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.metrics</div>
<h2 title="Class KeyspaceMetrics" class="title">Class KeyspaceMetrics</h2>
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<li>java.lang.Object</li>
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<li>org.apache.cassandra.metrics.KeyspaceMetrics</li>
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<pre>public class <span class="strong">KeyspaceMetrics</span>
extends java.lang.Object</pre>
<div class="block">Metrics for <a href="../../../../org/apache/cassandra/db/ColumnFamilyStore.html" title="class in org.apache.cassandra.db"><code>ColumnFamilyStore</code></a>.</div>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd"> </span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>com.yammer.metrics.core.Gauge<java.lang.Long></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#allMemtablesLiveDataSize">allMemtablesLiveDataSize</a></strong></code>
<div class="block">Total amount of live data stored in the memtables (2i and pending flush memtables included) that resides off-heap, excluding any data structure overhead</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>com.yammer.metrics.core.Gauge<java.lang.Long></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#allMemtablesOffHeapDataSize">allMemtablesOffHeapDataSize</a></strong></code>
<div class="block">Total amount of data stored in the memtables (2i and pending flush memtables included) that resides off-heap.</div>
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</tr>
<tr class="altColor">
<td class="colFirst"><code>com.yammer.metrics.core.Gauge<java.lang.Long></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#allMemtablesOnHeapDataSize">allMemtablesOnHeapDataSize</a></strong></code>
<div class="block">Total amount of data stored in the memtables (2i and pending flush memtables included) that resides on-heap.</div>
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<tr class="rowColor">
<td class="colFirst"><code>com.yammer.metrics.core.Gauge<java.lang.Long></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#bloomFilterDiskSpaceUsed">bloomFilterDiskSpaceUsed</a></strong></code>
<div class="block">Disk space used by bloom filter</div>
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<td class="colFirst"><code><a href="../../../../org/apache/cassandra/metrics/MetricNameFactory.html" title="interface in org.apache.cassandra.metrics">MetricNameFactory</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#factory">factory</a></strong></code> </td>
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<td class="colFirst"><code>com.yammer.metrics.core.Gauge<java.lang.Long></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#liveDiskSpaceUsed">liveDiskSpaceUsed</a></strong></code>
<div class="block">Disk space used by SSTables belonging to this CF</div>
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<td class="colFirst"><code>com.yammer.metrics.core.Histogram</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#liveScannedHistogram">liveScannedHistogram</a></strong></code>
<div class="block">Live cells scanned in queries on this Keyspace</div>
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<tr class="rowColor">
<td class="colFirst"><code>com.yammer.metrics.core.Gauge<java.lang.Long></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#memtableColumnsCount">memtableColumnsCount</a></strong></code>
<div class="block">Total number of columns present in the memtable.</div>
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<tr class="altColor">
<td class="colFirst"><code>com.yammer.metrics.core.Gauge<java.lang.Long></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#memtableLiveDataSize">memtableLiveDataSize</a></strong></code>
<div class="block">Total amount of live data stored in the memtable, excluding any data structure overhead</div>
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<tr class="rowColor">
<td class="colFirst"><code>com.yammer.metrics.core.Gauge<java.lang.Long></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#memtableOffHeapDataSize">memtableOffHeapDataSize</a></strong></code>
<div class="block">Total amount of data stored in the memtable that resides off-heap, including column related overhead and overwritten rows.</div>
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<tr class="altColor">
<td class="colFirst"><code>com.yammer.metrics.core.Gauge<java.lang.Long></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#memtableOnHeapDataSize">memtableOnHeapDataSize</a></strong></code>
<div class="block">Total amount of data stored in the memtable that resides on-heap, including column related overhead and overwritten rows.</div>
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<tr class="rowColor">
<td class="colFirst"><code>com.yammer.metrics.core.Gauge<java.lang.Long></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#memtableSwitchCount">memtableSwitchCount</a></strong></code>
<div class="block">Number of times flush has resulted in the memtable being switched out.</div>
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<td class="colFirst"><code>com.yammer.metrics.core.Gauge<java.lang.Long></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#pendingCompactions">pendingCompactions</a></strong></code>
<div class="block">Estimate of number of pending compactios for this CF</div>
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<td class="colFirst"><code>com.yammer.metrics.core.Gauge<java.lang.Long></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#pendingFlushes">pendingFlushes</a></strong></code>
<div class="block">Estimated number of tasks pending for this column family</div>
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<td class="colFirst"><code><a href="../../../../org/apache/cassandra/metrics/LatencyMetrics.html" title="class in org.apache.cassandra.metrics">LatencyMetrics</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#rangeLatency">rangeLatency</a></strong></code>
<div class="block">(Local) range slice metrics</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/cassandra/metrics/LatencyMetrics.html" title="class in org.apache.cassandra.metrics">LatencyMetrics</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#readLatency">readLatency</a></strong></code>
<div class="block">(Local) read metrics</div>
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<tr class="altColor">
<td class="colFirst"><code>com.yammer.metrics.core.Histogram</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#sstablesPerReadHistogram">sstablesPerReadHistogram</a></strong></code>
<div class="block">Histogram of the number of sstable data files accessed per read</div>
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<tr class="rowColor">
<td class="colFirst"><code>com.yammer.metrics.core.Histogram</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#tombstoneScannedHistogram">tombstoneScannedHistogram</a></strong></code>
<div class="block">Tombstones scanned in queries on this Keyspace</div>
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<tr class="altColor">
<td class="colFirst"><code>com.yammer.metrics.core.Gauge<java.lang.Long></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#totalDiskSpaceUsed">totalDiskSpaceUsed</a></strong></code>
<div class="block">Total disk space used by SSTables belonging to this CF, including obsolete ones waiting to be GC'd</div>
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<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/cassandra/metrics/LatencyMetrics.html" title="class in org.apache.cassandra.metrics">LatencyMetrics</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#writeLatency">writeLatency</a></strong></code>
<div class="block">(Local) write metrics</div>
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<td class="colOne"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#KeyspaceMetrics(org.apache.cassandra.db.Keyspace)">KeyspaceMetrics</a></strong>(<a href="../../../../org/apache/cassandra/db/Keyspace.html" title="class in org.apache.cassandra.db">Keyspace</a> ks)</code>
<div class="block">Creates metrics for given <a href="../../../../org/apache/cassandra/db/ColumnFamilyStore.html" title="class in org.apache.cassandra.db"><code>ColumnFamilyStore</code></a>.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/metrics/KeyspaceMetrics.html#release()">release</a></strong>()</code>
<div class="block">Release all associated metrics.</div>
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<h4>memtableLiveDataSize</h4>
<pre>public final com.yammer.metrics.core.Gauge<java.lang.Long> memtableLiveDataSize</pre>
<div class="block">Total amount of live data stored in the memtable, excluding any data structure overhead</div>
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<h4>memtableOnHeapDataSize</h4>
<pre>public final com.yammer.metrics.core.Gauge<java.lang.Long> memtableOnHeapDataSize</pre>
<div class="block">Total amount of data stored in the memtable that resides on-heap, including column related overhead and overwritten rows.</div>
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<h4>memtableOffHeapDataSize</h4>
<pre>public final com.yammer.metrics.core.Gauge<java.lang.Long> memtableOffHeapDataSize</pre>
<div class="block">Total amount of data stored in the memtable that resides off-heap, including column related overhead and overwritten rows.</div>
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<h4>allMemtablesLiveDataSize</h4>
<pre>public final com.yammer.metrics.core.Gauge<java.lang.Long> allMemtablesLiveDataSize</pre>
<div class="block">Total amount of live data stored in the memtables (2i and pending flush memtables included) that resides off-heap, excluding any data structure overhead</div>
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<h4>allMemtablesOnHeapDataSize</h4>
<pre>public final com.yammer.metrics.core.Gauge<java.lang.Long> allMemtablesOnHeapDataSize</pre>
<div class="block">Total amount of data stored in the memtables (2i and pending flush memtables included) that resides on-heap.</div>
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<h4>allMemtablesOffHeapDataSize</h4>
<pre>public final com.yammer.metrics.core.Gauge<java.lang.Long> allMemtablesOffHeapDataSize</pre>
<div class="block">Total amount of data stored in the memtables (2i and pending flush memtables included) that resides off-heap.</div>
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<h4>memtableColumnsCount</h4>
<pre>public final com.yammer.metrics.core.Gauge<java.lang.Long> memtableColumnsCount</pre>
<div class="block">Total number of columns present in the memtable.</div>
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<h4>memtableSwitchCount</h4>
<pre>public final com.yammer.metrics.core.Gauge<java.lang.Long> memtableSwitchCount</pre>
<div class="block">Number of times flush has resulted in the memtable being switched out.</div>
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<h4>pendingFlushes</h4>
<pre>public final com.yammer.metrics.core.Gauge<java.lang.Long> pendingFlushes</pre>
<div class="block">Estimated number of tasks pending for this column family</div>
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<h4>pendingCompactions</h4>
<pre>public final com.yammer.metrics.core.Gauge<java.lang.Long> pendingCompactions</pre>
<div class="block">Estimate of number of pending compactios for this CF</div>
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<h4>liveDiskSpaceUsed</h4>
<pre>public final com.yammer.metrics.core.Gauge<java.lang.Long> liveDiskSpaceUsed</pre>
<div class="block">Disk space used by SSTables belonging to this CF</div>
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<h4>totalDiskSpaceUsed</h4>
<pre>public final com.yammer.metrics.core.Gauge<java.lang.Long> totalDiskSpaceUsed</pre>
<div class="block">Total disk space used by SSTables belonging to this CF, including obsolete ones waiting to be GC'd</div>
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<h4>bloomFilterDiskSpaceUsed</h4>
<pre>public final com.yammer.metrics.core.Gauge<java.lang.Long> bloomFilterDiskSpaceUsed</pre>
<div class="block">Disk space used by bloom filter</div>
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<h4>readLatency</h4>
<pre>public final <a href="../../../../org/apache/cassandra/metrics/LatencyMetrics.html" title="class in org.apache.cassandra.metrics">LatencyMetrics</a> readLatency</pre>
<div class="block">(Local) read metrics</div>
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<h4>rangeLatency</h4>
<pre>public final <a href="../../../../org/apache/cassandra/metrics/LatencyMetrics.html" title="class in org.apache.cassandra.metrics">LatencyMetrics</a> rangeLatency</pre>
<div class="block">(Local) range slice metrics</div>
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<h4>writeLatency</h4>
<pre>public final <a href="../../../../org/apache/cassandra/metrics/LatencyMetrics.html" title="class in org.apache.cassandra.metrics">LatencyMetrics</a> writeLatency</pre>
<div class="block">(Local) write metrics</div>
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<h4>sstablesPerReadHistogram</h4>
<pre>public final com.yammer.metrics.core.Histogram sstablesPerReadHistogram</pre>
<div class="block">Histogram of the number of sstable data files accessed per read</div>
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<h4>tombstoneScannedHistogram</h4>
<pre>public final com.yammer.metrics.core.Histogram tombstoneScannedHistogram</pre>
<div class="block">Tombstones scanned in queries on this Keyspace</div>
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<h4>liveScannedHistogram</h4>
<pre>public final com.yammer.metrics.core.Histogram liveScannedHistogram</pre>
<div class="block">Live cells scanned in queries on this Keyspace</div>
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<h4>factory</h4>
<pre>public final <a href="../../../../org/apache/cassandra/metrics/MetricNameFactory.html" title="interface in org.apache.cassandra.metrics">MetricNameFactory</a> factory</pre>
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<h4>KeyspaceMetrics</h4>
<pre>public KeyspaceMetrics(<a href="../../../../org/apache/cassandra/db/Keyspace.html" title="class in org.apache.cassandra.db">Keyspace</a> ks)</pre>
<div class="block">Creates metrics for given <a href="../../../../org/apache/cassandra/db/ColumnFamilyStore.html" title="class in org.apache.cassandra.db"><code>ColumnFamilyStore</code></a>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>ks</code> - Keyspace to measure metrics</dd></dl>
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<h4>release</h4>
<pre>public void release()</pre>
<div class="block">Release all associated metrics.</div>
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