<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Tutorial: Load batch data using Apache Hadoop · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/latest/tutorials/tutorial-batch-hadoop.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="&lt;!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content="24.0.1" /><meta property="og:title" content="Tutorial: Load batch data using Apache Hadoop · Apache Druid"/><meta property="og:type" content="website"/><meta property="og:url" content="https://druid.apache.org/index.html"/><meta property="og:description" content="&lt;!--"/><meta property="og:image" content="https://druid.apache.org/img/druid_nav.png"/><meta name="twitter:card" content="summary"/><meta name="twitter:image" content="https://druid.apache.org/img/druid_nav.png"/><link rel="shortcut icon" href="/img/favicon.png"/><link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/docsearch.js@2/dist/cdn/docsearch.min.css"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/default.min.css"/><script async="" src="https://www.googletagmanager.com/gtag/js?id=UA-131010415-1"></script><script>
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<p>This tutorial shows you how to load data files into Apache Druid using a remote Hadoop cluster.</p>
<p>For this tutorial, we'll assume that you've already completed the previous
<a href="/docs/latest/tutorials/tutorial-batch.html">batch ingestion tutorial</a> using Druid's native batch ingestion system and are using the
<code>micro-quickstart</code> single-machine configuration as described in the <a href="/docs/latest/tutorials/index.html">quickstart</a>.</p>
<h2><a class="anchor" aria-hidden="true" id="install-docker"></a><a href="#install-docker" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Install Docker</h2>
<p>This tutorial requires <a href="https://docs.docker.com/install/">Docker</a> to be installed on the tutorial machine.</p>
<p>Once the Docker install is complete, please proceed to the next steps in the tutorial.</p>
<h2><a class="anchor" aria-hidden="true" id="build-the-hadoop-docker-image"></a><a href="#build-the-hadoop-docker-image" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Build the Hadoop docker image</h2>
<p>For this tutorial, we've provided a Dockerfile for a Hadoop 2.8.5 cluster, which we'll use to run the batch indexing task.</p>
<p>This Dockerfile and related files are located at <code>quickstart/tutorial/hadoop/docker</code>.</p>
<p>From the apache-druid-24.0.1 package root, run the following commands to build a Docker image named &quot;druid-hadoop-demo&quot; with version tag &quot;2.8.5&quot;:</p>
<pre><code class="hljs css language-bash"><span class="hljs-built_in">cd</span> quickstart/tutorial/hadoop/docker
docker build -t druid-hadoop-demo:2.8.5 .
</code></pre>
<p>This will start building the Hadoop image. Once the image build is done, you should see the message <code>Successfully tagged druid-hadoop-demo:2.8.5</code> printed to the console.</p>
<h2><a class="anchor" aria-hidden="true" id="setup-the-hadoop-docker-cluster"></a><a href="#setup-the-hadoop-docker-cluster" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Setup the Hadoop docker cluster</h2>
<h3><a class="anchor" aria-hidden="true" id="create-temporary-shared-directory"></a><a href="#create-temporary-shared-directory" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Create temporary shared directory</h3>
<p>We'll need a shared folder between the host and the Hadoop container for transferring some files.</p>
<p>Let's create some folders under <code>/tmp</code>, we will use these later when starting the Hadoop container:</p>
<pre><code class="hljs css language-bash">mkdir -p /tmp/shared
mkdir -p /tmp/shared/hadoop_xml
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="configure-etchosts"></a><a href="#configure-etchosts" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Configure /etc/hosts</h3>
<p>On the host machine, add the following entry to <code>/etc/hosts</code>:</p>
<pre><code class="hljs"><span class="hljs-number">127.0.0.1</span> druid-hadoop-demo
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="start-the-hadoop-container"></a><a href="#start-the-hadoop-container" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Start the Hadoop container</h3>
<p>Once the <code>/tmp/shared</code> folder has been created and the <code>etc/hosts</code> entry has been added, run the following command to start the Hadoop container.</p>
<pre><code class="hljs css language-bash">docker run -it  -h druid-hadoop-demo --name druid-hadoop-demo -p 2049:2049 -p 2122:2122 -p 8020:8020 -p 8021:8021 -p 8030:8030 -p 8031:8031 -p 8032:8032 -p 8033:8033 -p 8040:8040 -p 8042:8042 -p 8088:8088 -p 8443:8443 -p 9000:9000 -p 10020:10020 -p 19888:19888 -p 34455:34455 -p 49707:49707 -p 50010:50010 -p 50020:50020 -p 50030:50030 -p 50060:50060 -p 50070:50070 -p 50075:50075 -p 50090:50090 -p 51111:51111 -v /tmp/shared:/shared druid-hadoop-demo:2.8.5 /etc/bootstrap.sh -bash
</code></pre>
<p>Once the container is started, your terminal will attach to a bash shell running inside the container:</p>
<pre><code class="hljs css language-bash">Starting sshd:                                             [  OK  ]
18/07/26 17:27:15 WARN util.NativeCodeLoader: Unable to load native-hadoop library <span class="hljs-keyword">for</span> your platform... using <span class="hljs-built_in">builtin</span>-java classes <span class="hljs-built_in">where</span> applicable
Starting namenodes on [druid-hadoop-demo]
druid-hadoop-demo: starting namenode, logging to /usr/<span class="hljs-built_in">local</span>/hadoop/logs/hadoop-root-namenode-druid-hadoop-demo.out
localhost: starting datanode, logging to /usr/<span class="hljs-built_in">local</span>/hadoop/logs/hadoop-root-datanode-druid-hadoop-demo.out
Starting secondary namenodes [0.0.0.0]
0.0.0.0: starting secondarynamenode, logging to /usr/<span class="hljs-built_in">local</span>/hadoop/logs/hadoop-root-secondarynamenode-druid-hadoop-demo.out
18/07/26 17:27:31 WARN util.NativeCodeLoader: Unable to load native-hadoop library <span class="hljs-keyword">for</span> your platform... using <span class="hljs-built_in">builtin</span>-java classes <span class="hljs-built_in">where</span> applicable
starting yarn daemons
starting resourcemanager, logging to /usr/<span class="hljs-built_in">local</span>/hadoop/logs/yarn--resourcemanager-druid-hadoop-demo.out
localhost: starting nodemanager, logging to /usr/<span class="hljs-built_in">local</span>/hadoop/logs/yarn-root-nodemanager-druid-hadoop-demo.out
starting historyserver, logging to /usr/<span class="hljs-built_in">local</span>/hadoop/logs/mapred--historyserver-druid-hadoop-demo.out
bash-4.1<span class="hljs-comment">#</span>
</code></pre>
<p>The <code>Unable to load native-hadoop library for your platform... using builtin-java classes where applicable</code> warning messages can be safely ignored.</p>
<h4><a class="anchor" aria-hidden="true" id="accessing-the-hadoop-container-shell"></a><a href="#accessing-the-hadoop-container-shell" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Accessing the Hadoop container shell</h4>
<p>To open another shell to the Hadoop container, run the following command:</p>
<pre><code class="hljs"><span class="hljs-symbol">docker</span> exec -<span class="hljs-keyword">it </span>druid-hadoop-demo <span class="hljs-keyword">bash
</span></code></pre>
<h3><a class="anchor" aria-hidden="true" id="copy-input-data-to-the-hadoop-container"></a><a href="#copy-input-data-to-the-hadoop-container" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Copy input data to the Hadoop container</h3>
<p>From the apache-druid-24.0.1 package root on the host, copy the <code>quickstart/tutorial/wikiticker-2015-09-12-sampled.json.gz</code> sample data to the shared folder:</p>
<pre><code class="hljs css language-bash">cp quickstart/tutorial/wikiticker-2015-09-12-sampled.json.gz /tmp/shared/wikiticker-2015-09-12-sampled.json.gz
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="setup-hdfs-directories"></a><a href="#setup-hdfs-directories" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Setup HDFS directories</h3>
<p>In the Hadoop container's shell, run the following commands to setup the HDFS directories needed by this tutorial and copy the input data to HDFS.</p>
<pre><code class="hljs css language-bash"><span class="hljs-built_in">cd</span> /usr/<span class="hljs-built_in">local</span>/hadoop/bin
./hdfs dfs -mkdir /druid
./hdfs dfs -mkdir /druid/segments
./hdfs dfs -mkdir /quickstart
./hdfs dfs -chmod 777 /druid
./hdfs dfs -chmod 777 /druid/segments
./hdfs dfs -chmod 777 /quickstart
./hdfs dfs -chmod -R 777 /tmp
./hdfs dfs -chmod -R 777 /user
./hdfs dfs -put /shared/wikiticker-2015-09-12-sampled.json.gz /quickstart/wikiticker-2015-09-12-sampled.json.gz
</code></pre>
<p>If you encounter namenode errors when running this command, the Hadoop container may not be finished initializing. When this occurs, wait a couple of minutes and retry the commands.</p>
<h2><a class="anchor" aria-hidden="true" id="configure-druid-to-use-hadoop"></a><a href="#configure-druid-to-use-hadoop" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Configure Druid to use Hadoop</h2>
<p>Some additional steps are needed to configure the Druid cluster for Hadoop batch indexing.</p>
<h3><a class="anchor" aria-hidden="true" id="copy-hadoop-configuration-to-druid-classpath"></a><a href="#copy-hadoop-configuration-to-druid-classpath" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Copy Hadoop configuration to Druid classpath</h3>
<p>From the Hadoop container's shell, run the following command to copy the Hadoop .xml configuration files to the shared folder:</p>
<pre><code class="hljs css language-bash">cp /usr/<span class="hljs-built_in">local</span>/hadoop/etc/hadoop/*.xml /shared/hadoop_xml
</code></pre>
<p>From the host machine, run the following, where {PATH_TO_DRUID} is replaced by the path to the Druid package.</p>
<pre><code class="hljs css language-bash">mkdir -p {PATH_TO_DRUID}/conf/druid/single-server/micro-quickstart/_common/hadoop-xml
cp /tmp/shared/hadoop_xml/*.xml {PATH_TO_DRUID}/conf/druid/single-server/micro-quickstart/_common/hadoop-xml/
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="update-druid-segment-and-log-storage"></a><a href="#update-druid-segment-and-log-storage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Update Druid segment and log storage</h3>
<p>In your favorite text editor, open <code>conf/druid/single-server/micro-quickstart/_common/common.runtime.properties</code>, and make the following edits:</p>
<h4><a class="anchor" aria-hidden="true" id="disable-local-deep-storage-and-enable-hdfs-deep-storage"></a><a href="#disable-local-deep-storage-and-enable-hdfs-deep-storage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Disable local deep storage and enable HDFS deep storage</h4>
<pre><code class="hljs"><span class="hljs-meta">#</span>
<span class="hljs-meta"># Deep storage</span>
<span class="hljs-meta">#</span>

<span class="hljs-meta"># For local disk (only viable in a cluster if this is a network mount):</span>
<span class="hljs-meta">#druid.storage.type=local</span>
<span class="hljs-meta">#druid.storage.storageDirectory=var/druid/segments</span>

<span class="hljs-meta"># For HDFS:</span>
druid.storage.type=hdfs
druid.storage.storageDirectory=/druid/segments
</code></pre>
<h4><a class="anchor" aria-hidden="true" id="disable-local-log-storage-and-enable-hdfs-log-storage"></a><a href="#disable-local-log-storage-and-enable-hdfs-log-storage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Disable local log storage and enable HDFS log storage</h4>
<pre><code class="hljs"><span class="hljs-meta">#</span>
<span class="hljs-meta"># Indexing service logs</span>
<span class="hljs-meta">#</span>

<span class="hljs-meta"># For local disk (only viable in a cluster if this is a network mount):</span>
<span class="hljs-meta">#druid.indexer.logs.type=file</span>
<span class="hljs-meta">#druid.indexer.logs.directory=var/druid/indexing-logs</span>

<span class="hljs-meta"># For HDFS:</span>
druid.indexer.logs.type=hdfs
druid.indexer.logs.directory=/druid/indexing-logs

</code></pre>
<h3><a class="anchor" aria-hidden="true" id="restart-druid-cluster"></a><a href="#restart-druid-cluster" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Restart Druid cluster</h3>
<p>Once the Hadoop .xml files have been copied to the Druid cluster and the segment/log storage configuration has been updated to use HDFS, the Druid cluster needs to be restarted for the new configurations to take effect.</p>
<p>If the cluster is still running, CTRL-C to terminate the <code>bin/start-micro-quickstart</code> script, and re-run it to bring the Druid services back up.</p>
<h2><a class="anchor" aria-hidden="true" id="load-batch-data"></a><a href="#load-batch-data" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Load batch data</h2>
<p>We've included a sample of Wikipedia edits from September 12, 2015 to get you started.</p>
<p>To load this data into Druid, you can submit an <em>ingestion task</em> pointing to the file. We've included
a task that loads the <code>wikiticker-2015-09-12-sampled.json.gz</code> file included in the archive.</p>
<p>Let's submit the <code>wikipedia-index-hadoop.json</code> task:</p>
<pre><code class="hljs css language-bash">bin/post-index-task --file quickstart/tutorial/wikipedia-index-hadoop.json --url http://localhost:8081
</code></pre>
<h2><a class="anchor" aria-hidden="true" id="querying-your-data"></a><a href="#querying-your-data" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Querying your data</h2>
<p>After the data load is complete, please follow the <a href="/docs/latest/tutorials/tutorial-query.html">query tutorial</a> to run some example queries on the newly loaded data.</p>
<h2><a class="anchor" aria-hidden="true" id="cleanup"></a><a href="#cleanup" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Cleanup</h2>
<p>This tutorial is only meant to be used together with the <a href="/docs/latest/tutorials/tutorial-query.html">query tutorial</a>.</p>
<p>If you wish to go through any of the other tutorials, you will need to:</p>
<ul>
<li>Shut down the cluster and reset the cluster state by removing the contents of the <code>var</code> directory under the druid package.</li>
<li>Revert the deep storage and task storage config back to local types in <code>conf/druid/single-server/micro-quickstart/_common/common.runtime.properties</code></li>
<li>Restart the cluster</li>
</ul>
<p>This is necessary because the other ingestion tutorials will write to the same &quot;wikipedia&quot; datasource, and later tutorials expect the cluster to use local deep storage.</p>
<p>Example reverted config:</p>
<pre><code class="hljs"><span class="hljs-meta">#</span>
<span class="hljs-meta"># Deep storage</span>
<span class="hljs-meta">#</span>

<span class="hljs-meta"># For local disk (only viable in a cluster if this is a network mount):</span>
druid.storage.type=local
druid.storage.storageDirectory=<span class="hljs-keyword">var</span>/druid/segments

<span class="hljs-meta"># For HDFS:</span>
<span class="hljs-meta">#druid.storage.type=hdfs</span>
<span class="hljs-meta">#druid.storage.storageDirectory=/druid/segments</span>

<span class="hljs-meta">#</span>
<span class="hljs-meta"># Indexing service logs</span>
<span class="hljs-meta">#</span>

<span class="hljs-meta"># For local disk (only viable in a cluster if this is a network mount):</span>
druid.indexer.logs.type=file
druid.indexer.logs.directory=<span class="hljs-keyword">var</span>/druid/indexing-logs

<span class="hljs-meta"># For HDFS:</span>
<span class="hljs-meta">#druid.indexer.logs.type=hdfs</span>
<span class="hljs-meta">#druid.indexer.logs.directory=/druid/indexing-logs</span>

</code></pre>
<h2><a class="anchor" aria-hidden="true" id="further-reading"></a><a href="#further-reading" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Further reading</h2>
<p>For more information on loading batch data with Hadoop, please see <a href="/docs/latest/ingestion/hadoop.html">the Hadoop batch ingestion documentation</a>.</p>
</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/latest/tutorials/tutorial-kafka.html"><span class="arrow-prev">← </span><span>Load from Apache Kafka</span></a><a class="docs-next button" href="/docs/latest/tutorials/tutorial-query.html"><span>Querying data</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#install-docker">Install Docker</a></li><li><a href="#build-the-hadoop-docker-image">Build the Hadoop docker image</a></li><li><a href="#setup-the-hadoop-docker-cluster">Setup the Hadoop docker cluster</a><ul class="toc-headings"><li><a href="#create-temporary-shared-directory">Create temporary shared directory</a></li><li><a href="#configure-etchosts">Configure /etc/hosts</a></li><li><a href="#start-the-hadoop-container">Start the Hadoop container</a></li><li><a href="#copy-input-data-to-the-hadoop-container">Copy input data to the Hadoop container</a></li><li><a href="#setup-hdfs-directories">Setup HDFS directories</a></li></ul></li><li><a href="#configure-druid-to-use-hadoop">Configure Druid to use Hadoop</a><ul class="toc-headings"><li><a href="#copy-hadoop-configuration-to-druid-classpath">Copy Hadoop configuration to Druid classpath</a></li><li><a href="#update-druid-segment-and-log-storage">Update Druid segment and log storage</a></li><li><a href="#restart-druid-cluster">Restart Druid cluster</a></li></ul></li><li><a href="#load-batch-data">Load batch data</a></li><li><a href="#querying-your-data">Querying your data</a></li><li><a href="#cleanup">Cleanup</a></li><li><a href="#further-reading">Further reading</a></li></ul></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p><a href="/technology">Technology</a> · <a href="/use-cases">Use Cases</a> · <a href="/druid-powered">Powered by Druid</a> · <a href="/docs/latest/">Docs</a> · <a href="/community/">Community</a> · <a href="/downloads.html">Download</a> · <a href="/faq">FAQ</a></p></div><div class="text-center"><a title="Join the user group" href="https://groups.google.com/forum/#!forum/druid-user" target="_blank"><span class="fa fa-comments"></span></a> · <a title="Follow Druid" href="https://twitter.com/druidio" target="_blank"><span class="fab fa-twitter"></span></a> · <a title="Download via Apache" href="https://www.apache.org/dyn/closer.cgi?path=/incubator/druid/{{ site.druid_versions[0].versions[0].version }}/apache-druid-{{ site.druid_versions[0].versions[0].version }}-bin.tar.gz" target="_blank"><span class="fas fa-feather"></span></a> · <a title="GitHub" href="https://github.com/apache/druid" target="_blank"><span class="fab fa-github"></span></a></div><div class="text-center license">Copyright © 2022 <a href="https://www.apache.org/" target="_blank">Apache Software Foundation</a>.<br/>Except where otherwise noted, licensed under <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">CC BY-SA 4.0</a>.<br/>Apache Druid, Druid, and the Druid logo are either registered trademarks or trademarks of The Apache Software Foundation in the United States and other countries.</div></div></footer></div><script type="text/javascript" src="https://cdn.jsdelivr.net/npm/docsearch.js@2/dist/cdn/docsearch.min.js"></script><script>
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