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| <h2 title="Class HistogramMetric" class="title">Class HistogramMetric</h2> |
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| <li>org.apache.storm.metrics.hdrhistogram.HistogramMetric</li> |
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| <pre>public class <span class="typeNameLabel">HistogramMetric</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> |
| implements <a href="../../../../../org/apache/storm/metric/api/IMetric.html" title="interface in org.apache.storm.metric.api">IMetric</a></pre> |
| <div class="block"><p>A metric wrapping an HdrHistogram.</p></div> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/metrics/hdrhistogram/HistogramMetric.html#HistogramMetric-int-">HistogramMetric</a></span>(int numberOfSignificantValueDigits)</code> </td> |
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| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/metrics/hdrhistogram/HistogramMetric.html#HistogramMetric-java.lang.Long-int-">HistogramMetric</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a> highestTrackableValue, |
| int numberOfSignificantValueDigits)</code> </td> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/metrics/hdrhistogram/HistogramMetric.html#HistogramMetric-java.lang.Long-java.lang.Long-int-">HistogramMetric</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a> lowestDiscernibleValue, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a> highestTrackableValue, |
| int numberOfSignificantValueDigits)</code> |
| <div class="block">(From the Constructor of Histogram) Construct a Histogram given the Lowest and Highest values to be tracked and a number of significant decimal digits.</div> |
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| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/metrics/hdrhistogram/HistogramMetric.html#getValueAndReset--">getValueAndReset</a></span>()</code> |
| <div class="block">Get value and reset.</div> |
| </td> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/metrics/hdrhistogram/HistogramMetric.html#recordValue-long-">recordValue</a></span>(long val)</code> </td> |
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| <h4>HistogramMetric</h4> |
| <pre>public HistogramMetric(int numberOfSignificantValueDigits)</pre> |
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| <h4>HistogramMetric</h4> |
| <pre>public HistogramMetric(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a> highestTrackableValue, |
| int numberOfSignificantValueDigits)</pre> |
| </li> |
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| <a name="HistogramMetric-java.lang.Long-java.lang.Long-int-"> |
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| </a> |
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| <h4>HistogramMetric</h4> |
| <pre>public HistogramMetric(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a> lowestDiscernibleValue, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a> highestTrackableValue, |
| int numberOfSignificantValueDigits)</pre> |
| <div class="block"><p>(From the Constructor of Histogram) Construct a Histogram given the Lowest and Highest values to be tracked and a number of significant decimal digits. Providing a lowestDiscernibleValue is useful is situations where the units used for the histogram’s values are much smaller that the minimal accuracy required. E.g. when tracking time values stated in nanosecond units, where the minimal accuracy required is a microsecond, the proper value for lowestDiscernibleValue would be 1000.</p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>lowestDiscernibleValue</code> - The lowest value that can be discerned (distinguished from 0) by the histogram. Must be a positive integer that is >= 1. May be internally rounded down to nearest power of 2 (if null 1 is used).</dd> |
| <dd><code>highestTrackableValue</code> - The highest value to be tracked by the histogram. Must be a positive integer that is >= (2 * lowestDiscernibleValue). (if null 2 * lowestDiscernibleValue is used and auto-resize is enabled)</dd> |
| <dd><code>numberOfSignificantValueDigits</code> - Specifies the precision to use. This is the number of significant decimal digits to which the histogram will maintain value resolution and separation. Must be a non-negative integer between 0 and 5.</dd> |
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| <pre>public <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> getValueAndReset()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/storm/metric/api/IMetric.html#getValueAndReset--">IMetric</a></code></span></div> |
| <div class="block"><p>Get value and reset.</p></div> |
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| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/storm/metric/api/IMetric.html#getValueAndReset--">getValueAndReset</a></code> in interface <code><a href="../../../../../org/apache/storm/metric/api/IMetric.html" title="interface in org.apache.storm.metric.api">IMetric</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an object that will be sent sent to <code>IMetricsConsumer#handleDataPoints(org.apache.storm.metric.api.IMetricsConsumer |
| .TaskInfo, |
| java.util.Collection)</code>. If null is returned nothing will be sent. If this value can be reset, like with a counter, a side effect of calling this should be that the value is reset.</dd> |
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