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| <div class="subTitle">org.apache.hadoop.hbase.regionserver</div> |
| <h2 title="Class DefaultHeapMemoryTuner" class="title">Class DefaultHeapMemoryTuner</h2> |
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| <li>org.apache.hadoop.hbase.regionserver.DefaultHeapMemoryTuner</li> |
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| <dd>org.apache.hadoop.conf.Configurable, <a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryTuner.html" title="interface in org.apache.hadoop.hbase.regionserver">HeapMemoryTuner</a></dd> |
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| <pre>@InterfaceAudience.Private |
| class <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#line.71">DefaultHeapMemoryTuner</a> |
| 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/hadoop/hbase/regionserver/HeapMemoryTuner.html" title="interface in org.apache.hadoop.hbase.regionserver">HeapMemoryTuner</a></pre> |
| <div class="block">The default implementation for the HeapMemoryTuner. This will do statistical checks on |
| number of evictions, cache misses and flushes to decide whether there should be changes |
| in the heap size of memstore/block cache. During each tuner operation tuner takes a step |
| which can either be INCREASE_BLOCK_CACHE_SIZE (increase block cache size), |
| INCREASE_MEMSTORE_SIZE (increase memstore size) and by default it is NEUTRAL (no change). |
| We say block cache is sufficient when there is no block cache eviction at all or major amount of |
| memory allocated to block cache is empty, similarly we say memory allocated for memstore is |
| sufficient when there is no memstore flushes because of heap pressure or major amount of |
| memory allocated to memstore is empty. If both are sufficient we do nothing, if exactly one of |
| them is found to be sufficient we decrease its size by <i>step</i> and increase the other by |
| same amount. If none of them is sufficient we do statistical analysis on number of cache misses |
| and flushes to determine tuner direction. Based on these statistics we decide the tuner |
| direction. If we are not confident about which step direction to take we do nothing and wait for |
| next iteration. On expectation we will be tuning for at least 10% tuner calls. The number of |
| past periods to consider for statistics calculation can be specified in config by |
| <i>hbase.regionserver.heapmemory.autotuner.lookup.periods</i>. Also these many initial calls to |
| tuner will be ignored (cache is warming up and we leave the system to reach steady state). |
| After the tuner takes a step, in next call we insure that last call was indeed helpful and did |
| not do us any harm. If not then we revert the previous step. The step size is dynamic and it |
| changes based on current and past few tuning directions and their step sizes. We maintain a |
| parameter <i>decayingAvgTunerStepSize</i> which is sum of past tuner steps with |
| sign(positive for increase in memstore and negative for increase in block cache). But rather |
| than simple sum it is calculated by giving more priority to the recent tuning steps. |
| When last few tuner steps were NETURAL then we assume we are restarting the tuning process and |
| step size is updated to maximum allowed size which can be specified in config by |
| <i>hbase.regionserver.heapmemory.autotuner.step.max</i>. If in a particular tuning operation |
| the step direction is opposite to what indicated by <i>decayingTunerStepSizeSum</i> |
| we decrease the step size by half. Step size does not change in other tuning operations. |
| When step size gets below a certain threshold then the following tuner operations are |
| considered to be neutral. The minimum step size can be specified in config by |
| <i>hbase.regionserver.heapmemory.autotuner.step.min</i>.</div> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.StepDirection.html" title="enum in org.apache.hadoop.hbase.regionserver">DefaultHeapMemoryTuner.StepDirection</a></span></code> </td> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#blockCachePercentMaxRange">blockCachePercentMaxRange</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#blockCachePercentMinRange">blockCachePercentMinRange</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private org.apache.hadoop.conf.Configuration</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#conf">conf</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#decayingTunerStepSizeSum">decayingTunerStepSizeSum</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#DEFAULT_LOOKUP_PERIODS">DEFAULT_LOOKUP_PERIODS</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#DEFAULT_MAX_STEP_VALUE">DEFAULT_MAX_STEP_VALUE</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#DEFAULT_MIN_STEP_VALUE">DEFAULT_MIN_STEP_VALUE</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#DEFAULT_NUM_PERIODS_IGNORED">DEFAULT_NUM_PERIODS_IGNORED</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#DEFAULT_SUFFICIENT_MEMORY_LEVEL_VALUE">DEFAULT_SUFFICIENT_MEMORY_LEVEL_VALUE</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#globalMemStoreLimitLowMarkPercent">globalMemStoreLimitLowMarkPercent</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#globalMemStorePercentMaxRange">globalMemStorePercentMaxRange</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#globalMemStorePercentMinRange">globalMemStorePercentMinRange</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#ignoreInitialPeriods">ignoreInitialPeriods</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#LOG">LOG</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#LOOKUP_PERIODS_KEY">LOOKUP_PERIODS_KEY</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#MAX_STEP_KEY">MAX_STEP_KEY</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#maximumStepSize">maximumStepSize</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#MIN_STEP_KEY">MIN_STEP_KEY</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#minimumStepSize">minimumStepSize</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static <a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryManager.TunerResult.html" title="class in org.apache.hadoop.hbase.regionserver">HeapMemoryManager.TunerResult</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#NO_OP_TUNER_RESULT">NO_OP_TUNER_RESULT</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#NUM_PERIODS_TO_IGNORE">NUM_PERIODS_TO_IGNORE</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#numPeriodsToIgnore">numPeriodsToIgnore</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.StepDirection.html" title="enum in org.apache.hadoop.hbase.regionserver">DefaultHeapMemoryTuner.StepDirection</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#prevTuneDirection">prevTuneDirection</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/util/RollingStatCalculator.html" title="class in org.apache.hadoop.hbase.util">RollingStatCalculator</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#rollingStatsForCacheMisses">rollingStatsForCacheMisses</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/util/RollingStatCalculator.html" title="class in org.apache.hadoop.hbase.util">RollingStatCalculator</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#rollingStatsForEvictions">rollingStatsForEvictions</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/util/RollingStatCalculator.html" title="class in org.apache.hadoop.hbase.util">RollingStatCalculator</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#rollingStatsForFlushes">rollingStatsForFlushes</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/util/RollingStatCalculator.html" title="class in org.apache.hadoop.hbase.util">RollingStatCalculator</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#rollingStatsForTunerSteps">rollingStatsForTunerSteps</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#step">step</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#SUFFICIENT_MEMORY_LEVEL_KEY">SUFFICIENT_MEMORY_LEVEL_KEY</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#sufficientMemoryLevel">sufficientMemoryLevel</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryManager.TunerResult.html" title="class in org.apache.hadoop.hbase.regionserver">HeapMemoryManager.TunerResult</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#TUNER_RESULT">TUNER_RESULT</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#TUNER_STEP_EPS">TUNER_STEP_EPS</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#tunerLookupPeriods">tunerLookupPeriods</a></span></code> </td> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#DefaultHeapMemoryTuner--">DefaultHeapMemoryTuner</a></span>()</code> </td> |
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| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#addToRollingStats-org.apache.hadoop.hbase.regionserver.HeapMemoryManager.TunerContext-">addToRollingStats</a></span>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryManager.TunerContext.html" title="class in org.apache.hadoop.hbase.regionserver">HeapMemoryManager.TunerContext</a> context)</code> |
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| <td class="colFirst"><code>org.apache.hadoop.conf.Configuration</code></td> |
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| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.StepDirection.html" title="enum in org.apache.hadoop.hbase.regionserver">DefaultHeapMemoryTuner.StepDirection</a></code></td> |
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| <div class="block">Determine best direction of tuning base on given context.</div> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#setConf-org.apache.hadoop.conf.Configuration-">setConf</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> |
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| <td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryManager.TunerResult.html" title="class in org.apache.hadoop.hbase.regionserver">HeapMemoryManager.TunerResult</a></code></td> |
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| <a name="tune-org.apache.hadoop.hbase.regionserver.HeapMemoryManager.TunerContext-"> |
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| </a> |
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| <h4>tune</h4> |
| <pre>public <a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryManager.TunerResult.html" title="class in org.apache.hadoop.hbase.regionserver">HeapMemoryManager.TunerResult</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#line.129">tune</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryManager.TunerContext.html" title="class in org.apache.hadoop.hbase.regionserver">HeapMemoryManager.TunerContext</a> context)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryTuner.html#tune-org.apache.hadoop.hbase.regionserver.HeapMemoryManager.TunerContext-">HeapMemoryTuner</a></code></span></div> |
| <div class="block">Perform the heap memory tuning operation.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryTuner.html#tune-org.apache.hadoop.hbase.regionserver.HeapMemoryManager.TunerContext-">tune</a></code> in interface <code><a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryTuner.html" title="interface in org.apache.hadoop.hbase.regionserver">HeapMemoryTuner</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>TunerResult</code> including the heap percentage for memstore and block cache</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getTuneDirection-org.apache.hadoop.hbase.regionserver.HeapMemoryManager.TunerContext-"> |
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| <h4>getTuneDirection</h4> |
| <pre>private <a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.StepDirection.html" title="enum in org.apache.hadoop.hbase.regionserver">DefaultHeapMemoryTuner.StepDirection</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#line.236">getTuneDirection</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryManager.TunerContext.html" title="class in org.apache.hadoop.hbase.regionserver">HeapMemoryManager.TunerContext</a> context)</pre> |
| <div class="block">Determine best direction of tuning base on given context.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>context</code> - The tuner context.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>tuning direction.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="addToRollingStats-org.apache.hadoop.hbase.regionserver.HeapMemoryManager.TunerContext-"> |
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| <h4>addToRollingStats</h4> |
| <pre>private void <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#line.360">addToRollingStats</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryManager.TunerContext.html" title="class in org.apache.hadoop.hbase.regionserver">HeapMemoryManager.TunerContext</a> context)</pre> |
| <div class="block">Add the given context to the rolling tuner stats.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>context</code> - The tuner context.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getConf--"> |
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| <h4>getConf</h4> |
| <pre>public org.apache.hadoop.conf.Configuration <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#line.368">getConf</a>()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>getConf</code> in interface <code>org.apache.hadoop.conf.Configurable</code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setConf-org.apache.hadoop.conf.Configuration-"> |
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| <h4>setConf</h4> |
| <pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DefaultHeapMemoryTuner.html#line.373">setConf</a>(org.apache.hadoop.conf.Configuration conf)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>setConf</code> in interface <code>org.apache.hadoop.conf.Configurable</code></dd> |
| </dl> |
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