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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>Delta Lake extension</h1></header><p>Delta Lake is an open source storage framework that enables building a |
| Lakehouse architecture with various compute engines. <a href="/docs/latest/ingestion/input-sources#delta-lake-input-source">DeltaLakeInputSource</a> lets |
| you ingest data stored in a Delta Lake table into Apache Druid. To use the Delta Lake extension, add the <code>druid-deltalake-extensions</code> to the list of loaded extensions. |
| See <a href="/docs/latest/configuration/extensions#loading-extensions">Loading extensions</a> for more information.</p> |
| <p>The Delta input source reads the configured Delta Lake table and extracts the underlying Delta files in the table's latest snapshot |
| based on an optional Delta filter. These Delta Lake files are versioned Parquet files.</p> |
| <h2 class="anchor anchorWithStickyNavbar_LWe7" id="version-support">Version support<a href="#version-support" class="hash-link" aria-label="Direct link to Version support" title="Direct link to Version support"></a></h2> |
| <p>The Delta Lake extension uses the Delta Kernel introduced in Delta Lake 3.0.0, which is compatible with Apache Spark 3.5.x. |
| Older versions are unsupported, so consider upgrading to Delta Lake 3.0.x or higher to use this extension.</p> |
| <h2 class="anchor anchorWithStickyNavbar_LWe7" id="downloading-delta-lake-extension">Downloading Delta Lake extension<a href="#downloading-delta-lake-extension" class="hash-link" aria-label="Direct link to Downloading Delta Lake extension" title="Direct link to Downloading Delta Lake extension"></a></h2> |
| <p>To download <code>druid-deltalake-extensions</code>, run the following command after replacing <code><VERSION></code> with the desired |
| Druid version:</p> |
| <div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell 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">java \</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> -cp "lib/*" \</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> -Ddruid.extensions.directory="extensions" \</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> -Ddruid.extensions.hadoopDependenciesDir="hadoop-dependencies" \</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> org.apache.druid.cli.Main tools pull-deps \</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> --no-default-hadoop \</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> -c "org.apache.druid.extensions.contrib:druid-deltalake-extensions:<VERSION>"</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>See <a href="/docs/latest/configuration/extensions#loading-community-extensions">Loading community extensions</a> for more information.</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="#version-support" class="table-of-contents__link toc-highlight">Version support</a></li><li><a href="#downloading-delta-lake-extension" class="table-of-contents__link toc-highlight">Downloading Delta Lake extension</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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