blob: 42ded784264bb5c289703d21fef9da48b79971e1 [file] [log] [blame]
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<meta name="description" content="A new open source Apache Hadoop ecosystem project, Apache Kudu completes Hadoop's storage layer to enable fast analytics on fast data" />
<meta name="author" content="Cloudera" />
<title>Apache Kudu - Instrumentation in Apache Kudu</title>
<!-- Bootstrap core CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css"
integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7"
crossorigin="anonymous">
<!-- Custom styles for this template -->
<link href="/css/kudu.css" rel="stylesheet"/>
<link href="/css/asciidoc.css" rel="stylesheet"/>
<link rel="shortcut icon" href="/img/logo-favicon.ico" />
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.1/css/font-awesome.min.css" />
<link rel="alternate" type="application/atom+xml"
title="RSS Feed for Apache Kudu blog"
href="/feed.xml" />
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<div class="kudu-site container-fluid">
<!-- Static navbar -->
<nav class="navbar navbar-default">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="logo" href="/"><img
src="//d3dr9sfxru4sde.cloudfront.net/i/k/apachekudu_logo_0716_80px.png"
srcset="//d3dr9sfxru4sde.cloudfront.net/i/k/apachekudu_logo_0716_80px.png 1x, //d3dr9sfxru4sde.cloudfront.net/i/k/apachekudu_logo_0716_160px.png 2x"
alt="Apache Kudu"/></a>
</div>
<div id="navbar" class="collapse navbar-collapse">
<ul class="nav navbar-nav navbar-right">
<li >
<a href="/">Home</a>
</li>
<li >
<a href="/overview.html">Overview</a>
</li>
<li >
<a href="/docs/">Documentation</a>
</li>
<li >
<a href="/releases/">Releases</a>
</li>
<li class="active">
<a href="/blog/">Blog</a>
</li>
<!-- NOTE: this dropdown menu does not appear on Mobile, so don't add anything here
that doesn't also appear elsewhere on the site. -->
<li class="dropdown">
<a href="/community.html" role="button" aria-haspopup="true" aria-expanded="false">Community <span class="caret"></span></a>
<ul class="dropdown-menu">
<li class="dropdown-header">GET IN TOUCH</li>
<li><a class="icon email" href="/community.html">Mailing Lists</a></li>
<li><a class="icon slack" href="https://getkudu-slack.herokuapp.com/">Slack Channel</a></li>
<li role="separator" class="divider"></li>
<li><a href="/community.html#meetups-user-groups-and-conference-presentations">Events and Meetups</a></li>
<li><a href="/committers.html">Project Committers</a></li>
<!--<li><a href="/roadmap.html">Roadmap</a></li>-->
<li><a href="/community.html#contributions">How to Contribute</a></li>
<li role="separator" class="divider"></li>
<li class="dropdown-header">DEVELOPER RESOURCES</li>
<li><a class="icon github" href="https://github.com/apache/incubator-kudu">GitHub</a></li>
<li><a class="icon gerrit" href="http://gerrit.cloudera.org:8080/#/q/status:open+project:kudu">Gerrit Code Review</a></li>
<li><a class="icon jira" href="https://issues.apache.org/jira/browse/KUDU">JIRA Issue Tracker</a></li>
<li role="separator" class="divider"></li>
<li class="dropdown-header">SOCIAL MEDIA</li>
<li><a class="icon twitter" href="https://twitter.com/ApacheKudu">Twitter</a></li>
<li><a href="https://www.reddit.com/r/kudu/">Reddit</a></li>
<li role="separator" class="divider"></li>
<li class="dropdown-header">APACHE SOFTWARE FOUNDATION</li>
<li><a href="https://www.apache.org/security/" target="_blank">Security</a></li>
<li><a href="https://www.apache.org/foundation/sponsorship.html" target="_blank">Sponsorship</a></li>
<li><a href="https://www.apache.org/foundation/thanks.html" target="_blank">Thanks</a></li>
<li><a href="https://www.apache.org/licenses/" target="_blank">License</a></li>
</ul>
</li>
<li >
<a href="/faq.html">FAQ</a>
</li>
</ul><!-- /.nav -->
</div><!-- /#navbar -->
</div><!-- /.container-fluid -->
</nav>
<div class="row header">
<div class="col-lg-12">
<h2><a href="/blog">Apache Kudu Blog</a></h2>
</div>
</div>
<div class="row-fluid">
<div class="col-lg-9">
<article>
<header>
<h1 class="entry-title">Instrumentation in Apache Kudu</h1>
<p class="meta">Posted 10 Jul 2018 by Todd Lipcon</p>
</header>
<div class="entry-content">
<p>Last week, the <a href="http://opentracing.io/">OpenTracing</a> community invited me to
their monthly Google Hangout meetup to give an informal talk on tracing and
instrumentation in Apache Kudu.</p>
<p>While Kudu doesn’t currently support distributed tracing using OpenTracing,
it does have quite a lot of other types of instrumentation, metrics, and
diagnostics logging. The OpenTracing team was interested to hear about some of
the approaches that Kudu has used, and so I gave a brief introduction to topics
including:
<!--more-->
- The Kudu <a href="/docs/administration.html#_diagnostics_logging">diagnostics log</a>
which periodically logs metrics and stack traces.
- The <a href="/docs/troubleshooting.html#kudu_tracing">process-wide tracing</a>
support based on the open source tracing framework implemented by Google Chrome.
- The <a href="/docs/troubleshooting.html#kudu_tracing">stack watchdog</a>
which helps us find various latency outliers and issues in our libraries and
the Linux kernel.
- <a href="/docs/troubleshooting.html#heap_sampling">Heap sampling</a> support
which helps us understand unexpected memory usage.</p>
<p>If you’re interested in learning about these topics and more, check out the video recording
below. My talk spans the first 34 minutes.</p>
<iframe width="800" height="500" src="https://www.youtube.com/embed/qBXwKU6Ubjo?end=2058&amp;start=23">
</iframe>
<p>If you have any questions about this content or about Kudu in general,
<a href="http://kudu.apache.org/community.html">join the community</a></p>
</div>
</article>
</div>
<div class="col-lg-3 recent-posts">
<h3>Recent posts</h3>
<ul>
<li> <a href="/2019/11/20/apache-kudu-1-11-1-release.html">Apache Kudu 1.11.1 released</a> </li>
<li> <a href="/2019/11/20/apache-kudu-1-10-1-release.html">Apache Kudu 1.10.1 released</a> </li>
<li> <a href="/2019/07/09/apache-kudu-1-10-0-release.html">Apache Kudu 1.10.0 Released</a> </li>
<li> <a href="/2019/04/30/location-awareness.html">Location Awareness in Kudu</a> </li>
<li> <a href="/2019/04/22/fine-grained-authorization-with-apache-kudu-and-impala.html">Fine-Grained Authorization with Apache Kudu and Impala</a> </li>
<li> <a href="/2019/03/19/testing-apache-kudu-applications-on-the-jvm.html">Testing Apache Kudu Applications on the JVM</a> </li>
<li> <a href="/2019/03/15/apache-kudu-1-9-0-release.html">Apache Kudu 1.9.0 Released</a> </li>
<li> <a href="/2019/03/05/transparent-hierarchical-storage-management-with-apache-kudu-and-impala.html">Transparent Hierarchical Storage Management with Apache Kudu and Impala</a> </li>
<li> <a href="/2018/12/11/call-for-posts.html">Call for Posts</a> </li>
<li> <a href="/2018/10/26/apache-kudu-1-8-0-released.html">Apache Kudu 1.8.0 Released</a> </li>
<li> <a href="/2018/09/26/index-skip-scan-optimization-in-kudu.html">Index Skip Scan Optimization in Kudu</a> </li>
<li> <a href="/2018/09/11/simplified-pipelines-with-kudu.html">Simplified Data Pipelines with Kudu</a> </li>
<li> <a href="/2018/08/06/getting-started-with-kudu-an-oreilly-title.html">Getting Started with Kudu - an O'Reilly Title</a> </li>
<li> <a href="/2018/07/10/instrumentation-in-kudu.html">Instrumentation in Apache Kudu</a> </li>
<li> <a href="/2018/03/23/apache-kudu-1-7-0-released.html">Apache Kudu 1.7.0 released</a> </li>
</ul>
</div>
</div>
<footer class="footer">
<div class="row">
<div class="col-md-9">
<p class="small">
Copyright &copy; 2019 The Apache Software Foundation.
</p>
<p class="small">
Apache Kudu, Kudu, Apache, the Apache feather logo, and the Apache Kudu
project logo are either registered trademarks or trademarks of The
Apache Software Foundation in the United States and other countries.
</p>
</div>
<div class="col-md-3">
<a class="pull-right" href="https://www.apache.org/events/current-event.html">
<img src="https://www.apache.org/events/current-event-234x60.png"/>
</a>
</div>
</div>
</footer>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script>
// Try to detect touch-screen devices. Note: Many laptops have touch screens.
$(document).ready(function() {
if ("ontouchstart" in document.documentElement) {
$(document.documentElement).addClass("touch");
} else {
$(document.documentElement).addClass("no-touch");
}
});
</script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"
integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS"
crossorigin="anonymous"></script>
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-68448017-1', 'auto');
ga('send', 'pageview');
</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/anchor-js/3.1.0/anchor.js"></script>
<script>
anchors.options = {
placement: 'right',
visible: 'touch',
};
anchors.add();
</script>
</body>
</html>