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<div class="sect1">
<h2 id="review-checklist"><a class="anchor" href="#review-checklist"></a>Review Checklist</h2>
<div class="sectionbody">
<div class="paragraph">
<p>When reviewing tickets in Apache JIRA, the following items should be
covered as part of the review process:</p>
</div>
<div class="sect2">
<h3 id="general"><a class="anchor" href="#general"></a>General</h3>
<div class="ulist">
<ul>
<li>
<p>Does it conform to the <code>code_style</code> guidelines?</p>
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<li>
<p>Is there any redundant or duplicate code?</p>
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<p>Is the code as modular as possible?</p>
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<p>Can any singletons be avoided?</p>
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<p>Can any of the code be replaced with library functions?</p>
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<p>Are units of measurement used in the code consistent, both internally
and with the rest of the ecosystem?</p>
</li>
</ul>
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<div class="sect2">
<h3 id="error-handling"><a class="anchor" href="#error-handling"></a>Error-Handling</h3>
<div class="ulist">
<ul>
<li>
<p>Are all data inputs and outputs checked (for the correct type, length,
format, and range) and encoded?</p>
</li>
<li>
<p>Where third-party utilities are used, are returning errors being
caught?</p>
</li>
<li>
<p>Are invalid parameter values handled?</p>
</li>
<li>
<p>Are any Throwable/Exceptions passed to the JVMStabilityInspector?</p>
</li>
<li>
<p>Are errors well-documented? Does the error message tell the user how
to proceed?</p>
</li>
<li>
<p>Do exceptions propagate to the appropriate level in the code?</p>
</li>
</ul>
</div>
</div>
<div class="sect2">
<h3 id="documentation"><a class="anchor" href="#documentation"></a>Documentation</h3>
<div class="ulist">
<ul>
<li>
<p>Do comments exist and describe the intent of the code (the "why", not
the "how")?</p>
</li>
<li>
<p>Are javadocs added where appropriate?</p>
</li>
<li>
<p>Is any unusual behavior or edge-case handling described?</p>
</li>
<li>
<p>Are data structures and units of measurement explained?</p>
</li>
<li>
<p>Is there any incomplete code? If so, should it be removed or flagged
with a suitable marker like ‘TODO’?</p>
</li>
<li>
<p>Does the code self-document via clear naming, abstractions, and flow
control?</p>
</li>
<li>
<p>Have NEWS.txt, the cql3 docs, and the native protocol spec been
updated if needed?</p>
</li>
<li>
<p>Is the ticket tagged with "client-impacting" and "doc-impacting",
where appropriate?</p>
</li>
<li>
<p>Has lib/licences been updated for third-party libs? Are they Apache
License compatible?</p>
</li>
<li>
<p>Is the Component on the JIRA ticket set appropriately?</p>
</li>
</ul>
</div>
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<div class="sect2">
<h3 id="testing"><a class="anchor" href="#testing"></a>Testing</h3>
<div class="ulist">
<ul>
<li>
<p>Is the code testable? i.e. don’t add too many or hide dependencies,
unable to initialize objects, test frameworks can use methods etc.</p>
</li>
<li>
<p>Do tests exist and are they comprehensive?</p>
</li>
<li>
<p>Do unit tests actually test that the code is performing the intended
functionality?</p>
</li>
<li>
<p>Could any test code use common functionality (e.g. ccm, dtest, or
CqlTester methods) or abstract it there for reuse?</p>
</li>
<li>
<p>If the code may be affected by multi-node clusters, are there dtests?</p>
</li>
<li>
<p>If the code may take a long time to test properly, are there CVH
tests?</p>
</li>
<li>
<p>Is the test passing on CI for all affected branches (up to trunk, if
applicable)? Are there any regressions?</p>
</li>
<li>
<p>If patch affects read/write path, did we test for performance
regressions w/multiple workloads?</p>
</li>
<li>
<p>If adding a new feature, were tests added and performed confirming it
meets the expected SLA/use-case requirements for the feature?</p>
</li>
</ul>
</div>
</div>
<div class="sect2">
<h3 id="logging"><a class="anchor" href="#logging"></a>Logging</h3>
<div class="ulist">
<ul>
<li>
<p>Are logging statements logged at the correct level?</p>
</li>
<li>
<p>Are there logs in the critical path that could affect performance?</p>
</li>
<li>
<p>Is there any log that could be added to communicate status or
troubleshoot potential problems in this feature?</p>
</li>
<li>
<p>Can any unnecessary logging statement be removed?</p>
</li>
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