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aria-label="Breadcrumbs"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_YNFT"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Java SDK</span><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">SDK V2</span><meta itemprop="position" content="2"></li></ul></nav><span class="theme-doc-version-badge badge badge--secondary">Version: Next</span><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"><h1>Java SDK V2</h1><p>The DataHub Java SDK V2 provides a modern, type-safe interface for interacting with DataHub's metadata platform. Built on top of the existing DataHub infrastructure, SDK V2 offers an intuitive, fluent API for creating and managing metadata entities.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="why-sdk-v2">Why SDK V2?<a href="#why-sdk-v2" class="hash-link" aria-label="Direct link to Why SDK V2?" title="Direct link to Why SDK V2?"></a></h2><p>SDK V2 represents a significant evolution from the <a href="/docs/metadata-integration/java/as-a-library">V1 emitter-based approach</a>, offering:</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="type-safe-entity-builders"><strong>Type-Safe Entity Builders</strong><a href="#type-safe-entity-builders" class="hash-link" aria-label="Direct link to type-safe-entity-builders" title="Direct link to type-safe-entity-builders"></a></h3><p>Leverage Java's type system with fluent builders that guide you to create valid entities. No more manual URN construction or aspect wiring.</p><div class="language-java codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-java codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token class-name" style="color:rgb(255, 203, 107)">Dataset</span><span class="token plain"> dataset </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(255, 203, 107)">Dataset</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">builder</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 punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">platform</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"snowflake"</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 function" style="color:rgb(130, 170, 255)">name</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"my_database.my_schema.my_table"</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 function" style="color:rgb(130, 170, 255)">env</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"PROD"</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 function" style="color:rgb(130, 170, 255)">description</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"User profile dataset"</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 function" style="color:rgb(130, 170, 255)">build</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 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><h3 class="anchor anchorWithStickyNavbar_LWe7" id="simplified-crud-operations"><strong>Simplified CRUD Operations</strong><a href="#simplified-crud-operations" class="hash-link" aria-label="Direct link to simplified-crud-operations" title="Direct link to simplified-crud-operations"></a></h3><p>Perform create, read, update, and delete operations with a clean, intuitive API:</p><div class="language-java codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-java codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">client</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">entities</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 punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">upsert</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">dataset</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><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// Create or update</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">client</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">entities</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 punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">update</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">dataset</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><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// Update with patches</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token class-name" style="color:rgb(255, 203, 107)">Dataset</span><span class="token plain"> loaded </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> client</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">entities</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 punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">get</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">urn</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><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// Read from server</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><h3 class="anchor anchorWithStickyNavbar_LWe7" id="efficient-patch-based-updates"><strong>Efficient Patch-Based Updates</strong><a href="#efficient-patch-based-updates" class="hash-link" aria-label="Direct link to efficient-patch-based-updates" title="Direct link to efficient-patch-based-updates"></a></h3><p>Make incremental metadata changes without fetching or replacing entire aspects:</p><div class="language-java codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-java codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">dataset</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">addTag</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"pii"</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 function" style="color:rgb(130, 170, 255)">addOwner</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"urn:li:corpuser:john"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(255, 203, 107)">OwnershipType</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token constant" style="color:rgb(130, 170, 255)">TECHNICAL_OWNER</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 function" style="color:rgb(130, 170, 255)">addCustomProperty</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"team"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"data-engineering"</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" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">client</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">entities</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 punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">update</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">dataset</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><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// Applies only the changes</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><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lazy-loading--caching"><strong>Lazy Loading & Caching</strong><a href="#lazy-loading--caching" class="hash-link" aria-label="Direct link to lazy-loading--caching" title="Direct link to lazy-loading--caching"></a></h3><p>Efficiently fetch entity aspects on-demand with built-in TTL-based caching, reducing unnecessary network calls.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mode-aware-design"><strong>Mode-Aware Design</strong><a href="#mode-aware-design" class="hash-link" aria-label="Direct link to mode-aware-design" title="Direct link to mode-aware-design"></a></h3><p>Supports both interactive SDK mode and high-throughput ingestion mode to fit your use case.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="installation">Installation<a href="#installation" class="hash-link" aria-label="Direct link to Installation" title="Direct link to Installation"></a></h2><p>Add the DataHub client library to your project:</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="gradle">Gradle<a href="#gradle" class="hash-link" aria-label="Direct link to Gradle" title="Direct link to Gradle"></a></h3><div class="language-gradle codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-gradle codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">dependencies {</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> implementation 'io.acryl:datahub-client:__version__'</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">}</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><h3 class="anchor anchorWithStickyNavbar_LWe7" id="maven">Maven<a href="#maven" class="hash-link" aria-label="Direct link to Maven" title="Direct link to Maven"></a></h3><div class="language-xml codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-xml codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token tag punctuation" style="color:rgb(199, 146, 234)"><</span><span class="token tag" style="color:rgb(255, 85, 114)">dependency</span><span class="token tag 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 tag punctuation" style="color:rgb(199, 146, 234)"><</span><span class="token tag" style="color:rgb(255, 85, 114)">groupId</span><span class="token tag punctuation" style="color:rgb(199, 146, 234)">></span><span class="token plain">io.acryl</span><span class="token tag punctuation" style="color:rgb(199, 146, 234)"></</span><span class="token tag" style="color:rgb(255, 85, 114)">groupId</span><span class="token tag 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 tag punctuation" style="color:rgb(199, 146, 234)"><</span><span class="token tag" style="color:rgb(255, 85, 114)">artifactId</span><span class="token tag punctuation" style="color:rgb(199, 146, 234)">></span><span class="token plain">datahub-client</span><span class="token tag punctuation" style="color:rgb(199, 146, 234)"></</span><span class="token tag" style="color:rgb(255, 85, 114)">artifactId</span><span class="token tag 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 tag punctuation" style="color:rgb(199, 146, 234)"><</span><span class="token tag" style="color:rgb(255, 85, 114)">version</span><span class="token tag punctuation" style="color:rgb(199, 146, 234)">></span><span class="token plain">__version__</span><span class="token tag punctuation" style="color:rgb(199, 146, 234)"></</span><span class="token tag" style="color:rgb(255, 85, 114)">version</span><span class="token tag 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 tag punctuation" style="color:rgb(199, 146, 234)"></</span><span class="token tag" style="color:rgb(255, 85, 114)">dependency</span><span class="token tag 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><blockquote><p><strong>Note:</strong> Check the <a href="https://mvnrepository.com/artifact/io.acryl/datahub-client" target="_blank" rel="noopener noreferrer">Maven repository</a> for the latest version.</p></blockquote><h2 class="anchor anchorWithStickyNavbar_LWe7" id="quick-start">Quick Start<a href="#quick-start" class="hash-link" aria-label="Direct link to Quick Start" title="Direct link to Quick Start"></a></h2><p>Here's a complete example of creating a dataset with metadata using SDK V2:</p><div class="language-java codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-java codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> </span><span class="token import namespace" style="color:rgb(178, 204, 214)">datahub</span><span class="token import namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token import namespace" style="color:rgb(178, 204, 214)">client</span><span class="token import namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token import namespace" style="color:rgb(178, 204, 214)">v2</span><span class="token import namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token import class-name" style="color:rgb(255, 203, 107)">DataHubClientV2</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 keyword" style="font-style:italic">import</span><span class="token plain"> </span><span class="token import namespace" style="color:rgb(178, 204, 214)">datahub</span><span class="token import namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token import namespace" style="color:rgb(178, 204, 214)">client</span><span class="token import namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token import namespace" style="color:rgb(178, 204, 214)">v2</span><span class="token import namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token import namespace" style="color:rgb(178, 204, 214)">entity</span><span class="token import namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token import class-name" style="color:rgb(255, 203, 107)">Dataset</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 keyword" style="font-style:italic">import</span><span class="token plain"> </span><span class="token import namespace" style="color:rgb(178, 204, 214)">com</span><span class="token import namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token import namespace" style="color:rgb(178, 204, 214)">linkedin</span><span class="token import namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token import namespace" style="color:rgb(178, 204, 214)">common</span><span class="token import namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token import class-name" style="color:rgb(255, 203, 107)">OwnershipType</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" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// Create the client</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token class-name" style="color:rgb(255, 203, 107)">DataHubClientV2</span><span class="token plain"> client </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(255, 203, 107)">DataHubClientV2</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">builder</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 punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">server</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"http://localhost:8080"</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 function" style="color:rgb(130, 170, 255)">token</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"your-access-token"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// Optional for authentication</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 function" style="color:rgb(130, 170, 255)">build</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 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" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// Build a dataset with metadata</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token class-name" style="color:rgb(255, 203, 107)">Dataset</span><span class="token plain"> dataset </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(255, 203, 107)">Dataset</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">builder</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 punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">platform</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"snowflake"</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 function" style="color:rgb(130, 170, 255)">name</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"analytics.public.user_events"</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 function" style="color:rgb(130, 170, 255)">env</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"PROD"</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 function" style="color:rgb(130, 170, 255)">description</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"User interaction events"</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 function" style="color:rgb(130, 170, 255)">displayName</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"User Events"</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 function" style="color:rgb(130, 170, 255)">build</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 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" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// Add tags and owners</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">dataset</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">addTag</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"pii"</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 function" style="color:rgb(130, 170, 255)">addTag</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"analytics"</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 function" style="color:rgb(130, 170, 255)">addOwner</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"urn:li:corpuser:datateam"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(255, 203, 107)">OwnershipType</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token constant" style="color:rgb(130, 170, 255)">TECHNICAL_OWNER</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 function" style="color:rgb(130, 170, 255)">addCustomProperty</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"retention"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"90_days"</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" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// Upsert to DataHub</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">client</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">entities</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 punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">upsert</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">dataset</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" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token class-name" style="color:rgb(255, 203, 107)">System</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">out</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">println</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"Created dataset: "</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">+</span><span class="token plain"> dataset</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">getUrn</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 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" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// Close the client when done</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">client</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">close</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 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><h2 class="anchor anchorWithStickyNavbar_LWe7" id="core-concepts">Core Concepts<a href="#core-concepts" class="hash-link" aria-label="Direct link to Core Concepts" title="Direct link to Core Concepts"></a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="entities">Entities<a href="#entities" class="hash-link" aria-label="Direct link to Entities" title="Direct link to Entities"></a></h3><p>SDK V2 provides entity classes for major DataHub entities:</p><ul><li><strong>Dataset</strong> - Tables, views, and other data containers</li><li><strong>Chart</strong> - Visualizations and reports</li><li><strong>Dashboard</strong> - Collections of charts (coming soon)</li></ul><p>Each entity offers a fluent builder and methods for managing metadata.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="client-operations">Client Operations<a href="#client-operations" class="hash-link" aria-label="Direct link to Client Operations" title="Direct link to Client Operations"></a></h3><p>The <code>DataHubClientV2</code> provides centralized access to operations:</p><ul><li><code>entities()</code> - CRUD operations for entities</li><li><code>testConnection()</code> - Verify connectivity to DataHub server</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="patch-based-updates">Patch-Based Updates<a href="#patch-based-updates" class="hash-link" aria-label="Direct link to Patch-Based Updates" title="Direct link to Patch-Based Updates"></a></h3><p>Instead of replacing entire aspects, SDK V2 uses patch operations to make surgical updates to specific metadata fields. This is more efficient and reduces the risk of overwriting concurrent changes.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="documentation">Documentation<a href="#documentation" class="hash-link" aria-label="Direct link to Documentation" title="Direct link to Documentation"></a></h2><p>Explore detailed guides for working with SDK V2:</p><ul><li><strong><a href="/docs/metadata-integration/java/docs/sdk-v2/getting-started">Getting Started Guide</a></strong> - Comprehensive tutorial with authentication, configuration, and basic operations</li><li><strong><a href="/docs/metadata-integration/java/docs/sdk-v2/design-principles">Design Principles</a></strong> - Architectural overview and engineering principles behind SDK V2</li><li><strong><a href="/docs/metadata-integration/java/docs/sdk-v2/client">DataHubClientV2</a></strong> - Client configuration, connection management, and operation modes</li><li><strong><a href="/docs/metadata-integration/java/docs/sdk-v2/entities-overview">Entities Overview</a></strong> - Common patterns across all entity types</li><li><strong><a href="/docs/metadata-integration/java/docs/sdk-v2/dataset-entity">Dataset Entity</a></strong> - Complete guide to working with datasets</li><li><strong><a href="/docs/metadata-integration/java/docs/sdk-v2/chart-entity">Chart Entity</a></strong> - Creating and managing chart entities</li><li><strong><a href="/docs/metadata-integration/java/docs/sdk-v2/patch-operations">Patch Operations</a></strong> - Deep dive into efficient incremental updates</li><li><strong><a href="/docs/metadata-integration/java/docs/sdk-v2/migration-from-v1">Migration from V1</a></strong> - Step-by-step guide for upgrading from SDK V1</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="example-code">Example Code<a href="#example-code" class="hash-link" aria-label="Direct link to Example Code" title="Direct link to Example Code"></a></h2><p>Find complete, runnable examples in the <a href="https://github.com/datahub-project/datahub/blob/master/metadata-integration/java/examples/src/main/java/io/datahubproject/examples/v2/" target="_blank" rel="noopener noreferrer">examples directory</a>:</p><ul><li><a href="https://github.com/datahub-project/datahub/blob/master/metadata-integration/java/examples/src/main/java/io/datahubproject/examples/v2/DatasetCreateExample.java" target="_blank" rel="noopener noreferrer">DatasetCreateExample.java</a> - Basic dataset creation</li><li><a href="https://github.com/datahub-project/datahub/blob/master/metadata-integration/java/examples/src/main/java/io/datahubproject/examples/v2/DatasetPatchExample.java" target="_blank" rel="noopener noreferrer">DatasetPatchExample.java</a> - Adding tags, owners, and custom properties</li><li><a href="https://github.com/datahub-project/datahub/blob/master/metadata-integration/java/examples/src/main/java/io/datahubproject/examples/v2/DatasetFullExample.java" target="_blank" rel="noopener noreferrer">DatasetFullExample.java</a> - Comprehensive metadata management</li><li><a href="https://github.com/datahub-project/datahub/blob/master/metadata-integration/java/examples/src/main/java/io/datahubproject/examples/v2/ChartCreateExample.java" target="_blank" rel="noopener noreferrer">ChartCreateExample.java</a> - Chart entity creation</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="comparison-with-v1">Comparison with V1<a href="#comparison-with-v1" class="hash-link" aria-label="Direct link to Comparison with V1" title="Direct link to Comparison with V1"></a></h2><table><thead><tr><th>Feature</th><th>V1 (RestEmitter)</th><th>V2 (DataHubClientV2)</th></tr></thead><tbody><tr><td><strong>Entity Creation</strong></td><td>Manual MCP construction</td><td>Fluent entity builders</td></tr><tr><td><strong>Type Safety</strong></td><td>Low - manual aspect wiring</td><td>High - compile-time validation</td></tr><tr><td><strong>URN Management</strong></td><td>Manual string construction</td><td>Automatic from builder</td></tr><tr><td><strong>Updates</strong></td><td>Replace entire aspects</td><td>Patch-based incremental updates</td></tr><tr><td><strong>API Style</strong></td><td>Low-level emitter</td><td>High-level CRUD operations</td></tr><tr><td><strong>Learning Curve</strong></td><td>Steep - requires MCP knowledge</td><td>Gentle - intuitive builders</td></tr></tbody></table><p>See the <a href="/docs/metadata-integration/java/docs/sdk-v2/migration-from-v1">detailed migration guide</a> for help transitioning from V1 to V2.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a href="#support" class="hash-link" aria-label="Direct link to Support" title="Direct link to Support"></a></h2><p>For questions, issues, or contributions:</p><ul><li><a href="https://github.com/datahub-project/datahub" target="_blank" rel="noopener noreferrer">DataHub GitHub</a></li><li><a href="https://datahub.com/slack" target="_blank" rel="noopener noreferrer">DataHub Slack</a></li><li><a href="https://github.com/datahub-project/datahub/blob/master/docs/api/tutorials" target="_blank" rel="noopener noreferrer">API Tutorials</a> - Language-agnostic guides with Java examples</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="whats-next">What's Next?<a href="#whats-next" class="hash-link" aria-label="Direct link to What's Next?" title="Direct link to What's Next?"></a></h2><ul><li><strong>Getting Started</strong>: Follow the <a href="/docs/metadata-integration/java/docs/sdk-v2/getting-started">comprehensive tutorial</a> to build your first application</li><li><strong>Learn the Architecture</strong>: Read about SDK V2's <a href="/docs/metadata-integration/java/docs/sdk-v2/design-principles">design principles</a></li><li><strong>Explore Entities</strong>: Dive into <a href="/docs/metadata-integration/java/docs/sdk-v2/dataset-entity">Dataset</a> or <a href="/docs/metadata-integration/java/docs/sdk-v2/chart-entity">Chart</a> guides</li><li><strong>Migrate from V1</strong>: Use the <a href="/docs/metadata-integration/java/docs/sdk-v2/migration-from-v1">migration guide</a> to upgrade existing code</li></ul></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="slackUtm_uoBr"><div class="slackUtm_uoBr"><hr>Need more help? 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