| |
| |
| <!DOCTYPE html> |
| <!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]--> |
| <!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]--> |
| <head> |
| <meta charset="utf-8"> |
| |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> |
| |
| <title>sstablescrub — Apache Cassandra Documentation v4.0-rc2</title> |
| |
| |
| |
| |
| |
| |
| |
| |
| <script type="text/javascript" src="../../_static/js/modernizr.min.js"></script> |
| |
| |
| <script type="text/javascript" id="documentation_options" data-url_root="../../" src="../../_static/documentation_options.js"></script> |
| <script type="text/javascript" src="../../_static/jquery.js"></script> |
| <script type="text/javascript" src="../../_static/underscore.js"></script> |
| <script type="text/javascript" src="../../_static/doctools.js"></script> |
| <script type="text/javascript" src="../../_static/language_data.js"></script> |
| <script async="async" type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/latest.js?config=TeX-AMS-MML_HTMLorMML"></script> |
| |
| <script type="text/javascript" src="../../_static/js/theme.js"></script> |
| |
| |
| |
| |
| <link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" /> |
| <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" /> |
| <link rel="stylesheet" href="../../_static/extra.css" type="text/css" /> |
| <link rel="index" title="Index" href="../../genindex.html" /> |
| <link rel="search" title="Search" href="../../search.html" /> |
| <link rel="next" title="sstablesplit" href="sstablesplit.html" /> |
| <link rel="prev" title="sstablerepairedset" href="sstablerepairedset.html" /> |
| </head> |
| |
| <body class="wy-body-for-nav"> |
| |
| |
| <div class="wy-grid-for-nav"> |
| |
| <nav data-toggle="wy-nav-shift" class="wy-nav-side"> |
| <div class="wy-side-scroll"> |
| <div class="wy-side-nav-search" > |
| |
| |
| |
| <a href="../../index.html" class="icon icon-home"> Apache Cassandra |
| |
| |
| |
| </a> |
| |
| |
| |
| |
| <div class="version"> |
| 4.0-rc2 |
| </div> |
| |
| |
| |
| |
| <div role="search"> |
| <form id="rtd-search-form" class="wy-form" action="../../search.html" method="get"> |
| <input type="text" name="q" placeholder="Search docs" /> |
| <input type="hidden" name="check_keywords" value="yes" /> |
| <input type="hidden" name="area" value="default" /> |
| </form> |
| </div> |
| |
| |
| </div> |
| |
| <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation"> |
| |
| |
| |
| |
| |
| |
| <ul class="current"> |
| <li class="toctree-l1"><a class="reference internal" href="../../getting_started/index.html">Getting Started</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../new/index.html">New Features in Apache Cassandra 4.0</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../architecture/index.html">Architecture</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../cql/index.html">The Cassandra Query Language (CQL)</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../data_modeling/index.html">Data Modeling</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../configuration/index.html">Configuring Cassandra</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../operating/index.html">Operating Cassandra</a></li> |
| <li class="toctree-l1 current"><a class="reference internal" href="../index.html">Cassandra Tools</a><ul class="current"> |
| <li class="toctree-l2"><a class="reference internal" href="../cqlsh.html">cqlsh: the CQL shell</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../generatetokens.html">generatetokens</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../nodetool/nodetool.html">Nodetool</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../nodetool/nodetool.html#usage">Usage</a></li> |
| <li class="toctree-l2 current"><a class="reference internal" href="index.html">SSTable Tools</a><ul class="current"> |
| <li class="toctree-l3"><a class="reference internal" href="sstabledump.html">sstabledump</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="sstableexpiredblockers.html">sstableexpiredblockers</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="sstablelevelreset.html">sstablelevelreset</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="sstableloader.html">sstableloader</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="sstablemetadata.html">sstablemetadata</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="sstableofflinerelevel.html">sstableofflinerelevel</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="sstablerepairedset.html">sstablerepairedset</a></li> |
| <li class="toctree-l3 current"><a class="current reference internal" href="#">sstablescrub</a><ul> |
| <li class="toctree-l4"><a class="reference internal" href="#usage">Usage</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="#basic-scrub">Basic Scrub</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="#scrub-without-validation">Scrub without Validation</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="#skip-corrupted-counter-tables">Skip Corrupted Counter Tables</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="#dealing-with-overflow-dates">Dealing with Overflow Dates</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="#manifest-check">Manifest Check</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l3"><a class="reference internal" href="sstablesplit.html">sstablesplit</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="sstableupgrade.html">sstableupgrade</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="sstableutil.html">sstableutil</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="sstableverify.html">sstableverify</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l2"><a class="reference internal" href="../cassandra_stress.html">Cassandra Stress</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../troubleshooting/index.html">Troubleshooting</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../development/index.html">Contributing to Cassandra</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../faq/index.html">Frequently Asked Questions</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../plugins/index.html">Third-Party Plugins</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../bugs.html">Reporting Bugs</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../contactus.html">Contact us</a></li> |
| </ul> |
| |
| |
| |
| </div> |
| </div> |
| </nav> |
| |
| <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> |
| |
| |
| <nav class="wy-nav-top" aria-label="top navigation"> |
| |
| <i data-toggle="wy-nav-top" class="fa fa-bars"></i> |
| <a href="../../index.html">Apache Cassandra</a> |
| |
| </nav> |
| |
| |
| <div class="wy-nav-content"> |
| |
| <div class="rst-content"> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <div role="navigation" aria-label="breadcrumbs navigation"> |
| |
| <ul class="wy-breadcrumbs"> |
| |
| <li><a href="../../index.html">Docs</a> »</li> |
| |
| <li><a href="../index.html">Cassandra Tools</a> »</li> |
| |
| <li><a href="index.html">SSTable Tools</a> »</li> |
| |
| <li>sstablescrub</li> |
| |
| |
| <li class="wy-breadcrumbs-aside"> |
| |
| |
| <a href="../../_sources/tools/sstable/sstablescrub.rst.txt" rel="nofollow"> View page source</a> |
| |
| |
| </li> |
| |
| </ul> |
| |
| |
| <hr/> |
| </div> |
| <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> |
| <div itemprop="articleBody"> |
| |
| <div class="section" id="sstablescrub"> |
| <h1>sstablescrub<a class="headerlink" href="#sstablescrub" title="Permalink to this headline">¶</a></h1> |
| <p>Fix a broken sstable. The scrub process rewrites the sstable, skipping any corrupted rows. Because these rows are lost, follow this process with a repair.</p> |
| <p>ref: <a class="reference external" href="https://issues.apache.org/jira/browse/CASSANDRA-4321">https://issues.apache.org/jira/browse/CASSANDRA-4321</a></p> |
| <p>Cassandra must be stopped before this tool is executed, or unexpected results will occur. Note: the script does not verify that Cassandra is stopped.</p> |
| <div class="section" id="usage"> |
| <h2>Usage<a class="headerlink" href="#usage" title="Permalink to this headline">¶</a></h2> |
| <p>sstablescrub <options> <keyspace> <table></p> |
| <table class="docutils align-default"> |
| <colgroup> |
| <col style="width: 12%" /> |
| <col style="width: 88%" /> |
| </colgroup> |
| <tbody> |
| <tr class="row-odd"><td><p>–debug</p></td> |
| <td><p>display stack traces</p></td> |
| </tr> |
| <tr class="row-even"><td><p>-e,–header-fix <arg></p></td> |
| <td><p>Option whether and how to perform a check of the sstable serialization-headers and fix , fixable issues. |
| Possible argument values:</p> |
| <blockquote> |
| <div><ul class="simple"> |
| <li><p>validate-only: validate the serialization-headers, but do not fix those. Do not continue with scrub - i.e. only validate the header (dry-run of fix-only).</p></li> |
| <li><p>validate: (default) validate the serialization-headers, but do not fix those and only continue with scrub if no error were detected.</p></li> |
| <li><p>fix-only: validate and fix the serialization-headers, don’t continue with scrub.</p></li> |
| <li><p>fix: validate and fix the serialization-headers, do not fix and do not continue with scrub if the serialization-header check encountered errors.</p></li> |
| <li><p>off: don’t perform the serialization-header checks.</p></li> |
| </ul> |
| </div></blockquote> |
| </td> |
| </tr> |
| <tr class="row-odd"><td><p>-h,–help</p></td> |
| <td><p>display this help message</p></td> |
| </tr> |
| <tr class="row-even"><td><p>-m,–manifest-check</p></td> |
| <td><p>only check and repair the leveled manifest, without actually scrubbing the sstables</p></td> |
| </tr> |
| <tr class="row-odd"><td><p>-n,–no-validate</p></td> |
| <td><p>do not validate columns using column validator</p></td> |
| </tr> |
| <tr class="row-even"><td><p>-r,–reinsert-overflowed-ttl</p></td> |
| <td><p>Rewrites rows with overflowed expiration date affected by CASSANDRA-14092 |
| with the maximum supported expiration date of 2038-01-19T03:14:06+00:00. The rows are rewritten with the original timestamp incremented by one millisecond to override/supersede any potential tombstone that may have been generated during compaction of the affected rows.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p>-s,–skip-corrupted</p></td> |
| <td><p>skip corrupt rows in counter tables</p></td> |
| </tr> |
| <tr class="row-even"><td><p>-v,–verbose</p></td> |
| <td><p>verbose output</p></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <div class="section" id="basic-scrub"> |
| <h2>Basic Scrub<a class="headerlink" href="#basic-scrub" title="Permalink to this headline">¶</a></h2> |
| <p>The scrub without options will do a snapshot first, then write all non-corrupted files to a new sstable.</p> |
| <p>Example:</p> |
| <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">sstablescrub</span> <span class="n">keyspace1</span> <span class="n">standard1</span> |
| <span class="n">Pre</span><span class="o">-</span><span class="n">scrub</span> <span class="n">sstables</span> <span class="n">snapshotted</span> <span class="n">into</span> <span class="n">snapshot</span> <span class="n">pre</span><span class="o">-</span><span class="n">scrub</span><span class="o">-</span><span class="mi">1534424070883</span> |
| <span class="n">Scrubbing</span> <span class="n">BigTableReader</span><span class="p">(</span><span class="n">path</span><span class="o">=</span><span class="s1">'/var/lib/cassandra/data/keyspace1/standard1-6365332094dd11e88f324f9c503e4753/mc-5-big-Data.db'</span><span class="p">)</span> <span class="p">(</span><span class="mf">17.142</span><span class="n">MiB</span><span class="p">)</span> |
| <span class="n">Scrub</span> <span class="n">of</span> <span class="n">BigTableReader</span><span class="p">(</span><span class="n">path</span><span class="o">=</span><span class="s1">'/var/lib/cassandra/data/keyspace1/standard1-6365332094dd11e88f324f9c503e4753/mc-5-big-Data.db'</span><span class="p">)</span> <span class="n">complete</span><span class="p">:</span> <span class="mi">73367</span> <span class="n">rows</span> <span class="ow">in</span> <span class="n">new</span> <span class="n">sstable</span> <span class="ow">and</span> <span class="mi">0</span> <span class="n">empty</span> <span class="p">(</span><span class="n">tombstoned</span><span class="p">)</span> <span class="n">rows</span> <span class="n">dropped</span> |
| <span class="n">Checking</span> <span class="n">leveled</span> <span class="n">manifest</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="scrub-without-validation"> |
| <h2>Scrub without Validation<a class="headerlink" href="#scrub-without-validation" title="Permalink to this headline">¶</a></h2> |
| <p>ref: <a class="reference external" href="https://issues.apache.org/jira/browse/CASSANDRA-9406">https://issues.apache.org/jira/browse/CASSANDRA-9406</a></p> |
| <p>Use the –no-validate option to retain data that may be misrepresented (e.g., an integer stored in a long field) but not corrupt. This data usually doesn not present any errors to the client.</p> |
| <p>Example:</p> |
| <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">sstablescrub</span> <span class="o">--</span><span class="n">no</span><span class="o">-</span><span class="n">validate</span> <span class="n">keyspace1</span> <span class="n">standard1</span> |
| <span class="n">Pre</span><span class="o">-</span><span class="n">scrub</span> <span class="n">sstables</span> <span class="n">snapshotted</span> <span class="n">into</span> <span class="n">snapshot</span> <span class="n">pre</span><span class="o">-</span><span class="n">scrub</span><span class="o">-</span><span class="mi">1536243158517</span> |
| <span class="n">Scrubbing</span> <span class="n">BigTableReader</span><span class="p">(</span><span class="n">path</span><span class="o">=</span><span class="s1">'/var/lib/cassandra/data/keyspace1/standard1-bc9cf530b1da11e886c66d2c86545d91/mc-2-big-Data.db'</span><span class="p">)</span> <span class="p">(</span><span class="mf">4.482</span><span class="n">MiB</span><span class="p">)</span> |
| <span class="n">Scrub</span> <span class="n">of</span> <span class="n">BigTableReader</span><span class="p">(</span><span class="n">path</span><span class="o">=</span><span class="s1">'/var/lib/cassandra/data/keyspace1/standard1-bc9cf530b1da11e886c66d2c86545d91/mc-2-big-Data.db'</span><span class="p">)</span> <span class="n">complete</span><span class="p">;</span> <span class="n">looks</span> <span class="n">like</span> <span class="nb">all</span> <span class="mi">0</span> <span class="n">rows</span> <span class="n">were</span> <span class="n">tombstoned</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="skip-corrupted-counter-tables"> |
| <h2>Skip Corrupted Counter Tables<a class="headerlink" href="#skip-corrupted-counter-tables" title="Permalink to this headline">¶</a></h2> |
| <p>ref: <a class="reference external" href="https://issues.apache.org/jira/browse/CASSANDRA-5930">https://issues.apache.org/jira/browse/CASSANDRA-5930</a></p> |
| <p>If counter tables are corrupted in a way that prevents sstablescrub from completing, you can use the –skip-corrupted option to skip scrubbing those counter tables. This workaround is not necessary in versions 2.0+.</p> |
| <p>Example:</p> |
| <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">sstablescrub</span> <span class="o">--</span><span class="n">skip</span><span class="o">-</span><span class="n">corrupted</span> <span class="n">keyspace1</span> <span class="n">counter1</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="dealing-with-overflow-dates"> |
| <h2>Dealing with Overflow Dates<a class="headerlink" href="#dealing-with-overflow-dates" title="Permalink to this headline">¶</a></h2> |
| <p>ref: <a class="reference external" href="https://issues.apache.org/jira/browse/CASSANDRA-14092">https://issues.apache.org/jira/browse/CASSANDRA-14092</a></p> |
| <p>Using the option –reinsert-overflowed-ttl allows a rewriting of rows that had a max TTL going over the maximum (causing an overflow).</p> |
| <p>Example:</p> |
| <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">sstablescrub</span> <span class="o">--</span><span class="n">reinsert</span><span class="o">-</span><span class="n">overflowed</span><span class="o">-</span><span class="n">ttl</span> <span class="n">keyspace1</span> <span class="n">counter1</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="manifest-check"> |
| <h2>Manifest Check<a class="headerlink" href="#manifest-check" title="Permalink to this headline">¶</a></h2> |
| <p>As of Cassandra version 2.0, this option is no longer relevant, since level data was moved from a separate manifest into the sstable metadata.</p> |
| </div> |
| </div> |
| |
| |
| </div> |
| |
| </div> |
| <footer> |
| |
| <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> |
| |
| <a href="sstablesplit.html" class="btn btn-neutral float-right" title="sstablesplit" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a> |
| |
| |
| <a href="sstablerepairedset.html" class="btn btn-neutral float-left" title="sstablerepairedset" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a> |
| |
| </div> |
| |
| |
| <hr/> |
| |
| <div role="contentinfo"> |
| <p> |
| © Copyright 2020, The Apache Cassandra team |
| |
| </p> |
| </div> |
| Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/rtfd/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. |
| |
| </footer> |
| |
| </div> |
| </div> |
| |
| </section> |
| |
| </div> |
| |
| |
| |
| <script type="text/javascript"> |
| jQuery(function () { |
| SphinxRtdTheme.Navigation.enable(true); |
| }); |
| </script> |
| |
| |
| |
| |
| |
| |
| </body> |
| </html> |