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| <div class="section" id="how-to-commit"> |
| <h1>How-to Commit<a class="headerlink" href="#how-to-commit" title="Permalink to this headline">¶</a></h1> |
| <p>If you are a committer, feel free to pick any process that works for you - so long as you are planning to commit the work yourself.</p> |
| <div class="section" id="patch-based-contribution"> |
| <h2>Patch based Contribution<a class="headerlink" href="#patch-based-contribution" title="Permalink to this headline">¶</a></h2> |
| <p>Here is how committing and merging will usually look for merging and pushing for tickets that follow the convention (if patch-based):</p> |
| <p>Hypothetical CASSANDRA-12345 ticket is a cassandra-3.0 based bug fix that requires different code for cassandra-3.11, cassandra-4.0, and trunk. Contributor Jackie supplied a patch for the root branch (12345-3.0.patch), and patches for the remaining branches (12345-3.11.patch, 12345-4.0.patch, 12345-trunk.patch).</p> |
| <dl class="simple"> |
| <dt>On cassandra-3.0:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">am</span> <span class="pre">-3</span> <span class="pre">12345-3.0.patch</span></code> (any problem b/c of CHANGES.txt not merging anymore, fix it in place)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">ant</span> <span class="pre">realclean</span> <span class="pre">&&</span> <span class="pre">ant</span> <span class="pre">jar</span> <span class="pre">build-test</span></code> (rebuild to make sure code compiles)</p></li> |
| </ol> |
| </dd> |
| <dt>On cassandra-3.11:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">merge</span> <span class="pre">cassandra-3.0</span> <span class="pre">-s</span> <span class="pre">ours</span></code></p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">apply</span> <span class="pre">-3</span> <span class="pre">12345-3.11.patch</span></code> (any issue with CHANGES.txt : fix and <cite>git add CHANGES.txt</cite>)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">ant</span> <span class="pre">realclean</span> <span class="pre">&&</span> <span class="pre">ant</span> <span class="pre">jar</span> <span class="pre">build-test</span></code> (rebuild to make sure code compiles)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">commit</span> <span class="pre">--amend</span></code> (Notice this will squash the 3.11 applied patch into the forward merge commit)</p></li> |
| </ol> |
| </dd> |
| <dt>On cassandra-4.0:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">merge</span> <span class="pre">cassandra-3.11</span> <span class="pre">-s</span> <span class="pre">ours</span></code></p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">apply</span> <span class="pre">-3</span> <span class="pre">12345-4.0.patch</span></code> (any issue with CHANGES.txt : fix and <cite>git add CHANGES.txt</cite>)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">ant</span> <span class="pre">realclean</span> <span class="pre">&&</span> <span class="pre">ant</span> <span class="pre">jar</span> <span class="pre">build-test</span></code> (rebuild to make sure code compiles)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">commit</span> <span class="pre">--amend</span></code> (Notice this will squash the 4.0 applied patch into the forward merge commit)</p></li> |
| </ol> |
| </dd> |
| <dt>On trunk:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">merge</span> <span class="pre">cassandra-4.0</span> <span class="pre">-s</span> <span class="pre">ours</span></code></p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">apply</span> <span class="pre">-3</span> <span class="pre">12345-trunk.patch</span></code> (any issue with CHANGES.txt : fix and <cite>git add CHANGES.txt</cite>)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">ant</span> <span class="pre">realclean</span> <span class="pre">&&</span> <span class="pre">ant</span> <span class="pre">jar</span> <span class="pre">build-test</span></code> (rebuild to make sure code compiles)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">commit</span> <span class="pre">--amend</span></code> (Notice this will squash the trunk applied patch into the forward merge commit)</p></li> |
| </ol> |
| </dd> |
| <dt>On any branch:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">push</span> <span class="pre">origin</span> <span class="pre">cassandra-3.0</span> <span class="pre">cassandra-3.11</span> <span class="pre">cassandra-4.0</span> <span class="pre">trunk</span> <span class="pre">--atomic</span> <span class="pre">-n</span></code> (dryrun check)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">push</span> <span class="pre">origin</span> <span class="pre">cassandra-3.0</span> <span class="pre">cassandra-3.11</span> <span class="pre">cassandra-4.0</span> <span class="pre">trunk</span> <span class="pre">--atomic</span></code></p></li> |
| </ol> |
| </dd> |
| </dl> |
| </div> |
| <div class="section" id="git-branch-based-contribution"> |
| <h2>Git branch based Contribution<a class="headerlink" href="#git-branch-based-contribution" title="Permalink to this headline">¶</a></h2> |
| <p>Same scenario, but a branch-based contribution:</p> |
| <dl class="simple"> |
| <dt>On cassandra-3.0:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">cherry-pick</span> <span class="pre"><sha-of-3.0-commit></span></code> (any problem b/c of CHANGES.txt not merging anymore, fix it in place)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">ant</span> <span class="pre">realclean</span> <span class="pre">&&</span> <span class="pre">ant</span> <span class="pre">jar</span> <span class="pre">build-test</span></code> (rebuild to make sure code compiles)</p></li> |
| </ol> |
| </dd> |
| <dt>On cassandra-3.11:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">merge</span> <span class="pre">cassandra-3.0</span> <span class="pre">-s</span> <span class="pre">ours</span></code></p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">format-patch</span> <span class="pre">-1</span> <span class="pre"><sha-of-3.11-commit></span></code> (alternative to format-patch and apply is <cite>cherry-pick -n</cite>)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">apply</span> <span class="pre">-3</span> <span class="pre"><sha-of-3.11-commit>.patch</span></code> (any issue with CHANGES.txt : fix and <cite>git add CHANGES.txt</cite>)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">ant</span> <span class="pre">realclean</span> <span class="pre">&&</span> <span class="pre">ant</span> <span class="pre">jar</span> <span class="pre">build-test</span></code> (rebuild to make sure code compiles)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">commit</span> <span class="pre">--amend</span></code> (Notice this will squash the 3.11 applied patch into the forward merge commit)</p></li> |
| </ol> |
| </dd> |
| <dt>On cassandra-4.0:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">merge</span> <span class="pre">cassandra-3.11</span> <span class="pre">-s</span> <span class="pre">ours</span></code></p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">format-patch</span> <span class="pre">-1</span> <span class="pre"><sha-of-4.0-commit></span></code> (alternative to format-patch and apply is <cite>cherry-pick -n</cite>)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">apply</span> <span class="pre">-3</span> <span class="pre"><sha-of-4.0-commit>.patch</span></code> (any issue with CHANGES.txt : fix and <cite>git add CHANGES.txt</cite>)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">ant</span> <span class="pre">realclean</span> <span class="pre">&&</span> <span class="pre">ant</span> <span class="pre">jar</span> <span class="pre">build-test</span></code> (rebuild to make sure code compiles)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">commit</span> <span class="pre">--amend</span></code> (Notice this will squash the 4.0 applied patch into the forward merge commit)</p></li> |
| </ol> |
| </dd> |
| <dt>On trunk:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">merge</span> <span class="pre">cassandra-4.0</span> <span class="pre">-s</span> <span class="pre">ours</span></code></p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">format-patch</span> <span class="pre">-1</span> <span class="pre"><sha-of-trunk-commit></span></code> (alternative to format-patch and apply is <cite>cherry-pick -n</cite>)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">apply</span> <span class="pre">-3</span> <span class="pre"><sha-of-trunk-commit>.patch</span></code> (any issue with CHANGES.txt : fix and <cite>git add CHANGES.txt</cite>)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">ant</span> <span class="pre">realclean</span> <span class="pre">&&</span> <span class="pre">ant</span> <span class="pre">jar</span> <span class="pre">build-test</span></code> (rebuild to make sure code compiles)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">commit</span> <span class="pre">--amend</span></code> (Notice this will squash the trunk applied patch into the forward merge commit)</p></li> |
| </ol> |
| </dd> |
| <dt>On any branch:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">push</span> <span class="pre">origin</span> <span class="pre">cassandra-3.0</span> <span class="pre">cassandra-3.11</span> <span class="pre">cassandra-4.0</span> <span class="pre">trunk</span> <span class="pre">--atomic</span> <span class="pre">-n</span></code> (dryrun check)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">push</span> <span class="pre">origin</span> <span class="pre">cassandra-3.0</span> <span class="pre">cassandra-3.11</span> <span class="pre">cassandra-4.0</span> <span class="pre">trunk</span> <span class="pre">--atomic</span></code></p></li> |
| </ol> |
| </dd> |
| </dl> |
| </div> |
| <div class="section" id="contributions-only-for-release-branches"> |
| <h2>Contributions only for release branches<a class="headerlink" href="#contributions-only-for-release-branches" title="Permalink to this headline">¶</a></h2> |
| <p>If the patch is for an older branch, and doesn’t impact later branches (such as trunk), we still need to merge up.</p> |
| <dl class="simple"> |
| <dt>On cassandra-3.0:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">cherry-pick</span> <span class="pre"><sha-of-3.0-commit></span></code> (any problem b/c of CHANGES.txt not merging anymore, fix it in place)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">ant</span> <span class="pre">realclean</span> <span class="pre">&&</span> <span class="pre">ant</span> <span class="pre">jar</span> <span class="pre">build-test</span></code> (rebuild to make sure code compiles)</p></li> |
| </ol> |
| </dd> |
| <dt>On cassandra-3.11:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">merge</span> <span class="pre">cassandra-3.0</span> <span class="pre">-s</span> <span class="pre">ours</span></code></p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">ant</span> <span class="pre">realclean</span> <span class="pre">&&</span> <span class="pre">ant</span> <span class="pre">jar</span> <span class="pre">build-test</span></code> (rebuild to make sure code compiles)</p></li> |
| </ol> |
| </dd> |
| <dt>On cassandra-4.0:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">merge</span> <span class="pre">cassandra-3.11</span> <span class="pre">-s</span> <span class="pre">ours</span></code></p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">ant</span> <span class="pre">realclean</span> <span class="pre">&&</span> <span class="pre">ant</span> <span class="pre">jar</span> <span class="pre">build-test</span></code> (rebuild to make sure code compiles)</p></li> |
| </ol> |
| </dd> |
| <dt>On trunk:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">merge</span> <span class="pre">cassandra-4.0</span> <span class="pre">-s</span> <span class="pre">ours</span></code></p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">ant</span> <span class="pre">realclean</span> <span class="pre">&&</span> <span class="pre">ant</span> <span class="pre">jar</span> <span class="pre">build-test</span></code> (rebuild to make sure code compiles)</p></li> |
| </ol> |
| </dd> |
| <dt>On any branch:</dt><dd><ol class="arabic simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">push</span> <span class="pre">origin</span> <span class="pre">cassandra-3.0</span> <span class="pre">cassandra-3.11</span> <span class="pre">cassandra-4.0</span> <span class="pre">trunk</span> <span class="pre">--atomic</span> <span class="pre">-n</span></code> (dryrun check)</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">push</span> <span class="pre">origin</span> <span class="pre">cassandra-3.0</span> <span class="pre">cassandra-3.11</span> <span class="pre">cassandra-4.0</span> <span class="pre">trunk</span> <span class="pre">--atomic</span></code></p></li> |
| </ol> |
| </dd> |
| </dl> |
| </div> |
| <div class="section" id="tips"> |
| <h2>Tips<a class="headerlink" href="#tips" title="Permalink to this headline">¶</a></h2> |
| <div class="admonition tip"> |
| <p class="admonition-title">Tip</p> |
| <blockquote> |
| <div><p>A template for commit messages:</p> |
| </div></blockquote> |
| <div class="highlight-none notranslate"><div class="highlight"><pre><span></span><One sentence description, usually Jira title or CHANGES.txt summary> |
| <Optional lengthier description> |
| |
| patch by <Authors>; reviewed by <Reviewers> for CASSANDRA-##### |
| |
| |
| Co-authored-by: Name1 <email1> |
| Co-authored-by: Name2 <email2> |
| </pre></div> |
| </div> |
| </div> |
| <div class="admonition tip"> |
| <p class="admonition-title">Tip</p> |
| <p>Notes on git flags: |
| <code class="docutils literal notranslate"><span class="pre">-3</span></code> flag to am and apply will instruct git to perform a 3-way merge for you. If a conflict is detected, you can either resolve it manually or invoke git mergetool - for both am and apply.</p> |
| <p><code class="docutils literal notranslate"><span class="pre">--atomic</span></code> flag to git push does the obvious thing: pushes all or nothing. Without the flag, the command is equivalent to running git push once per each branch. This is nifty in case a race condition happens - you won’t push half the branches, blocking other committers’ progress while you are resolving the issue.</p> |
| </div> |
| <div class="admonition tip"> |
| <p class="admonition-title">Tip</p> |
| <p>The fastest way to get a patch from someone’s commit in a branch on GH - if you don’t have their repo in remotes - is to append .patch to the commit url, e.g. |
| curl -O <a class="reference external" href="https://github.com/apache/cassandra/commit/7374e9b5ab08c1f1e612bf72293ea14c959b0c3c.patch">https://github.com/apache/cassandra/commit/7374e9b5ab08c1f1e612bf72293ea14c959b0c3c.patch</a></p> |
| </div> |
| <div class="admonition tip"> |
| <p class="admonition-title">Tip</p> |
| <p><code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">cherry-pick</span> <span class="pre">-n</span> <span class="pre"><sha-of-X.X-commit></span></code> can be used in place of the <code class="docutils literal notranslate"><span class="pre">git</span> <span class="pre">format-patch</span> <span class="pre">-1</span> <span class="pre"><sha-of-X.X-commit></span> <span class="pre">;</span> <span class="pre">git</span> <span class="pre">apply</span> <span class="pre">-3</span> <span class="pre"><sha-of-X.X-commit>.patch</span></code> steps.</p> |
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