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class="list-group-item-lay pjaxlink">Kylin Configuration</a> + </li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/docs/install/kylin_aws_emr.html" class="list-group-item-lay pjaxlink">Install Kylin on AWS EMR</a> + </li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/docs/install/kylin_docker.html" class="list-group-item-lay pjaxlink">Run Kylin with Docker</a> + </li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/docs/install/kylin_on_kubernetes.html" class="list-group-item-lay pjaxlink">Deploy Kylin on Kubernetes</a> + </li> + + + + + + + + + <ul> + </li> + + <li class="dropdown-submenu"><a href="#titleTutorial" data-toggle="collapse" class="navtitle">Tutorial</a> + <ul class="dropdown-menu"> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/docs/tutorial/kylin_sample.html" class="list-group-item-lay pjaxlink">Quick Start with Sample Cube</a> + </li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + 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+ + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/docs/tutorial/cube_build_job.html" class="list-group-item-lay pjaxlink">Cube Build and Job Monitoring</a> + </li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/docs/tutorial/cube_migration.html" class="list-group-item-lay pjaxlink">Cube Migration</a> + </li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + 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+ + + + + + + + + <li class="navlist"> + <a href="/docs/tutorial/cube_spark.html" class="list-group-item-lay pjaxlink">Build Cube with Spark</a> + </li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/docs/tutorial/cube_flink.html" class="list-group-item-lay pjaxlink">Build Cube with Flink</a> + </li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/docs/tutorial/cube_streaming.html" class="list-group-item-lay pjaxlink">Cubing from Kafka(Near RT Streaming)</a> + </li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/docs/tutorial/realtime_olap.html" class="list-group-item-lay pjaxlink">Real-time OLAP</a> + </li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/docs/tutorial/cube_build_performance.html" class="list-group-item-lay pjaxlink">Cube Build Tuning</a> + </li> + + + + + + + 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<div class="row" style="clear:both;"> + + <div class="col-md-8 col-lg-8 col-xs-12 col-sm-12 aside2" style="float: right;"> + <div id="container" class="docs"> + <div id="pjax"> + <h1 class="post-title">How to Contribute</h1> + <article class="post-content" > + <p>Apache Kylin is always looking for contributions of not only code, but also usage document, performance report, Q&A etc. All kinds of contributions pave the way towards a Kylin Committer. There is opportunity for everyone, especially for those come from analysis and solution background, due to the lacking of content from user and solution perspective.</p> + +<h2 id="source-branches">Source Branches</h2> +<p>Both code and document are under Git source control. Note the purpose of different branches.</p> + +<ul> + <li><code class="highlighter-rouge">master</code>: Main development branch for new features</li> + <li><code class="highlighter-rouge">2.[n].x</code>: Maintenance branch for a certain major release for v2.x</li> + <li><code class="highlighter-rouge">3.[n].x</code>: Maintenance branch for a certain major release for v3.x</li> + <li><code class="highlighter-rouge">document</code>: Document branch</li> +</ul> + +<h2 id="components-and-owners">Components and owners</h2> +<p>Apache Kylin has several sub-components. To better help the communityâs growth, we arrange one or multiple component owners for each component.</p> + +<ul> + <li> + <p>Component owners are volunteers who are expert in their component domain. The owner needs to be an Apache Kylin committer or PMC at this moment.</p> + </li> + <li> + <p>Owners will try and review patches that land within their componentâs scope.</p> + </li> + <li> + <p>Owners can rotate, based on his aspiration and community need.</p> + </li> + <li> + <p>When nominate or vote a new committer, the nominator needs to state which component the candidate can be the owner.</p> + </li> + <li> + <p>If youâre already an Apache Kylin committer or PMC memeber and would like to be a volunteer as a component owner, just write to the dev list and weâll sign you up.</p> + </li> + <li> + <p>All the project plan, decisions are still managed by Apache Kylin PMC.</p> + </li> + <li> + <p>If you think the component list need be updated (add, remove, rename, etc), write to the dev list and weâll review that.</p> + </li> +</ul> + +<p>Component owners is listed in the description field on this Apache Kylin <a href="https://issues.apache.org/jira/projects/KYLIN?selectedItem=com.atlassian.jira.jira-projects-plugin:components-page";>JIRA components page</a>. The owners are listed in the âDescriptionâ field rather than in the âComponent Leadâ field because the latter only allows us to list one individual whereas it is encouraged that components have multiple owners.</p> + +<h2 id="pick-a-task">Pick a task</h2> +<p>There are open tasks waiting to be done, tracked by JIRA. To make it easier to search, there are a few JIRA filters.</p> + +<ul> + <li><a href="https://issues.apache.org/jira/issues/?filter=12339895";>A list of tasks</a> managed by Yang Li.</li> + <li><a href="https://issues.apache.org/jira/issues/?filter=12341496";>A list of tasks</a> opened by Ted Yu, important small bugs and some are easy fixes.</li> + <li>Also you can search for tag ânewbieâ in Kylin JIRA.</li> +</ul> + +<p>Do not forget to discuss in <a href="/community/index.html">mailing list</a> before working on a big task.</p> + +<p>If create a new JIRA for bug or feature, remember to provide enough information for the community:</p> + +<ul> + <li>A well summary for the problem or feature</li> + <li>A detail description, which may include: + <ul> + <li>the environment of this problem occurred</li> + <li>the steps to reproduce the problem</li> + <li>the error trace or log files (as attachment)</li> + <li>the metadata of the model or cube</li> + </ul> + </li> + <li>Related components: we will arrange reviewer based on this selection.</li> + <li>Affected version: which Kylin youâre using.</li> +</ul> + +<h2 id="making-code-changes">Making Code Changes</h2> +<ul> + <li><a href="/development40/dev_env.html">Setup development environment</a></li> + <li>Raise a JIRA, describe the feature/enhancement/bug</li> + <li>Discuss with others in mailing list or issue comments, make sure the proposed changes fit in with what others are doing and have planned for the project</li> + <li>Make changes in your fork + <ul> + <li>No strict code style at the moment, but the general rule is keep consistent with existing files. E.g. use 4-space indent for java files.</li> + <li>Add test case for your code change as much as possible.</li> + <li>Make sure âmvn clean packageâ and âmvn testâ can get success.</li> + <li>Sufficient unit test and integration test is a mandatory part of code change.</li> + </ul> + </li> + <li><a href="/development40/howto_test.html">Run tests</a> to ensure your change is in good quality and does not break anything. If your patch was generated incorrectly or your code does not adhere to the code guidelines, you may be asked to redo some work.</li> + <li>Generate a patch and attach it to relative JIRA.</li> +</ul> + +<h2 id="generate-patch">Generate Patch</h2> +<ul> + <li>Using <code class="highlighter-rouge">submit-patch.py</code> (recommended) to create patches, upload to jira and optionally create/update reviews on Review Board. Patch name is automatically formatted as (JIRA).(branch name).(patch number).patch to follow Yetusâ naming rules.</li> +</ul> + +<div class="highlighter-rouge"><pre class="highlight"><code>$ ./dev-support/submit-patch.py -jid KYLIN-xxxxx -b master -srb +</code></pre> +</div> + +<ul> + <li>Use -h flag for this script to know detailed usage information. Most useful options are: + <ul> + <li>-b BRANCH, âbranch BRANCH : Specify base branch for generating the diff. If not specified, tracking branch is used. If there is no tracking branch, error will be thrown.</li> + <li>-jid JIRA_ID, âjira-id JIRA_ID : If used, deduces next patch version from attachments in the jira and uploads the new patch. Script will ask for jira username/password for authentication. If not set, patch is named <branch>.patch.</branch></li> + </ul> + </li> + <li>By default, itâll also create/update review board. To skip that action, use -srb option. It uses âIssue Linksâ in the jira to figure out if a review request already exists. If no review request is present, then creates a new one and populates all required fields using jira summary, patch description, etc. Also adds this reviewâs link to the jira.</li> + <li> + <p>To install required python dependencies, execute <code class="highlighter-rouge">pip install -r dev-support/python-requirements.txt</code> from the master branch.</p> + </li> + <li>Alternatively, you can also manually generate a patch. Please use <code class="highlighter-rouge">git rebase -i</code> first, to combine (squash) smaller commits into a single larger one. Then use <code class="highlighter-rouge">git format-patch</code> command to generate the patch, for a detail guide you can refer to <a href="https://ariejan.net/2009/10/26/how-to-create-and-apply-a-patch-with-git/";>How to create and apply a patch with Git</a></li> +</ul> + +<h2 id="code-review">Code Review</h2> +<p>The reviewer need to review the patch from the following perspectives:</p> + +<ul> + <li><em>Functionality</em>: the patch MUST address the issue and has been verified by the contributor before submitting for review.</li> + <li><em>Test coverage</em>: the change MUST be covered by a UT or the Integration test, otherwise it is not maintainable. Execptional case includes GUI, shell script, etc.</li> + <li><em>Performance</em>: the change SHOULD NOT downgrade Kylinâs performance.</li> + <li><em>Metadata compatibility</em>: the change should support old metadata definition. Otherwise, a metadata migration tool and documentation is required.</li> + <li><em>API compatibility</em>: the change SHOULD NOT break public APIâs functionality and behavior; If an old API need be replaced by the new one, print warning message there.</li> + <li><em>Documentation</em>: if the Kylin document need be updated together, create another JIRA with âDocumentâ as the component to track. In the document JIRA, attach the doc change patch which is againt the âdocumentâ branch.</li> +</ul> + +<p>A patch which doesnât comply with the above rules may not get merged.</p> + +<h2 id="patch-1-policy">Patch +1 Policy</h2> + +<p>Patches that fit within the scope of a single component require, at least, a +1 by one of the componentâs owners before commit. If owners are absent â busy or otherwise â two +1s by non-owners but committers will suffice.</p> + +<p>Patches that span components need at least two +1s before they can be committed, preferably +1s by owners of components touched by the x-component patch.</p> + +<p>Any -1 on a patch by anyone vetoes a patch; it cannot be committed until the justification for the -1 is addressed.</p> + +<h2 id="apply-patch">Apply Patch</h2> +<ul> + <li>Committer will review Pull Requests and Patches in JIRA regarding correctness, performance, design, coding style, test coverage;</li> + <li>Discuss and revise if necessary;</li> + <li>Finally committer merge code into target branch + <ul> + <li>For a git patch, use âgit am -s -3 patch-fileâ command to apply;</li> + <li>If it is from a github Pull Request, need add âThis closes #<pr number="">" as part of the commit messages. This will allow ASF Git bot to close the PR;</pr></li> + <li>Use <code class="highlighter-rouge">git rebase</code> to ensure the merged result is a streamline of commits.</li> + </ul> + </li> +</ul> + +<h2 id="making-document-changes">Making Document Changes</h2> +<p>Check out <a href="/development40/howto_docs.html">How to Write Document</a>.</p> + + + </article> + </div> + </div> + </div> + <!-- +* Licensed to the Apache Software Foundation (ASF) under one +* or more contributor license agreements. See the NOTICE file +* distributed with this work for additional information +* regarding copyright ownership. The ASF licenses this file +* to you under the Apache License, Version 2.0 (the +* "License"); you may not use this file except in compliance +* with the License. You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +--> + +<div class="col-md-4 col-lg-4 col-xs-12 col-sm-12 aside1 visible-sm visible-xs visible-md visible-lg" id="nside1" style=" margin-top: 5em;float:right;"> + <ul class="nav nav-pills nav-stacked"> + + <li><a href="#titleDevelopment Guide" data-toggle="collapse" class="navtitle">Development Guide</a></li> + <div class="collapse in"> + <div class="list-group" id="list1"> + <ul> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/development40/index.html" class="list-group-item-lay pjaxlink">Development Quick Guide</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/development40/dev_env.html" class="list-group-item-lay pjaxlink">Setup Development Env</a></li> + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/development40/coding_naming_convention.html" class="list-group-item-lay pjaxlink">Coding and Naming Convention</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/development40/howto_test.html" class="list-group-item-lay pjaxlink">How to Test</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/development40/howto_contribute.html" class="list-group-item-lay pjaxlink">How to Contribute</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/development40/howto_become_apache_committer.html" class="list-group-item-lay pjaxlink">How to become an Apache Committer</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/development40/howto_docs.html" class="list-group-item-lay pjaxlink">How to Write Document</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/development40/doc_spec.html" class="list-group-item-lay pjaxlink">Kylin Document Writing Specification</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/development40/howto_package.html" class="list-group-item-lay pjaxlink">How to Build Binary Package</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/development40/howto_release.html" class="list-group-item-lay pjaxlink">How to Make Release</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/development40/plugin_arch.html" class="list-group-item-lay pjaxlink">Plugin Architecture</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/development40/web_tech.html" class="list-group-item-lay pjaxlink">Kylin Web Summary</a></li> + + + + + + + + + + + + + + + + + <li class="navlist"> + <a href="/development40/about_temp_files.html" class="list-group-item-lay pjaxlink">About Temp Files</a></li> + + + + + + + <ul> + </div> +</div> + + + </ul> +</div> + </div> + </div> + <!-- +* Licensed to the Apache Software Foundation (ASF) under one +* or more contributor license agreements. 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