color:#d73a49">parent</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> </span><span class="token builtin class-name">return</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;&quot;</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> /**</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * The metric name of an operation that happens</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * after the operation of this metric.</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> *</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * </span><span class="token operator" style="color:#393A34">&lt;</span><span class="token plain">p</span><span class="token operator" style="color:#393A34">&gt;</span><span class="token plain">similar as </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain">@link </span><span class="token comment" style="color:#999988;font-style:italic">#parent()}, it can be used for analyzing</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * the dependencies between metrics.</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> *</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> * @return the metric name of an operation that happens after the operation of this metric.</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> */</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> default String </span><span class="token function-name function" style="color:#d73a49">happensAfter</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> </span><span class="token builtin class-name">return</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;&quot;</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The <code>StatsDoc</code> annotation provides a way to annotate metrics we added to bookkeeper.</p><ul><li>category: which category that the metric belongs to. e.g. server, or client.</li><li>scope: the scope of the metric. e.g. <code>bookie</code> scope.</li><li>name: the name of the metric.</li><li>help: the description of the metric.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="proposed-changes">Proposed Changes<a href="#proposed-changes" class="hash-link" aria-label="Direct link to Proposed Changes" title="Direct link to Proposed Changes">​</a></h3><p>In addition to the <code>StatsDoc</code> annotation, bookkeeper should provide a tool for generating the metrics yaml file
for documenting all annotated metrics.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">bin/stats-doc-gen</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Example output:</p><div class="language-yaml codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-yaml codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token key atrule" style="color:#00a4db">&quot;server&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;bookie_BOOKIE_READ_ENTRY_BYTES&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;description&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> bytes stats of ReadEntry on a bookie</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;type&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> OPSTATS</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;bookie_WRITE_BYTES&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;description&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> total bytes written to a bookie</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;type&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> COUNTER</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;bookie_BOOKIE_ADD_ENTRY&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;description&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> operations stats of AddEntry on a bookie</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;type&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> OPSTATS</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;bookie_BOOKIE_RECOVERY_ADD_ENTRY&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;description&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> operation stats of RecoveryAddEntry on a bookie</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;type&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> OPSTATS</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;bookie_BOOKIE_ADD_ENTRY_BYTES&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;description&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> bytes stats of AddEntry on a bookie</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;type&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> OPSTATS</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;bookie_BOOKIE_FORCE_LEDGER&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;description&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> total force operations occurred on a bookie</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;type&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> COUNTER</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;bookie_READ_BYTES&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;description&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> total bytes read from a bookie</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;type&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> COUNTER</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;bookie_BOOKIE_READ_ENTRY&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;description&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> operation stats of ReadEntry on a bookie</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token key atrule" style="color:#00a4db">&quot;type&quot;</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">|</span><span class="token punctuation" style="color:#393A34">-</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> OPSTATS</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="compatibility-deprecation-and-migration-plan">Compatibility, Deprecation, and Migration Plan<a href="#compatibility-deprecation-and-migration-plan" class="hash-link" aria-label="Direct link to Compatibility, Deprecation, and Migration Plan" title="Direct link to Compatibility, Deprecation, and Migration Plan">​</a></h3><p>It is a new feature, which doesn&#x27;t have any compatibility impacts.</p><p>There is nothing deprecated.</p><p>There is nothing to migrate.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="test-plan">Test Plan<a href="#test-plan" class="hash-link" aria-label="Direct link to Test Plan" title="Direct link to Test Plan">​</a></h3><p>Existing testing is good enough to cover code changes. No new tests are needed.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="rejected-alternatives">Rejected Alternatives<a href="#rejected-alternatives" class="hash-link" aria-label="Direct link to Rejected Alternatives" title="Direct link to Rejected Alternatives">​</a></h3><p>Alternatively, we have to manually maintain the metrics page and update each time when a new metric is added.</p></article></div><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#motivation" class="table-of-contents__link toc-highlight">Motivation</a></li><li><a href="#public-interfaces" class="table-of-contents__link toc-highlight">Public Interfaces</a></li><li><a href="#proposed-changes" class="table-of-contents__link toc-highlight">Proposed Changes</a></li><li><a href="#compatibility-deprecation-and-migration-plan" class="table-of-contents__link toc-highlight">Compatibility, Deprecation, and Migration Plan</a></li><li><a href="#test-plan" class="table-of-contents__link toc-highlight">Test Plan</a></li><li><a href="#rejected-alternatives" class="table-of-contents__link toc-highlight">Rejected Alternatives</a></li></ul></div></div></div></main></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Documentation</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/docs/overview">Overview</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/getting-started/installation">Getting started</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/deployment/manual">Deployment</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/admin/bookies">Administration</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/api/overview">API</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/security/overview">Security</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/development/protocol">Development</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/reference/config">Reference</a></li></ul></div><div class="col footer__col"><div class="footer__title">Community</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/community/mailing-lists">Mailing lists</a></li><li class="footer__item"><a class="footer__link-item" href="/community/slack">Slack</a></li><li class="footer__item"><a href="https://github.com/apache/bookkeeper" target="_blank" rel="noopener noreferrer" class="footer__link-item">Github<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li class="footer__item"><a href="https://twitter.com/asfbookkeeper" target="_blank" rel="noopener noreferrer" class="footer__link-item">Twitter<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li></ul></div><div class="col footer__col"><div class="footer__title">Project</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/project/who">Who are we?</a></li><li class="footer__item"><a class="footer__link-item" href="/project/bylaws">Bylaws</a></li><li class="footer__item"><a href="https://apache.org/licenses" target="_blank" rel="noopener noreferrer" class="footer__link-item">License<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li class="footer__item"><a class="footer__link-item" href="/project/privacy">Privacy policy</a></li><li class="footer__item"><a href="https://www.apache.org/foundation/sponsorship.html" target="_blank" rel="noopener noreferrer" class="footer__link-item">Sponsorship<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li class="footer__item"><a href="https://www.apache.org/foundation/thanks.html" target="_blank" rel="noopener noreferrer" class="footer__link-item">Thanks<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright"><footer class="footer">
<div class="container">
<div class="content has-text-centered">
<p>
Copyright &copy; 2016 - 2024 <a href="https://www.apache.org/">The Apache Software Foundation</a>,<br> licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, version 2.0</a>.
</p>
<p>
Apache BookKeeper, BookKeeper®, Apache®, the Apache feature logo, and the Apache BookKeeper logo are either registered trademarks or trademarks of The Apache Software Foundation.
</p>
</div>
</div>
</footer>
</div></div></div></footer></div>
<script src="/assets/js/runtime~main.1c369ecb.js"></script>
<script src="/assets/js/main.812b2dbb.js"></script>
</body>
</html>