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aria-label="Scroll back to top" class="clean-btn theme-back-to-top-button backToTopButton_sjWU" type="button"></button><div class="docRoot_UBD9"><main class="docMainContainer_TBSr docMainContainerEnhanced_lQrH"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Load a file</h1></header><p>This tutorial demonstrates how to load data into Apache Druid from a file using Apache Druid&#x27;s native batch ingestion feature.</p>
 <p>You initiate data loading in Druid by submitting an <em>ingestion task</em> spec to the Druid Overlord. You can write ingestion
 specs by hand or using the <em>data loader</em> built into the web console.</p>
 <p>For production environments, it&#x27;s likely that you&#x27;ll want to automate data ingestion. This tutorial starts by showing
 you how to submit an ingestion spec directly in the web console, and then introduces ways to ingest batch data that
 lend themselves to automation—from the command line and from a script.</p>
 <h2 class="anchor anchorWithStickyNavbar_LWe7" id="loading-data-with-a-spec-via-console">Loading data with a spec (via console)<a href="#loading-data-with-a-spec-via-console" class="hash-link" aria-label="Direct link to Loading data with a spec (via console)" title="Direct link to Loading data with a spec (via console)"></a></h2>
 <p>The Druid package includes the following sample native batch ingestion task spec at <code>quickstart/tutorial/wikipedia-index.json</code>, shown here for convenience,
 which has been configured to read the <code>quickstart/tutorial/wikiticker-2015-09-12-sampled.json.gz</code> input file:</p>
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style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      </span><span class="token property">&quot;type&quot;</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;index_parallel&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      </span><span class="token property">&quot;inputSource&quot;</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">:</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">        </span><span class="token property">&quot;type&quot;</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;local&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">        </span><span class="token property">&quot;baseDir&quot;</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;quickstart/tutorial/&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">        </span><span class="token property">&quot;filter&quot;</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;wikiticker-2015-09-12-sampled.json.gz&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      </span><span class="token property">&quot;inputFormat&quot;</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">:</span><span class="token plain">  </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">        </span><span class="token property">&quot;type&quot;</span><span class="token operator" style="color:rgb(137, 221, 255)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;json&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      </span><span class="token property">&quot;appendToExisting&quot;</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">:</span><span class="token plain"> </span><span class="token boolean" style="color:rgb(255, 88, 116)">false</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    </span><span class="token property">&quot;tuningConfig&quot;</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">:</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      </span><span class="token property">&quot;type&quot;</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;index_parallel&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      </span><span class="token property">&quot;partitionsSpec&quot;</span><span class="token operator" style="color:rgb(137, 221, 255)">:</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">        </span><span class="token property">&quot;type&quot;</span><span class="token operator" style="color:rgb(137, 221, 255)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;dynamic&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      </span><span class="token property">&quot;maxRowsInMemory&quot;</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">:</span><span class="token plain"> </span><span class="token number" style="color:rgb(247, 140, 108)">25000</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</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 viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" 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 viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
 <p>This spec creates a datasource named &quot;wikipedia&quot;.</p>
 <p>From the Ingestion view, click the ellipses next to Tasks and choose <code>Submit JSON task</code>.</p>
 <p><img decoding="async" loading="lazy" alt="Tasks view add task" src="/assets/images/tutorial-batch-submit-task-01-fbbf03666cc6ca1078988febc09b8e5e.png" title="Tasks view add task" width="1250" height="740" class="img_ev3q"></p>
 <p>This brings up the spec submission dialog where you can paste the spec above.</p>
 <p><img decoding="async" loading="lazy" alt="Query view" src="/assets/images/tutorial-batch-submit-task-02-15a3dea57d3cb78f671e65fc6277fdf5.png" title="Query view" width="1250" height="740" class="img_ev3q"></p>
 <p>Once the spec is submitted, wait a few moments for the data to load, after which you can query it.</p>
 <h2 class="anchor anchorWithStickyNavbar_LWe7" id="loading-data-with-a-spec-via-command-line">Loading data with a spec (via command line)<a href="#loading-data-with-a-spec-via-command-line" class="hash-link" aria-label="Direct link to Loading data with a spec (via command line)" title="Direct link to Loading data with a spec (via command line)"></a></h2>
 <p>For convenience, the Druid package includes a batch ingestion helper script at <code>bin/post-index-task</code>.</p>
 <p>This script will POST an ingestion task to the Druid Overlord and poll Druid until the data is available for querying.</p>
 <p>Run the following command from Druid package root:</p>
 <div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">bin/post-index-task --file quickstart/tutorial/wikipedia-index.json --url http://localhost:8081</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 viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" 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 viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
 <p>You should see output like the following:</p>
 <div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">Beginning indexing data for wikipedia</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">Task started: index_wikipedia_2018-07-27T06:37:44.323Z</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">Task log:     http://localhost:8081/druid/indexer/v1/task/index_wikipedia_2018-07-27T06:37:44.323Z/log</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">Task status:  http://localhost:8081/druid/indexer/v1/task/index_wikipedia_2018-07-27T06:37:44.323Z/status</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">Task index_wikipedia_2018-07-27T06:37:44.323Z still running...</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">Task index_wikipedia_2018-07-27T06:37:44.323Z still running...</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">Task finished with status: SUCCESS</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">Completed indexing data for wikipedia. Now loading indexed data onto the cluster...</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">wikipedia loading complete! You may now query your data</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 viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" 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 viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
 <p>Once the spec is submitted, you can follow the same instructions as above to wait for the data to load and then query it.</p>
 <h2 class="anchor anchorWithStickyNavbar_LWe7" id="loading-data-without-the-script">Loading data without the script<a href="#loading-data-without-the-script" class="hash-link" aria-label="Direct link to Loading data without the script" title="Direct link to Loading data without the script"></a></h2>
 <p>Let&#x27;s briefly discuss how we would&#x27;ve submitted the ingestion task without using the script. You do not need to run these commands.</p>
 <p>To submit the task, POST it to Druid in a new terminal window from the <code>apache-druid-34.0.0</code> directory:</p>
 <div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">curl -X &#x27;POST&#x27; -H &#x27;Content-Type:application/json&#x27; -d @quickstart/tutorial/wikipedia-index.json http://localhost:8081/druid/indexer/v1/task</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 viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" 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 viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
 <p>Which will print the ID of the task if the submission was successful:</p>
 <div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">{&quot;task&quot;:&quot;index_wikipedia_2018-06-09T21:30:32.802Z&quot;}</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 viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" 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 viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
 <p>You can monitor the status of this task from the console as outlined above.</p>
 <h2 class="anchor anchorWithStickyNavbar_LWe7" id="querying-your-data">Querying your data<a href="#querying-your-data" class="hash-link" aria-label="Direct link to Querying your data" title="Direct link to Querying your data"></a></h2>
 <p>Once the data is loaded, please follow the <a href="/docs/34.0.0/tutorials/tutorial-query">query tutorial</a> to run some example queries on the newly loaded data.</p>
 <h2 class="anchor anchorWithStickyNavbar_LWe7" id="cleanup">Cleanup<a href="#cleanup" class="hash-link" aria-label="Direct link to Cleanup" title="Direct link to Cleanup"></a></h2>
 <p>If you wish to go through any of the other ingestion tutorials, you will need to shut down the cluster and reset the cluster state by removing the contents of the <code>var</code> directory under the druid package, as the other tutorials will write to the same &quot;wikipedia&quot; datasource.</p>
 <h2 class="anchor anchorWithStickyNavbar_LWe7" id="further-reading">Further reading<a href="#further-reading" class="hash-link" aria-label="Direct link to Further reading" title="Direct link to Further reading"></a></h2>
 <p>For more information on loading batch data, please see <a href="/docs/34.0.0/ingestion/native-batch">the native batch ingestion documentation</a>.</p></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#loading-data-with-a-spec-via-console" class="table-of-contents__link toc-highlight">Loading data with a spec (via console)</a></li><li><a href="#loading-data-with-a-spec-via-command-line" class="table-of-contents__link toc-highlight">Loading data with a spec (via command line)</a></li><li><a href="#loading-data-without-the-script" class="table-of-contents__link toc-highlight">Loading data without the script</a></li><li><a href="#querying-your-data" class="table-of-contents__link toc-highlight">Querying your data</a></li><li><a href="#cleanup" class="table-of-contents__link toc-highlight">Cleanup</a></li><li><a href="#further-reading" class="table-of-contents__link toc-highlight">Further reading</a></li></ul></div></div></div></div></main></div></div></div><footer class="footer"><div class="container container-fluid"><div class="footer__bottom text--center"><div class="margin-bottom--sm"><img src="/img/favicon.png" class="footer__logo themedComponent_mlkZ themedComponent--light_NVdE"><img src="/img/favicon.png" class="footer__logo themedComponent_mlkZ themedComponent--dark_xIcU"></div><div class="footer__copyright">Copyright © 2025 Apache Software Foundation. Except where otherwise noted, licensed under CC BY-SA 4.0. 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></div></footer></div>
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