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| <section id="bug-reports-and-feature-requests"> |
| <span id="bug-reports"></span><h1>Bug reports and feature requests<a class="headerlink" href="#bug-reports-and-feature-requests" title="Permalink to this heading">¶</a></h1> |
| <p>Arrow relies upon user feedback to identify defects and improvement |
| opportunities. All users are encouraged to participate by creating bug reports |
| and feature requests or commenting on existing issues. Even if you cannot |
| contribute solutions to the issues yourself, your feedback helps us understand |
| problems and prioritize work to improve the libraries.</p> |
| <section id="github-issues"> |
| <span id="id1"></span><h2>GitHub issues<a class="headerlink" href="#github-issues" title="Permalink to this heading">¶</a></h2> |
| <p>The Arrow project uses <a class="reference external" href="https://github.com/apache/arrow/issues">GitHub issues</a> |
| to track issues - both bug reports and feature requests.</p> |
| </section> |
| <section id="creating-issues"> |
| <span id="id3"></span><h2>Creating issues<a class="headerlink" href="#creating-issues" title="Permalink to this heading">¶</a></h2> |
| <p>Apache Arrow relies upon community contributions to address reported bugs and |
| feature requests. As with most software projects, contributor time and |
| resources are finite. The following guidelines aim to produce high-quality |
| bug reports and feature requests, enabling community contributors to respond |
| to more issues, faster:</p> |
| <section id="check-existing-issues"> |
| <span id="id4"></span><h3>Check existing issues<a class="headerlink" href="#check-existing-issues" title="Permalink to this heading">¶</a></h3> |
| <p>Before you create a new issue, we recommend you first |
| <a class="reference external" href="https://github.com/apache/arrow/issues">search</a> |
| for unresolved existing issues identifying the same problem or feature request.</p> |
| </section> |
| <section id="issue-description"> |
| <span id="describe-issue"></span><h3>Issue description<a class="headerlink" href="#issue-description" title="Permalink to this heading">¶</a></h3> |
| <p>A clear description of the problem or requested feature is the most important |
| element of any issue. An effective description helps developers understand |
| and efficiently engage on reported issues, and may include the following:</p> |
| <ul class="simple"> |
| <li><p><strong>Clear, minimal steps to reproduce the issue, with as few non-Arrow |
| dependencies as possible.</strong> If there’s a problem on reading a file, try to |
| provide as small of an example file as possible, or code to create one. |
| If your bug report says “it crashes trying to read my file, but I can’t |
| share it with you,” it’s really hard for us to debug.</p></li> |
| <li><p>Any relevant operating system, language, and library version information</p></li> |
| <li><p>If it isn’t obvious, clearly state the expected behavior and what actually |
| happened.</p></li> |
| <li><p>Avoid overloading a single issue with multiple problems or feature requests. |
| Each issue should deal with a single bug or feature.</p></li> |
| </ul> |
| <p>If a developer can’t get a failing unit test, they won’t be able to know that |
| the issue has been identified, and they won’t know when it has been fixed. |
| Try to anticipate the questions you might be asked by someone working to |
| understand the issue and provide those supporting details up front.</p> |
| <p>Examples of good bug reports are found below:</p> |
| <div class="sd-tab-set docutils"> |
| <input checked="checked" id="sd-tab-item-0" name="sd-tab-set-0" type="radio"> |
| </input><label class="sd-tab-label" for="sd-tab-item-0"> |
| Python</label><div class="sd-tab-content docutils"> |
| <p>The <code class="docutils literal notranslate"><span class="pre">print</span></code> method of a timestamp with timezone errors:</p> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">pyarrow</span> <span class="k">as</span> <span class="nn">pa</span> |
| |
| <span class="n">a</span> <span class="o">=</span> <span class="n">pa</span><span class="o">.</span><span class="n">array</span><span class="p">([</span><span class="mi">0</span><span class="p">],</span> <span class="n">pa</span><span class="o">.</span><span class="n">timestamp</span><span class="p">(</span><span class="s1">'s'</span><span class="p">,</span> <span class="n">tz</span><span class="o">=</span><span class="s1">'+02:00'</span><span class="p">))</span> |
| |
| <span class="nb">print</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="c1"># representation not correct?</span> |
| <span class="c1"># <pyarrow.lib.TimestampArray object at 0x7f834c7cb9a8></span> |
| <span class="c1"># [</span> |
| <span class="c1"># 1970-01-01 00:00:00</span> |
| <span class="c1"># ]</span> |
| |
| <span class="nb">print</span><span class="p">(</span><span class="n">a</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> |
| <span class="c1">#Traceback (most recent call last):</span> |
| <span class="c1"># File "<stdin>", line 1, in <module></span> |
| <span class="c1"># File "pyarrow/scalar.pxi", line 80, in pyarrow.lib.Scalar.__repr__</span> |
| <span class="c1"># File "pyarrow/scalar.pxi", line 463, in pyarrow.lib.TimestampScalar.as_py</span> |
| <span class="c1"># File "pyarrow/scalar.pxi", line 393, in pyarrow.lib._datetime_from_int</span> |
| <span class="c1">#ValueError: fromutc: dt.tzinfo is not self</span> |
| </pre></div> |
| </div> |
| </div> |
| <input id="sd-tab-item-1" name="sd-tab-set-0" type="radio"> |
| </input><label class="sd-tab-label" for="sd-tab-item-1"> |
| R</label><div class="sd-tab-content docutils"> |
| <p>Error when reading a CSV file with <code class="docutils literal notranslate"><span class="pre">col_types</span></code> option <code class="docutils literal notranslate"><span class="pre">"T"</span></code> or <code class="docutils literal notranslate"><span class="pre">"t"</span></code> when source data is in millisecond precision:</p> |
| <div class="highlight-R notranslate"><div class="highlight"><pre><span></span><span class="nf">library</span><span class="p">(</span><span class="n">arrow</span><span class="p">,</span><span class="w"> </span><span class="n">warn.conflicts</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="kc">FALSE</span><span class="p">)</span> |
| <span class="n">tf</span><span class="w"> </span><span class="o"><-</span><span class="w"> </span><span class="nf">tempfile</span><span class="p">()</span> |
| <span class="nf">write.csv</span><span class="p">(</span><span class="nf">data.frame</span><span class="p">(</span><span class="n">x</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">'2018-10-07 19:04:05.005'</span><span class="p">),</span><span class="w"> </span><span class="n">tf</span><span class="p">,</span><span class="w"> </span><span class="n">row.names</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="kc">FALSE</span><span class="p">)</span> |
| |
| <span class="c1"># successfully read in file</span> |
| <span class="nf">read_csv_arrow</span><span class="p">(</span><span class="n">tf</span><span class="p">,</span><span class="w"> </span><span class="n">as_data_frame</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="kc">TRUE</span><span class="p">)</span> |
| <span class="c1">#> # A tibble: 1 × 1</span> |
| <span class="c1">#> x</span> |
| <span class="c1">#> <dttm></span> |
| <span class="c1">#> 1 2018-10-07 20:04:05</span> |
| |
| <span class="c1"># the unit here is seconds - doesn't work</span> |
| <span class="nf">read_csv_arrow</span><span class="p">(</span> |
| <span class="w"> </span><span class="n">tf</span><span class="p">,</span> |
| <span class="w"> </span><span class="n">col_names</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">"x"</span><span class="p">,</span> |
| <span class="w"> </span><span class="n">col_types</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">"T"</span><span class="p">,</span> |
| <span class="w"> </span><span class="n">skip</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">1</span> |
| <span class="p">)</span> |
| <span class="c1">#> Error in `handle_csv_read_error()`:</span> |
| <span class="c1">#> ! Invalid: In CSV column #0: CSV conversion error to timestamp[s]: invalid value '2018-10-07 19:04:05.005'</span> |
| |
| <span class="c1"># the unit here is ms - doesn't work</span> |
| <span class="nf">read_csv_arrow</span><span class="p">(</span> |
| <span class="w"> </span><span class="n">tf</span><span class="p">,</span> |
| <span class="w"> </span><span class="n">col_names</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">"x"</span><span class="p">,</span> |
| <span class="w"> </span><span class="n">col_types</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">"t"</span><span class="p">,</span> |
| <span class="w"> </span><span class="n">skip</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">1</span> |
| <span class="p">)</span> |
| <span class="c1">#> Error in `handle_csv_read_error()`:</span> |
| <span class="c1">#> ! Invalid: In CSV column #0: CSV conversion error to time32[ms]: invalid value '2018-10-07 19:04:05.005'</span> |
| |
| <span class="c1"># the unit here is inferred as ns - does work!</span> |
| <span class="nf">read_csv_arrow</span><span class="p">(</span> |
| <span class="w"> </span><span class="n">tf</span><span class="p">,</span> |
| <span class="w"> </span><span class="n">col_names</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">"x"</span><span class="p">,</span> |
| <span class="w"> </span><span class="n">col_types</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">"?"</span><span class="p">,</span> |
| <span class="w"> </span><span class="n">skip</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">1</span><span class="p">,</span> |
| <span class="w"> </span><span class="n">as_data_frame</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="kc">FALSE</span> |
| <span class="p">)</span> |
| <span class="c1">#> Table</span> |
| <span class="c1">#> 1 rows x 1 columns</span> |
| <span class="c1">#> $x <timestamp[ns]></span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <p>Other resources for producing useful bug reports:</p> |
| <ul class="simple"> |
| <li><p><a class="reference external" href="https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports">Python: Craft Minimal Bug Reports by Matthew Rocklin</a></p></li> |
| <li><p><a class="reference external" href="https://www.tidyverse.org/help/#reprex">R: Tidyverse: Make a reprex</a></p></li> |
| <li><p><a class="reference external" href="https://reprex.tidyverse.org/articles/reprex-dos-and-donts.html">R: Tidyverse’s Reprex do’s and don’ts</a></p></li> |
| <li><p><a class="reference external" href="https://developer.mozilla.org/en-US/docs/Mozilla/QA/Bug_writing_guidelines">Mozilla’s bug-reporting guidelines</a></p></li> |
| </ul> |
| </section> |
| <section id="identify-component"> |
| <span id="identify-arrow-component"></span><h3>Identify Arrow component<a class="headerlink" href="#identify-component" title="Permalink to this heading">¶</a></h3> |
| <p>Arrow is an expansive project supporting many languages and organized into a |
| number of components. Identifying the affected component(s) helps new issues |
| get attention from appropriate contributors.</p> |
| <ul class="simple"> |
| <li><p><strong>Component label</strong>, which can be added by a committer of the Apache Arrow |
| project, is used to indicate the area of the project that your issue pertains |
| to (for example “Component: Python” or “Component: C++”).</p></li> |
| <li><p>Prefix the issue title with the component name in brackets, for example |
| <code class="docutils literal notranslate"><span class="pre">[Python]</span> <span class="pre">issue</span> <span class="pre">summary</span></code> ; this helps when navigating lists of open issues, |
| and it also makes our changelogs more readable. Most prefixes are exactly the |
| same as the <strong>Component</strong> name, with the following exceptions:</p> |
| <ul> |
| <li><p><strong>Component:</strong> Continuous Integration — <strong>Summary prefix:</strong> [CI]</p></li> |
| <li><p><strong>Component:</strong> Developer Tools — <strong>Summary prefix:</strong> [Dev]</p></li> |
| <li><p><strong>Component:</strong> Documentation — <strong>Summary prefix:</strong> [Docs]</p></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </section> |
| <section id="issue-lifecycle"> |
| <span id="id5"></span><h2>Issue lifecycle<a class="headerlink" href="#issue-lifecycle" title="Permalink to this heading">¶</a></h2> |
| <p>Both bug reports and feature requests follow a defined lifecycle. If an issue |
| is currently worked on, it should have a developer assigned. When an issue has |
| reached a terminal status, it is closed with one of two outcomes:</p> |
| <ul> |
| <li><p><strong>Closed as completed</strong> - indicates the issue is complete; the PR that |
| resolved the issue should have been automatically linked by GitHub |
| (assuming the PR correctly mentioned the issue number).</p> |
| <p>If you are merging a PR it is good practice to add a comment |
| to the linked issue about which PR is resolving it. This way |
| GitHub crates a notification for anybody that collaborated on |
| the issue.</p> |
| </li> |
| <li><p><strong>closed as not planned</strong> - indicates the issue is closed and should |
| not receive any further updates, but <em>without</em> action being taken.</p></li> |
| </ul> |
| <section id="issue-assignment"> |
| <span id="id6"></span><h3>Issue assignment<a class="headerlink" href="#issue-assignment" title="Permalink to this heading">¶</a></h3> |
| <p>Assignment signals commitment to work on an issue, and contributors should |
| self-assign issues when that work starts. Anyone can now self-assign issues |
| by commenting <code class="docutils literal notranslate"><span class="pre">take</span></code>.</p> |
| </section> |
| </section> |
| </section> |
| |
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