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| <div class="section" id="sstableverify"> |
| <h1>sstableverify<a class="headerlink" href="#sstableverify" title="Permalink to this headline">¶</a></h1> |
| <p>Check sstable(s) for errors or corruption, for the provided table.</p> |
| <p>ref: <a class="reference external" href="https://issues.apache.org/jira/browse/CASSANDRA-5791">https://issues.apache.org/jira/browse/CASSANDRA-5791</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>sstableverify <options> <keyspace> <table></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>-e, –extended</td> |
| <td>extended verification</td> |
| </tr> |
| <tr class="row-odd"><td>-h, –help</td> |
| <td>display this help message</td> |
| </tr> |
| <tr class="row-even"><td>-v, –verbose</td> |
| <td>verbose output</td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <div class="section" id="basic-verification"> |
| <h2>Basic Verification<a class="headerlink" href="#basic-verification" title="Permalink to this headline">¶</a></h2> |
| <p>This is the basic verification. It is not a very quick process, and uses memory. You might need to increase your memory settings if you have many sstables.</p> |
| <p>Example:</p> |
| <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">sstableverify</span> <span class="n">keyspace</span> <span class="n">eventlog</span> |
| <span class="n">Verifying</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db'</span><span class="p">)</span> <span class="p">(</span><span class="mf">7.353</span><span class="n">MiB</span><span class="p">)</span> |
| <span class="n">Deserializing</span> <span class="n">sstable</span> <span class="n">metadata</span> <span class="k">for</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db'</span><span class="p">)</span> |
| <span class="n">Checking</span> <span class="n">computed</span> <span class="nb">hash</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db'</span><span class="p">)</span> |
| <span class="n">Verifying</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db'</span><span class="p">)</span> <span class="p">(</span><span class="mf">3.775</span><span class="n">MiB</span><span class="p">)</span> |
| <span class="n">Deserializing</span> <span class="n">sstable</span> <span class="n">metadata</span> <span class="k">for</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db'</span><span class="p">)</span> |
| <span class="n">Checking</span> <span class="n">computed</span> <span class="nb">hash</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db'</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="extended-verification"> |
| <h2>Extended Verification<a class="headerlink" href="#extended-verification" title="Permalink to this headline">¶</a></h2> |
| <p>During an extended verification, the individual values will be validated for errors or corruption. This of course takes more time.</p> |
| <p>Example:</p> |
| <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">root</span><span class="nd">@DC1C1</span><span class="p">:</span><span class="o">/</span><span class="c1"># sstableverify -e keyspace eventlog</span> |
| <span class="n">WARN</span> <span class="mi">14</span><span class="p">:</span><span class="mi">08</span><span class="p">:</span><span class="mi">06</span><span class="p">,</span><span class="mi">255</span> <span class="n">Only</span> <span class="mf">33.096</span><span class="n">GiB</span> <span class="n">free</span> <span class="n">across</span> <span class="nb">all</span> <span class="n">data</span> <span class="n">volumes</span><span class="o">.</span> <span class="n">Consider</span> <span class="n">adding</span> <span class="n">more</span> <span class="n">capacity</span> <span class="n">to</span> <span class="n">your</span> <span class="n">cluster</span> <span class="ow">or</span> <span class="n">removing</span> <span class="n">obsolete</span> <span class="n">snapshots</span> |
| <span class="n">Verifying</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db'</span><span class="p">)</span> <span class="p">(</span><span class="mf">7.353</span><span class="n">MiB</span><span class="p">)</span> |
| <span class="n">Deserializing</span> <span class="n">sstable</span> <span class="n">metadata</span> <span class="k">for</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db'</span><span class="p">)</span> |
| <span class="n">Checking</span> <span class="n">computed</span> <span class="nb">hash</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db'</span><span class="p">)</span> |
| <span class="n">Extended</span> <span class="n">Verify</span> <span class="n">requested</span><span class="p">,</span> <span class="n">proceeding</span> <span class="n">to</span> <span class="n">inspect</span> <span class="n">values</span> |
| <span class="n">Verify</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db'</span><span class="p">)</span> <span class="n">succeeded</span><span class="o">.</span> <span class="n">All</span> <span class="mi">33211</span> <span class="n">rows</span> <span class="n">read</span> <span class="n">successfully</span> |
| <span class="n">Verifying</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db'</span><span class="p">)</span> <span class="p">(</span><span class="mf">3.775</span><span class="n">MiB</span><span class="p">)</span> |
| <span class="n">Deserializing</span> <span class="n">sstable</span> <span class="n">metadata</span> <span class="k">for</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db'</span><span class="p">)</span> |
| <span class="n">Checking</span> <span class="n">computed</span> <span class="nb">hash</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db'</span><span class="p">)</span> |
| <span class="n">Extended</span> <span class="n">Verify</span> <span class="n">requested</span><span class="p">,</span> <span class="n">proceeding</span> <span class="n">to</span> <span class="n">inspect</span> <span class="n">values</span> |
| <span class="n">Verify</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db'</span><span class="p">)</span> <span class="n">succeeded</span><span class="o">.</span> <span class="n">All</span> <span class="mi">17068</span> <span class="n">rows</span> <span class="n">read</span> <span class="n">successfully</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="corrupted-file"> |
| <h2>Corrupted File<a class="headerlink" href="#corrupted-file" title="Permalink to this headline">¶</a></h2> |
| <p>Corrupted files are listed if they are detected by the script.</p> |
| <p>Example:</p> |
| <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">sstableverify</span> <span class="n">keyspace</span> <span class="n">eventlog</span> |
| <span class="n">Verifying</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-40-big-Data.db'</span><span class="p">)</span> <span class="p">(</span><span class="mf">7.416</span><span class="n">MiB</span><span class="p">)</span> |
| <span class="n">Deserializing</span> <span class="n">sstable</span> <span class="n">metadata</span> <span class="k">for</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-40-big-Data.db'</span><span class="p">)</span> |
| <span class="n">Checking</span> <span class="n">computed</span> <span class="nb">hash</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-40-big-Data.db'</span><span class="p">)</span> |
| <span class="n">Error</span> <span class="n">verifying</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/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-40-big-Data.db'</span><span class="p">):</span> <span class="n">Corrupted</span><span class="p">:</span> <span class="o">/</span><span class="n">var</span><span class="o">/</span><span class="n">lib</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">keyspace</span><span class="o">/</span><span class="n">eventlog</span><span class="o">-</span><span class="mi">6365332094</span><span class="n">dd11e88f324f9c503e4753</span><span class="o">/</span><span class="n">mc</span><span class="o">-</span><span class="mi">40</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> |
| </pre></div> |
| </div> |
| <p>A similar (but less verbose) tool will show the suggested actions:</p> |
| <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">nodetool</span> <span class="n">verify</span> <span class="n">keyspace</span> <span class="n">eventlog</span> |
| <span class="n">error</span><span class="p">:</span> <span class="n">Invalid</span> <span class="n">SSTable</span> <span class="o">/</span><span class="n">var</span><span class="o">/</span><span class="n">lib</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">keyspace</span><span class="o">/</span><span class="n">eventlog</span><span class="o">-</span><span class="mi">6365332094</span><span class="n">dd11e88f324f9c503e4753</span><span class="o">/</span><span class="n">mc</span><span class="o">-</span><span class="mi">40</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="p">,</span> <span class="n">please</span> <span class="n">force</span> <span class="n">repair</span> |
| </pre></div> |
| </div> |
| </div> |
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