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| <h2 title="Class BalancerDecisionQueueService" class="title">Class BalancerDecisionQueueService</h2> |
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| <ul class="inheritance"> |
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| <li>org.apache.hadoop.hbase.namequeues.impl.BalancerDecisionQueueService</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html" title="interface in org.apache.hadoop.hbase.namequeues">NamedQueueService</a></dd> |
| </dl> |
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| <br> |
| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#line.47">BalancerDecisionQueueService</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/namequeues/NamedQueueService.html" title="interface in org.apache.hadoop.hbase.namequeues">NamedQueueService</a></pre> |
| <div class="block">In-memory Queue service provider for Balancer Decision events</div> |
| </li> |
| </ul> |
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| <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 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/namequeues/impl/BalancerDecisionQueueService.html#BALANCER_DECISION_QUEUE_SIZE">BALANCER_DECISION_QUEUE_SIZE</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Queue.html?is-external=true" title="class or interface in java.util">Queue</a><org.apache.hadoop.hbase.shaded.protobuf.generated.RecentLogs.BalancerDecision></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#balancerDecisionQueue">balancerDecisionQueue</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#DEFAULT_BALANCER_DECISION_QUEUE_SIZE">DEFAULT_BALANCER_DECISION_QUEUE_SIZE</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#isBalancerDecisionRecording">isBalancerDecisionRecording</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#LOG">LOG</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#REGION_PLANS_THRESHOLD_PER_BALANCER">REGION_PLANS_THRESHOLD_PER_BALANCER</a></span></code> </td> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#BalancerDecisionQueueService-org.apache.hadoop.conf.Configuration-">BalancerDecisionQueueService</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#clearNamedQueue--">clearNamedQueue</a></span>()</code> |
| <div class="block">Cleans up queues maintained by services.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#consumeEventFromDisruptor-org.apache.hadoop.hbase.namequeues.NamedQueuePayload-">consumeEventFromDisruptor</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueuePayload.html" title="class in org.apache.hadoop.hbase.namequeues">NamedQueuePayload</a> namedQueuePayload)</code> |
| <div class="block">This implementation is generic for consuming records from LMAX |
| disruptor and inserts records to EvictingQueue which is maintained by each |
| ringbuffer provider.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueuePayload.NamedQueueEvent.html" title="enum in org.apache.hadoop.hbase.namequeues">NamedQueuePayload.NamedQueueEvent</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#getEvent--">getEvent</a></span>()</code> |
| <div class="block">Retrieve event type for NamedQueueService implementation.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/response/NamedQueueGetResponse.html" title="class in org.apache.hadoop.hbase.namequeues.response">NamedQueueGetResponse</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#getNamedQueueRecords-org.apache.hadoop.hbase.namequeues.request.NamedQueueGetRequest-">getNamedQueueRecords</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/namequeues/request/NamedQueueGetRequest.html" title="class in org.apache.hadoop.hbase.namequeues.request">NamedQueueGetRequest</a> request)</code> |
| <div class="block">Retrieve in memory queue records from ringbuffer</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#persistAll--">persistAll</a></span>()</code> |
| <div class="block">Add all in memory queue records to system table.</div> |
| </td> |
| </tr> |
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| <h3>Methods inherited from class java.lang.<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></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
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| </div> |
| <div class="details"> |
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| <!-- ============ FIELD DETAIL =========== --> |
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| <h3>Field Detail</h3> |
| <a name="LOG"> |
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| <h4>LOG</h4> |
| <pre>private static final org.slf4j.Logger <a href="../../../../../../src-html/org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#line.49">LOG</a></pre> |
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| <h4>isBalancerDecisionRecording</h4> |
| <pre>private final boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#line.51">isBalancerDecisionRecording</a></pre> |
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| <h4>BALANCER_DECISION_QUEUE_SIZE</h4> |
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| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.namequeues.impl.BalancerDecisionQueueService.BALANCER_DECISION_QUEUE_SIZE">Constant Field Values</a></dd> |
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| <h4>DEFAULT_BALANCER_DECISION_QUEUE_SIZE</h4> |
| <pre>private static final int <a href="../../../../../../src-html/org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#line.55">DEFAULT_BALANCER_DECISION_QUEUE_SIZE</a></pre> |
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| <a name="balancerDecisionQueue"> |
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| <h4>balancerDecisionQueue</h4> |
| <pre>private final <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Queue.html?is-external=true" title="class or interface in java.util">Queue</a><org.apache.hadoop.hbase.shaded.protobuf.generated.RecentLogs.BalancerDecision> <a href="../../../../../../src-html/org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#line.59">balancerDecisionQueue</a></pre> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <ul class="blockList"> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="BalancerDecisionQueueService-org.apache.hadoop.conf.Configuration-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
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| <h4>BalancerDecisionQueueService</h4> |
| <pre>public <a href="../../../../../../src-html/org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#line.61">BalancerDecisionQueueService</a>(org.apache.hadoop.conf.Configuration conf)</pre> |
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| <h3>Method Detail</h3> |
| <a name="getEvent--"> |
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| <h4>getEvent</h4> |
| <pre>public <a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueuePayload.NamedQueueEvent.html" title="enum in org.apache.hadoop.hbase.namequeues">NamedQueuePayload.NamedQueueEvent</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#line.76">getEvent</a>()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html#getEvent--">NamedQueueService</a></code></span></div> |
| <div class="block">Retrieve event type for NamedQueueService implementation.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html#getEvent--">getEvent</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html" title="interface in org.apache.hadoop.hbase.namequeues">NamedQueueService</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueuePayload.NamedQueueEvent.html" title="enum in org.apache.hadoop.hbase.namequeues"><code>NamedQueuePayload.NamedQueueEvent</code></a></dd> |
| </dl> |
| </li> |
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| </a> |
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| <h4>consumeEventFromDisruptor</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#line.81">consumeEventFromDisruptor</a>(<a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueuePayload.html" title="class in org.apache.hadoop.hbase.namequeues">NamedQueuePayload</a> namedQueuePayload)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html#consumeEventFromDisruptor-org.apache.hadoop.hbase.namequeues.NamedQueuePayload-">NamedQueueService</a></code></span></div> |
| <div class="block">This implementation is generic for consuming records from LMAX |
| disruptor and inserts records to EvictingQueue which is maintained by each |
| ringbuffer provider.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html#consumeEventFromDisruptor-org.apache.hadoop.hbase.namequeues.NamedQueuePayload-">consumeEventFromDisruptor</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html" title="interface in org.apache.hadoop.hbase.namequeues">NamedQueueService</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>namedQueuePayload</code> - namedQueue payload from disruptor ring buffer</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="clearNamedQueue--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>clearNamedQueue</h4> |
| <pre>public boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#line.114">clearNamedQueue</a>()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html#clearNamedQueue--">NamedQueueService</a></code></span></div> |
| <div class="block">Cleans up queues maintained by services.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html#clearNamedQueue--">clearNamedQueue</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html" title="interface in org.apache.hadoop.hbase.namequeues">NamedQueueService</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if slow log payloads are cleaned up, false otherwise</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getNamedQueueRecords-org.apache.hadoop.hbase.namequeues.request.NamedQueueGetRequest-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getNamedQueueRecords</h4> |
| <pre>public <a href="../../../../../../org/apache/hadoop/hbase/namequeues/response/NamedQueueGetResponse.html" title="class in org.apache.hadoop.hbase.namequeues.response">NamedQueueGetResponse</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#line.124">getNamedQueueRecords</a>(<a href="../../../../../../org/apache/hadoop/hbase/namequeues/request/NamedQueueGetRequest.html" title="class in org.apache.hadoop.hbase.namequeues.request">NamedQueueGetRequest</a> request)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html#getNamedQueueRecords-org.apache.hadoop.hbase.namequeues.request.NamedQueueGetRequest-">NamedQueueService</a></code></span></div> |
| <div class="block">Retrieve in memory queue records from ringbuffer</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html#getNamedQueueRecords-org.apache.hadoop.hbase.namequeues.request.NamedQueueGetRequest-">getNamedQueueRecords</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html" title="interface in org.apache.hadoop.hbase.namequeues">NamedQueueService</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>request</code> - namedQueue request with event type</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>queue records from ringbuffer after filter (if applied)</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="persistAll--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>persistAll</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/namequeues/impl/BalancerDecisionQueueService.html#line.146">persistAll</a>()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html#persistAll--">NamedQueueService</a></code></span></div> |
| <div class="block">Add all in memory queue records to system table. The implementors can use system table |
| or direct HDFS file or ZK as persistence system.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html#persistAll--">persistAll</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueService.html" title="interface in org.apache.hadoop.hbase.namequeues">NamedQueueService</a></code></dd> |
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