cassandra-server
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A thin Javascript wrapper around Apache Cassandra to provide out of the box server support
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<div class="subTitle">org.apache.cassandra.io.sstable</div>
<h2 title="Class SSTableRewriter" class="title">Class SSTableRewriter</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<li>org.apache.cassandra.io.sstable.SSTableRewriter</li>
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<pre>public class <span class="strong">SSTableRewriter</span>
extends java.lang.Object</pre>
<div class="block">Wraps one or more writers as output for rewriting one or more readers: every sstable_preemptive_open_interval_in_mb
we look in the summary we're collecting for the latest writer for the penultimate key that we know to have been fully
flushed to the index file, and then double check that the key is fully present in the flushed data file.
Then we move the starts of each reader forwards to that point, replace them in the datatracker, and attach a runnable
for on-close (i.e. when all references expire) that drops the page cache prior to that key position
hard-links are created for each partially written sstable so that readers opened against them continue to work past
the rename of the temporary file, which is deleted once all readers against the hard-link have been closed.
If for any reason the writer is rolled over, we immediately rename and fully expose the completed file in the DataTracker.
On abort we restore the original lower bounds to the existing readers and delete any temporary files we had in progress,
but leave any hard-links in place for the readers we opened to cleanup when they're finished as we would had we finished
successfully.</div>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><strong><a href="../../../../../org/apache/cassandra/io/sstable/SSTableRewriter.html#SSTableRewriter(org.apache.cassandra.db.ColumnFamilyStore,%20java.util.Set,%20long,%20org.apache.cassandra.db.compaction.OperationType,%20boolean)">SSTableRewriter</a></strong>(<a href="../../../../../org/apache/cassandra/db/ColumnFamilyStore.html" title="class in org.apache.cassandra.db">ColumnFamilyStore</a> cfs,
java.util.Set<<a href="../../../../../org/apache/cassandra/io/sstable/SSTableReader.html" title="class in org.apache.cassandra.io.sstable">SSTableReader</a>> rewriting,
long maxAge,
<a href="../../../../../org/apache/cassandra/db/compaction/OperationType.html" title="enum in org.apache.cassandra.db.compaction">OperationType</a> rewriteType,
boolean isOffline)</code> </td>
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<caption><span>Methods</span><span class="tabEnd"> </span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/sstable/SSTableRewriter.html#abort()">abort</a></strong>()</code> </td>
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<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/cassandra/db/RowIndexEntry.html" title="class in org.apache.cassandra.db">RowIndexEntry</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/sstable/SSTableRewriter.html#append(org.apache.cassandra.db.compaction.AbstractCompactedRow)">append</a></strong>(<a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactedRow.html" title="class in org.apache.cassandra.db.compaction">AbstractCompactedRow</a> row)</code> </td>
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<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/cassandra/io/sstable/SSTableWriter.html" title="class in org.apache.cassandra.io.sstable">SSTableWriter</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/sstable/SSTableRewriter.html#currentWriter()">currentWriter</a></strong>()</code> </td>
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<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/sstable/SSTableRewriter.html#finish()">finish</a></strong>()</code> </td>
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<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/sstable/SSTableRewriter.html#finish(boolean)">finish</a></strong>(boolean cleanupOldReaders)</code> </td>
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<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/sstable/SSTableRewriter.html#finish(boolean,%20long)">finish</a></strong>(boolean cleanupOldReaders,
long repairedAt)</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/sstable/SSTableRewriter.html#finish(long)">finish</a></strong>(long repairedAt)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.util.List<<a href="../../../../../org/apache/cassandra/io/sstable/SSTableReader.html" title="class in org.apache.cassandra.io.sstable">SSTableReader</a>></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/sstable/SSTableRewriter.html#finished()">finished</a></strong>()</code> </td>
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<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/sstable/SSTableRewriter.html#switchWriter(org.apache.cassandra.io.sstable.SSTableWriter)">switchWriter</a></strong>(<a href="../../../../../org/apache/cassandra/io/sstable/SSTableWriter.html" title="class in org.apache.cassandra.io.sstable">SSTableWriter</a> newWriter)</code> </td>
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<td class="colFirst"><code><a href="../../../../../org/apache/cassandra/db/RowIndexEntry.html" title="class in org.apache.cassandra.db">RowIndexEntry</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/sstable/SSTableRewriter.html#tryAppend(org.apache.cassandra.db.compaction.AbstractCompactedRow)">tryAppend</a></strong>(<a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactedRow.html" title="class in org.apache.cassandra.db.compaction">AbstractCompactedRow</a> row)</code> </td>
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<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h4>SSTableRewriter</h4>
<pre>public SSTableRewriter(<a href="../../../../../org/apache/cassandra/db/ColumnFamilyStore.html" title="class in org.apache.cassandra.db">ColumnFamilyStore</a> cfs,
java.util.Set<<a href="../../../../../org/apache/cassandra/io/sstable/SSTableReader.html" title="class in org.apache.cassandra.io.sstable">SSTableReader</a>> rewriting,
long maxAge,
<a href="../../../../../org/apache/cassandra/db/compaction/OperationType.html" title="enum in org.apache.cassandra.db.compaction">OperationType</a> rewriteType,
boolean isOffline)</pre>
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<pre>public <a href="../../../../../org/apache/cassandra/io/sstable/SSTableWriter.html" title="class in org.apache.cassandra.io.sstable">SSTableWriter</a> currentWriter()</pre>
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<h4>append</h4>
<pre>public <a href="../../../../../org/apache/cassandra/db/RowIndexEntry.html" title="class in org.apache.cassandra.db">RowIndexEntry</a> append(<a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactedRow.html" title="class in org.apache.cassandra.db.compaction">AbstractCompactedRow</a> row)</pre>
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<h4>tryAppend</h4>
<pre>public <a href="../../../../../org/apache/cassandra/db/RowIndexEntry.html" title="class in org.apache.cassandra.db">RowIndexEntry</a> tryAppend(<a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactedRow.html" title="class in org.apache.cassandra.db.compaction">AbstractCompactedRow</a> row)</pre>
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<h4>abort</h4>
<pre>public void abort()</pre>
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<pre>public void switchWriter(<a href="../../../../../org/apache/cassandra/io/sstable/SSTableWriter.html" title="class in org.apache.cassandra.io.sstable">SSTableWriter</a> newWriter)</pre>
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<pre>public void finish()</pre>
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<pre>public void finish(long repairedAt)</pre>
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<pre>public void finish(boolean cleanupOldReaders)</pre>
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<pre>public void finish(boolean cleanupOldReaders,
long repairedAt)</pre>
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<pre>public java.util.List<<a href="../../../../../org/apache/cassandra/io/sstable/SSTableReader.html" title="class in org.apache.cassandra.io.sstable">SSTableReader</a>> finished()</pre>
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