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  <div class="section" id="sstableupgrade">
<h1>sstableupgrade<a class="headerlink" href="#sstableupgrade" title="Permalink to this headline">¶</a></h1>
<p>Upgrade the sstables in the given table (or snapshot) to the current version of Cassandra. This process is typically done after a Cassandra version upgrade. This operation will rewrite the sstables in the specified table to match the currently installed version of Cassandra. The sstableupgrade command can also be used to downgrade sstables to a previous version.</p>
<p>The snapshot option will only upgrade the specified snapshot. Upgrading snapshots is required before attempting to restore a snapshot taken in a major version older than the major version Cassandra is currently running. This will replace the files in the given snapshot as well as break any hard links to live sstables.</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>sstableupgrade &lt;options&gt; &lt;keyspace&gt; &lt;table&gt; [snapshot_name]</p>
<table border="1" class="docutils">
<colgroup>
<col width="30%" />
<col width="70%" />
</colgroup>
<tbody valign="top">
<tr class="row-odd"><td>–debug</td>
<td>display stack traces</td>
</tr>
<tr class="row-even"><td>-h,–help</td>
<td>display this help message</td>
</tr>
<tr class="row-odd"><td>-k,–keep-source</td>
<td>do not delete the source sstables</td>
</tr>
</tbody>
</table>
</div>
<div class="section" id="rewrite-tables-to-the-current-cassandra-version">
<h2>Rewrite tables to the current Cassandra version<a class="headerlink" href="#rewrite-tables-to-the-current-cassandra-version" title="Permalink to this headline">¶</a></h2>
<p>Start with a set of sstables in one version of Cassandra:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ls</span> <span class="o">-</span><span class="n">al</span> <span class="o">/</span><span class="n">tmp</span><span class="o">/</span><span class="n">cassandra</span><span class="o">/</span><span class="n">data</span><span class="o">/</span><span class="n">keyspace1</span><span class="o">/</span><span class="n">standard1</span><span class="o">-</span><span class="mi">9695</span><span class="n">b790a63211e8a6fb091830ac5256</span><span class="o">/</span>
<span class="o">...</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>      <span class="mi">348</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">45</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">CRC</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>  <span class="mi">5620000</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">45</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Data</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>       <span class="mi">10</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">45</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Digest</span><span class="o">.</span><span class="n">sha1</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>    <span class="mi">25016</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">45</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Filter</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>   <span class="mi">480000</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">45</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Index</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>     <span class="mi">9895</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">45</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Statistics</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>     <span class="mi">3562</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">45</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Summary</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>       <span class="mi">79</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">45</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">TOC</span><span class="o">.</span><span class="n">txt</span>
</pre></div>
</div>
<p>After upgrading the Cassandra version, upgrade the sstables:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">sstableupgrade</span> <span class="n">keyspace1</span> <span class="n">standard1</span>
<span class="n">Found</span> <span class="mi">1</span> <span class="n">sstables</span> <span class="n">that</span> <span class="n">need</span> <span class="n">upgrading</span><span class="o">.</span>
<span class="n">Upgrading</span> <span class="n">BigTableReader</span><span class="p">(</span><span class="n">path</span><span class="o">=</span><span class="s1">&#39;/var/lib/cassandra/data/keyspace1/standard1-9695b790a63211e8a6fb091830ac5256/keyspace1-standard1-ka-1-Data.db&#39;</span><span class="p">)</span>
<span class="n">Upgrade</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">&#39;/var/lib/cassandra/data/keyspace1/standard1-9695b790a63211e8a6fb091830ac5256/keyspace1-standard1-ka-1-Data.db&#39;</span><span class="p">)</span> <span class="n">complete</span><span class="o">.</span>

<span class="n">ls</span> <span class="o">-</span><span class="n">al</span> <span class="o">/</span><span class="n">tmp</span><span class="o">/</span><span class="n">cassandra</span><span class="o">/</span><span class="n">data</span><span class="o">/</span><span class="n">keyspace1</span><span class="o">/</span><span class="n">standard1</span><span class="o">-</span><span class="mi">9695</span><span class="n">b790a63211e8a6fb091830ac5256</span><span class="o">/</span>
<span class="o">...</span>
<span class="n">drwxr</span><span class="o">-</span><span class="n">xr</span><span class="o">-</span><span class="n">x</span>   <span class="mi">2</span> <span class="n">user</span>  <span class="n">wheel</span>       <span class="mi">64</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">48</span> <span class="n">backups</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>      <span class="mi">292</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">48</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">CRC</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>  <span class="mi">4599475</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">48</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">Data</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>       <span class="mi">10</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">48</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">Digest</span><span class="o">.</span><span class="n">crc32</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>    <span class="mi">25256</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">48</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">Filter</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>   <span class="mi">330807</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">48</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">Index</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>    <span class="mi">10312</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">48</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">Statistics</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>     <span class="mi">3506</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">48</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">Summary</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>       <span class="mi">80</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">48</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">TOC</span><span class="o">.</span><span class="n">txt</span>
</pre></div>
</div>
</div>
<div class="section" id="rewrite-tables-to-the-current-cassandra-version-and-keep-tables-in-old-version">
<h2>Rewrite tables to the current Cassandra version, and keep tables in old version<a class="headerlink" href="#rewrite-tables-to-the-current-cassandra-version-and-keep-tables-in-old-version" title="Permalink to this headline">¶</a></h2>
<p>Again, starting with a set of sstables in one version:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ls</span> <span class="o">-</span><span class="n">al</span> <span class="o">/</span><span class="n">tmp</span><span class="o">/</span><span class="n">cassandra</span><span class="o">/</span><span class="n">data</span><span class="o">/</span><span class="n">keyspace1</span><span class="o">/</span><span class="n">standard1</span><span class="o">-</span><span class="n">db532690a63411e8b4ae091830ac5256</span><span class="o">/</span>
<span class="o">...</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>      <span class="mi">348</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">CRC</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>  <span class="mi">5620000</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Data</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>       <span class="mi">10</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Digest</span><span class="o">.</span><span class="n">sha1</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>    <span class="mi">25016</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Filter</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>   <span class="mi">480000</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Index</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>     <span class="mi">9895</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Statistics</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>     <span class="mi">3562</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Summary</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>       <span class="mi">79</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">TOC</span><span class="o">.</span><span class="n">txt</span>
</pre></div>
</div>
<p>After upgrading the Cassandra version, upgrade the sstables, retaining the original sstables:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">sstableupgrade</span> <span class="n">keyspace1</span> <span class="n">standard1</span> <span class="o">-</span><span class="n">k</span>
<span class="n">Found</span> <span class="mi">1</span> <span class="n">sstables</span> <span class="n">that</span> <span class="n">need</span> <span class="n">upgrading</span><span class="o">.</span>
<span class="n">Upgrading</span> <span class="n">BigTableReader</span><span class="p">(</span><span class="n">path</span><span class="o">=</span><span class="s1">&#39;/var/lib/cassandra/data/keyspace1/standard1-db532690a63411e8b4ae091830ac5256/keyspace1-standard1-ka-1-Data.db&#39;</span><span class="p">)</span>
<span class="n">Upgrade</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">&#39;/var/lib/cassandra/data/keyspace1/standard1-db532690a63411e8b4ae091830ac5256/keyspace1-standard1-ka-1-Data.db&#39;</span><span class="p">)</span> <span class="n">complete</span><span class="o">.</span>

<span class="n">ls</span> <span class="o">-</span><span class="n">al</span> <span class="o">/</span><span class="n">tmp</span><span class="o">/</span><span class="n">cassandra</span><span class="o">/</span><span class="n">data</span><span class="o">/</span><span class="n">keyspace1</span><span class="o">/</span><span class="n">standard1</span><span class="o">-</span><span class="n">db532690a63411e8b4ae091830ac5256</span><span class="o">/</span>
<span class="o">...</span>
<span class="n">drwxr</span><span class="o">-</span><span class="n">xr</span><span class="o">-</span><span class="n">x</span>   <span class="mi">2</span> <span class="n">user</span>  <span class="n">wheel</span>       <span class="mi">64</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">14</span><span class="p">:</span><span class="mi">00</span> <span class="n">backups</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--@</span>  <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>      <span class="mi">348</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">CRC</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--@</span>  <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>  <span class="mi">5620000</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Data</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--@</span>  <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>       <span class="mi">10</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Digest</span><span class="o">.</span><span class="n">sha1</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--@</span>  <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>    <span class="mi">25016</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Filter</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--@</span>  <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>   <span class="mi">480000</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Index</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--@</span>  <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>     <span class="mi">9895</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Statistics</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--@</span>  <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>     <span class="mi">3562</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">Summary</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--@</span>  <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>       <span class="mi">79</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">13</span><span class="p">:</span><span class="mi">58</span> <span class="n">keyspace1</span><span class="o">-</span><span class="n">standard1</span><span class="o">-</span><span class="n">ka</span><span class="o">-</span><span class="mi">1</span><span class="o">-</span><span class="n">TOC</span><span class="o">.</span><span class="n">txt</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>      <span class="mi">292</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">14</span><span class="p">:</span><span class="mi">01</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">CRC</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>  <span class="mi">4596370</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">14</span><span class="p">:</span><span class="mi">01</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">Data</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>       <span class="mi">10</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">14</span><span class="p">:</span><span class="mi">01</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">Digest</span><span class="o">.</span><span class="n">crc32</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>    <span class="mi">25256</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">14</span><span class="p">:</span><span class="mi">01</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">Filter</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>   <span class="mi">330801</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">14</span><span class="p">:</span><span class="mi">01</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">Index</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>    <span class="mi">10312</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">14</span><span class="p">:</span><span class="mi">01</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">Statistics</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>     <span class="mi">3506</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">14</span><span class="p">:</span><span class="mi">01</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">Summary</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span>   <span class="mi">1</span> <span class="n">user</span>  <span class="n">wheel</span>       <span class="mi">80</span> <span class="n">Aug</span> <span class="mi">22</span> <span class="mi">14</span><span class="p">:</span><span class="mi">01</span> <span class="n">mc</span><span class="o">-</span><span class="mi">2</span><span class="o">-</span><span class="n">big</span><span class="o">-</span><span class="n">TOC</span><span class="o">.</span><span class="n">txt</span>
</pre></div>
</div>
</div>
<div class="section" id="rewrite-a-snapshot-to-the-current-cassandra-version">
<h2>Rewrite a snapshot to the current Cassandra version<a class="headerlink" href="#rewrite-a-snapshot-to-the-current-cassandra-version" title="Permalink to this headline">¶</a></h2>
<p>Find the snapshot name:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">nodetool</span> <span class="n">listsnapshots</span>

<span class="n">Snapshot</span> <span class="n">Details</span><span class="p">:</span>
<span class="n">Snapshot</span> <span class="n">name</span>       <span class="n">Keyspace</span> <span class="n">name</span>                <span class="n">Column</span> <span class="n">family</span> <span class="n">name</span>           <span class="kc">True</span> <span class="n">size</span>          <span class="n">Size</span> <span class="n">on</span> <span class="n">disk</span>
<span class="o">...</span>
<span class="mi">1534962986979</span>       <span class="n">keyspace1</span>                    <span class="n">standard1</span>                    <span class="mf">5.85</span> <span class="n">MB</span>            <span class="mf">5.85</span> <span class="n">MB</span>
</pre></div>
</div>
<p>Then rewrite the snapshot:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">sstableupgrade</span> <span class="n">keyspace1</span> <span class="n">standard1</span> <span class="mi">1534962986979</span>
<span class="n">Found</span> <span class="mi">1</span> <span class="n">sstables</span> <span class="n">that</span> <span class="n">need</span> <span class="n">upgrading</span><span class="o">.</span>
<span class="n">Upgrading</span> <span class="n">BigTableReader</span><span class="p">(</span><span class="n">path</span><span class="o">=</span><span class="s1">&#39;/var/lib/cassandra/data/keyspace1/standard1-5850e9f0a63711e8a5c5091830ac5256/snapshots/1534962986979/keyspace1-standard1-ka-1-Data.db&#39;</span><span class="p">)</span>
<span class="n">Upgrade</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">&#39;/var/lib/cassandra/data/keyspace1/standard1-5850e9f0a63711e8a5c5091830ac5256/snapshots/1534962986979/keyspace1-standard1-ka-1-Data.db&#39;</span><span class="p">)</span> <span class="n">complete</span><span class="o">.</span>
</pre></div>
</div>
</div>
</div>


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