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theme-doc-toc-mobile tocMobile_TmEX"><button type="button" class="clean-btn tocCollapsibleButton_Fzxq">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Submarine Server Implementation</h1></header><h2 class="anchor anchorWithStickyNavbar_mojV" id="architecture-overview">Architecture Overview<a class="hash-link" href="#architecture-overview" title="Direct link to heading">​</a></h2><div class="codeBlockContainer_I0IT theme-code-block"><div class="codeBlockContent_wNvx" style="color:#bfc7d5;background-color:#292d3e"><pre tabindex="0" class="prism-code language-text codeBlock_jd64 thin-scrollbar"><code class="codeBlockLines_mRuA"><span class="token-line" style="color:#bfc7d5"><span class="token plain">    +---------------Submarine Server ---+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    |                                   |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    | +------------+ +------------+     |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    | |Web Svc/Prxy| |Backend Svc |     |    +--Submarine Asset +</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    | +------------+ +------------+     |    |Project/Notebook  |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    |   ^         ^                     |    |Model/Metrics     |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    +---|---------|---------------------+    |Libraries/Dataset |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">        |         |                          +------------------+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">        |         |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">        |      +--|-Compute Cluster 1---+    +--Image Registry--+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">        +      |  |                     |    |   User&#x27;s Images  |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      User /   |  +                     |    |                  |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      Admin    | User Notebook Instance |    +------------------+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">               | Experiment Runs        |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">               +------------------------+    +-Data Storage-----+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">                                             | S3/HDFS, etc.    |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">               +----Compute Cluster 2---+    |                  |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">                                             +------------------+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">                        ...</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" title="Copy" class="copyButton_eDfN clean-btn"><span class="copyButtonIcons_W9eQ" aria-hidden="true"><svg class="copyButtonIcon_XEyF" viewBox="0 0 24 24"><path 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 class="copyButtonSuccessIcon_i9w9" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div><p>Here&#x27;s a diagram to illustrate the Submarine&#x27;s deployment.</p><ul><li>Submarine Server consists of web service/proxy, and backend services. They&#x27;re like &quot;control planes&quot; of Submarine, and users will interact with these services.</li><li>Submarine server could be a microservice architecture and can be deployed to one of the compute clusters. (see below, this will be useful when we only have one cluster).</li><li>There&#x27;re multiple compute clusters that could be used by Submarine service. For user&#x27;s running notebook instance, jobs, etc. they will be placed to one of the compute clusters by user&#x27;s preference or defined policies.</li><li>Submarine&#x27;s asset includes project/notebook(content)/models/metrics/dataset-meta, etc. can be stored inside Submarine&#x27;s own database.</li><li>Datasets can be stored in various locations such as S3/HDFS.</li><li>Users can push container (such as Docker) images to a preconfigured registry in Submarine, so Submarine service can know how to pull required container images.</li><li>Image Registry/Data-Storage, etc. are outside of Submarine server&#x27;s scope and should be managed by 3rd party applications.</li></ul><h2 class="anchor anchorWithStickyNavbar_mojV" id="submarine-server-and-its-apis">Submarine Server and its APIs<a class="hash-link" href="#submarine-server-and-its-apis" title="Direct link to heading">​</a></h2><p>Submarine server is designed to allow data scientists to access notebooks, submit/manage jobs, manage models, create model training workflows, access datasets, etc.</p><p>Submarine Server exposed UI and REST API. Users can also use CLI / SDK to manage assets inside Submarine Server.</p><div class="codeBlockContainer_I0IT theme-code-block"><div class="codeBlockContent_wNvx" style="color:#bfc7d5;background-color:#292d3e"><pre tabindex="0" class="prism-code language-text codeBlock_jd64 thin-scrollbar"><code class="codeBlockLines_mRuA"><span class="token-line" style="color:#bfc7d5"><span class="token plain">           +----------+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">           | CLI      |+---+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">           +----------+    v              +----------------+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">                         +--------------+ | Submarine      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">           +----------+  | REST API     | |                |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">           | SDK      |+&gt;|              |+&gt;  Server        |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">           +----------+  +--------------+ |                |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">                           ^              +----------------+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">           +----------+    |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">           | UI       |+---+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">           +----------+</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" title="Copy" class="copyButton_eDfN clean-btn"><span class="copyButtonIcons_W9eQ" aria-hidden="true"><svg class="copyButtonIcon_XEyF" viewBox="0 0 24 24"><path 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 class="copyButtonSuccessIcon_i9w9" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div><p>REST API will be used by the other 3 approaches. (CLI/SDK/UI)</p><p>The REST API Service handles HTTP requests and is responsible for authentication. It acts as the caller for the JobManager component.</p><p>The REST component defines the generic job spec which describes the detailed info about job. For more details, refer to <a href="https://docs.google.com/document/d/1kd-5UzsHft6gV7EuZiPXeWIKJtPqVwkNlqMvy0P_pAw/edit#" target="_blank" rel="noopener noreferrer">here</a>. (Please note that we&#x27;re converting REST endpoint description from Java-based REST API to swagger definition, once that is done, we should replace the link with swagger definition spec).</p><h2 class="anchor anchorWithStickyNavbar_mojV" id="proposal">Proposal<a class="hash-link" href="#proposal" title="Direct link to heading">​</a></h2><div class="codeBlockContainer_I0IT theme-code-block"><div class="codeBlockContent_wNvx" style="color:#bfc7d5;background-color:#292d3e"><pre tabindex="0" class="prism-code language-text codeBlock_jd64 thin-scrollbar"><code class="codeBlockLines_mRuA"><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><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">|           |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">| workbench +---+   +----------------------------------+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">|           |   |   | +------+ +---------------------+ |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">+-----------+   |   | |      | |      +-------+      | |     +---------------------+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">                |   | |      | |      |  K8s  |      | |     | +--------+   +----+ |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">+-----------+   |   | |      | |      +-------+      | |     | |        +--&gt;+job1| |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">|           |   |   | |      | |      submitter      | |     | |        |   +----+ |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">|    CLI    +------&gt;+ | REST | +---------------------+ +----&gt;+ |operator|   +----+ |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">|           |   |   | |      | +---------------------+ |     | |        +--&gt;+job2| |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">+-----------+   |   | |      | | +-------+ +-------+ | |     | +--------+   +----+ |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">                |   | |      | | |PlugMgr| |monitor| | |     |     K8s Cluster     |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">+-----------+   |   | |      | | +-------+ +-------+ | |     +---------------------+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">|           |   |   | |      | |      JobManager     | |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">|    SDK    +---+   | +------+ +---------------------+ |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">|           |       +----------------------------------+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">+-----------+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   client                          server</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" title="Copy" class="copyButton_eDfN clean-btn"><span class="copyButtonIcons_W9eQ" aria-hidden="true"><svg class="copyButtonIcon_XEyF" viewBox="0 0 24 24"><path 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 class="copyButtonSuccessIcon_i9w9" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div><p>We propose to split the original core module in the old layout into two modules, CLI and server as shown in FIG. The submarine-client calls the REST APIs to submit and retrieve the job info. The submarine-server provides the REST service, job management, submitting the job to cluster, and running job in different clusters through the corresponding runtime.</p><h2 class="anchor anchorWithStickyNavbar_mojV" id="submarine-server-components">Submarine Server Components<a class="hash-link" href="#submarine-server-components" title="Direct link to heading">​</a></h2><div class="codeBlockContainer_I0IT theme-code-block"><div class="codeBlockContent_wNvx" style="color:#bfc7d5;background-color:#292d3e"><pre tabindex="0" class="prism-code language-text codeBlock_jd64 thin-scrollbar"><code class="codeBlockLines_mRuA"><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">   +----------------------Submarine Server--------------------------------+</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   | +-----------------+ +------------------+ +--------------------+      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   | |  Experiment     | |Notebook Session  | |Environment Mgr     |      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   | |  Mgr            | |Mgr               | |                    |      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   | +-----------------+ +------------------+ +--------------------+      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   |                                                                      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   | +-----------------+ +------------------+ +--------------------+      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   | |  Model Registry | |Model Serving Mgr | |Compute Cluster Mgr |      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   | |                 | |                  | |                    |      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   | +-----------------+ +------------------+ +--------------------+      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   |                                                                      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   | +-----------------+ +------------------+ +--------------------+      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   | | DataSet Mgr     | |User/Team         | |Metadata Mgr        |      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   | |                 | |Permission Mgr    | |                    |      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   | +-----------------+ +------------------+ +--------------------+      |</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">   +----------------------------------------------------------------------+</span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" title="Copy" class="copyButton_eDfN clean-btn"><span class="copyButtonIcons_W9eQ" aria-hidden="true"><svg class="copyButtonIcon_XEyF" viewBox="0 0 24 24"><path 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 class="copyButtonSuccessIcon_i9w9" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div><h3 class="anchor anchorWithStickyNavbar_mojV" id="experiment-manager">Experiment Manager<a class="hash-link" href="#experiment-manager" title="Direct link to heading">​</a></h3><p>TODO</p><h3 class="anchor anchorWithStickyNavbar_mojV" id="notebook-sessions-manager">Notebook Sessions Manager<a class="hash-link" href="#notebook-sessions-manager" title="Direct link to heading">​</a></h3><p>TODO</p><h3 class="anchor anchorWithStickyNavbar_mojV" id="environment-manager">Environment Manager<a class="hash-link" href="#environment-manager" title="Direct link to heading">​</a></h3><p>TODO</p><h3 class="anchor anchorWithStickyNavbar_mojV" id="model-registry">Model Registry<a class="hash-link" href="#model-registry" title="Direct link to heading">​</a></h3><p>TODO</p><h3 class="anchor anchorWithStickyNavbar_mojV" id="model-serving-manager">Model Serving Manager<a class="hash-link" href="#model-serving-manager" title="Direct link to heading">​</a></h3><p>TODO</p><h3 class="anchor anchorWithStickyNavbar_mojV" id="compute-cluster-manager">Compute Cluster Manager<a class="hash-link" href="#compute-cluster-manager" title="Direct link to heading">​</a></h3><p>TODO</p><h3 class="anchor anchorWithStickyNavbar_mojV" id="dataset-manager">Dataset Manager<a class="hash-link" href="#dataset-manager" title="Direct link to heading">​</a></h3><p>TODO</p><h3 class="anchor anchorWithStickyNavbar_mojV" id="userteam-permissions-manager">User/team permissions manager<a class="hash-link" href="#userteam-permissions-manager" title="Direct link to heading">​</a></h3><p>TODO</p><h3 class="anchor anchorWithStickyNavbar_mojV" id="metadata-manager">Metadata Manager<a class="hash-link" href="#metadata-manager" title="Direct link to heading">​</a></h3><p>TODO</p><h2 class="anchor anchorWithStickyNavbar_mojV" id="componentsservices-outside-of-submarine-servers-scope">Components/services outside of Submarine Server&#x27;s scope<a class="hash-link" href="#componentsservices-outside-of-submarine-servers-scope" title="Direct link to heading">​</a></h2><p>TODO: Describe what are the out-of-scope components, which should be handled and managed outside of Submarine server. Candidates are: Identity management, data storage, metastore storage, etc.</p></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://github.com/apache/submarine/edit/master/website/versioned_docs/version-0.7.0/designDocs/submarine-server/architecture.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_dcUD" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_foO9"></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><div class="pagination-nav__item"><a class="pagination-nav__link" href="/docs/designDocs/storage-implementation"><div 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Components</a><ul><li><a href="#experiment-manager" class="table-of-contents__link toc-highlight">Experiment Manager</a></li><li><a href="#notebook-sessions-manager" class="table-of-contents__link toc-highlight">Notebook Sessions Manager</a></li><li><a href="#environment-manager" class="table-of-contents__link toc-highlight">Environment Manager</a></li><li><a href="#model-registry" class="table-of-contents__link toc-highlight">Model Registry</a></li><li><a href="#model-serving-manager" class="table-of-contents__link toc-highlight">Model Serving Manager</a></li><li><a href="#compute-cluster-manager" class="table-of-contents__link toc-highlight">Compute Cluster Manager</a></li><li><a href="#dataset-manager" class="table-of-contents__link toc-highlight">Dataset Manager</a></li><li><a href="#userteam-permissions-manager" class="table-of-contents__link toc-highlight">User/team permissions manager</a></li><li><a href="#metadata-manager" class="table-of-contents__link toc-highlight">Metadata 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