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| <div class="subTitle">org.apache.hadoop.hbase.master.normalizer</div> |
| <h2 title="Class RegionNormalizerWorkQueue" class="title">Class RegionNormalizerWorkQueue<E></h2> |
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| <li>org.apache.hadoop.hbase.master.normalizer.RegionNormalizerWorkQueue<E></li> |
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| <pre>@InterfaceAudience.Private |
| class <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.46">RegionNormalizerWorkQueue</a><E> |
| 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></pre> |
| <div class="block">A specialized collection that holds pending work for the <a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorker.html" title="class in org.apache.hadoop.hbase.master.normalizer"><code>RegionNormalizerWorker</code></a>. It is |
| an ordered collection class that has the following properties: |
| <ul> |
| <li>Guarantees uniqueness of elements, as a <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util"><code>Set</code></a>.</li> |
| <li>Consumers retrieve objects from the head, as a <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Queue.html?is-external=true" title="class or interface in java.util"><code>Queue</code></a>, via <a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#take--"><code>take()</code></a>.</li> |
| <li>Work is retrieved on a FIFO policy.</li> |
| <li>Work retrieval blocks the calling thread until new work is available, as a |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/BlockingQueue.html?is-external=true" title="class or interface in java.util.concurrent"><code>BlockingQueue</code></a>.</li> |
| <li>Allows a producer to insert an item at the head of the queue, if desired.</li> |
| </ul> |
| Assumes low-frequency and low-parallelism concurrent access, so protects state using a |
| simplistic synchronization strategy.</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- =========== FIELD SUMMARY =========== --> |
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| <h3>Field Summary</h3> |
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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 <a href="https://docs.oracle.com/javase/8/docs/api/java/util/LinkedHashSet.html?is-external=true" title="class or interface in java.util">LinkedHashSet</a><<a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html" title="type parameter in RegionNormalizerWorkQueue">E</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#delegate">delegate</a></span></code> |
| <div class="block">Underlying storage structure that gives us the Set behavior and FIFO retrieval policy.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/Condition.html?is-external=true" title="class or interface in java.util.concurrent.locks">Condition</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#notEmpty">notEmpty</a></span></code> |
| <div class="block">Wait queue for waiting takes</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/ReentrantLock.html?is-external=true" title="class or interface in java.util.concurrent.locks">ReentrantLock</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#putLock">putLock</a></span></code> |
| <div class="block">Lock held by put, offer, etc</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/ReentrantLock.html?is-external=true" title="class or interface in java.util.concurrent.locks">ReentrantLock</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#takeLock">takeLock</a></span></code> |
| <div class="block">Lock held by take, poll, etc</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
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| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#RegionNormalizerWorkQueue--">RegionNormalizerWorkQueue</a></span>()</code> </td> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <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> |
| <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>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#clear--">clear</a></span>()</code> |
| <div class="block">Atomically removes all of the elements from this queue.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#fullyLock--">fullyLock</a></span>()</code> |
| <div class="block">Locks to prevent both puts and takes.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#fullyUnlock--">fullyUnlock</a></span>()</code> |
| <div class="block">Unlocks to allow both puts and takes.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#put-E-">put</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html" title="type parameter in RegionNormalizerWorkQueue">E</a> e)</code> |
| <div class="block">Inserts the specified element at the tail of the queue, if it's not already present.</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/master/normalizer/RegionNormalizerWorkQueue.html#putAll-java.util.Collection-">putAll</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><? extends <a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html" title="type parameter in RegionNormalizerWorkQueue">E</a>> c)</code> |
| <div class="block">Inserts the specified elements at the tail of the queue.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#putAllFirst-java.util.Collection-">putAllFirst</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><? extends <a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html" title="type parameter in RegionNormalizerWorkQueue">E</a>> c)</code> |
| <div class="block">Inserts the specified elements at the head of the queue.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#putFirst-E-">putFirst</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html" title="type parameter in RegionNormalizerWorkQueue">E</a> e)</code> |
| <div class="block">Inserts the specified element at the head of the queue.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#signalNotEmpty--">signalNotEmpty</a></span>()</code> |
| <div class="block">Signals a waiting take.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#size--">size</a></span>()</code> |
| <div class="block">Returns the number of elements in this queue.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html" title="type parameter in RegionNormalizerWorkQueue">E</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#take--">take</a></span>()</code> |
| <div class="block">Retrieves and removes the head of this queue, waiting if necessary |
| until an element becomes available.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><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/master/normalizer/RegionNormalizerWorkQueue.html#toString--">toString</a></span>()</code> </td> |
| </tr> |
| </table> |
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| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
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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#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> |
| </li> |
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| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
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| <h3>Field Detail</h3> |
| <a name="delegate"> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>delegate</h4> |
| <pre>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/LinkedHashSet.html?is-external=true" title="class or interface in java.util">LinkedHashSet</a><<a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html" title="type parameter in RegionNormalizerWorkQueue">E</a>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.49">delegate</a></pre> |
| <div class="block">Underlying storage structure that gives us the Set behavior and FIFO retrieval policy.</div> |
| </li> |
| </ul> |
| <a name="takeLock"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>takeLock</h4> |
| <pre>private final <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/ReentrantLock.html?is-external=true" title="class or interface in java.util.concurrent.locks">ReentrantLock</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.55">takeLock</a></pre> |
| <div class="block">Lock held by take, poll, etc</div> |
| </li> |
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| <a name="notEmpty"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>notEmpty</h4> |
| <pre>private final <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/Condition.html?is-external=true" title="class or interface in java.util.concurrent.locks">Condition</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.58">notEmpty</a></pre> |
| <div class="block">Wait queue for waiting takes</div> |
| </li> |
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| <a name="putLock"> |
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| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>putLock</h4> |
| <pre>private final <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/ReentrantLock.html?is-external=true" title="class or interface in java.util.concurrent.locks">ReentrantLock</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.61">putLock</a></pre> |
| <div class="block">Lock held by put, offer, etc</div> |
| </li> |
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| </li> |
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| <a name="RegionNormalizerWorkQueue--"> |
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| <h4>RegionNormalizerWorkQueue</h4> |
| <pre><a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.63">RegionNormalizerWorkQueue</a>()</pre> |
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| <h4>signalNotEmpty</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.74">signalNotEmpty</a>()</pre> |
| <div class="block">Signals a waiting take. Called only from put/offer (which do not |
| otherwise ordinarily lock takeLock.)</div> |
| </li> |
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| <h4>fullyLock</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.87">fullyLock</a>()</pre> |
| <div class="block">Locks to prevent both puts and takes.</div> |
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| <h4>fullyUnlock</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.95">fullyUnlock</a>()</pre> |
| <div class="block">Unlocks to allow both puts and takes.</div> |
| </li> |
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| <a name="put-java.lang.Object-"> |
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| </a><a name="put-E-"> |
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| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.105">put</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html" title="type parameter in RegionNormalizerWorkQueue">E</a> e)</pre> |
| <div class="block">Inserts the specified element at the tail of the queue, if it's not already present.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>e</code> - the element to add</dd> |
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| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.127">putFirst</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html" title="type parameter in RegionNormalizerWorkQueue">E</a> e)</pre> |
| <div class="block">Inserts the specified element at the head of the queue.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>e</code> - the element to add</dd> |
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| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.140">putAll</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><? extends <a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html" title="type parameter in RegionNormalizerWorkQueue">E</a>> c)</pre> |
| <div class="block">Inserts the specified elements at the tail of the queue. Any elements already present in |
| the queue are ignored.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>c</code> - the elements to add</dd> |
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| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.162">putAllFirst</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><? extends <a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html" title="type parameter in RegionNormalizerWorkQueue">E</a>> c)</pre> |
| <div class="block">Inserts the specified elements at the head of the queue.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>c</code> - the elements to add</dd> |
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| <pre>public <a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html" title="type parameter in RegionNormalizerWorkQueue">E</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.189">take</a>() |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre> |
| <div class="block">Retrieves and removes the head of this queue, waiting if necessary |
| until an element becomes available.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the head of this queue</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code> - if interrupted while waiting</dd> |
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| <h4>clear</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.212">clear</a>()</pre> |
| <div class="block">Atomically removes all of the elements from this queue. |
| The queue will be empty after this call returns.</div> |
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| <h4>size</h4> |
| <pre>public int <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.226">size</a>()</pre> |
| <div class="block">Returns the number of elements in this queue.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the number of elements in this queue</dd> |
| </dl> |
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| <h4>toString</h4> |
| <pre>public <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> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerWorkQueue.html#line.236">toString</a>()</pre> |
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