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| <div class="subTitle">org.apache.ignite</div>
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| <h2 title="Interface IgniteCountDownLatch" class="title">Interface IgniteCountDownLatch</h2>
|
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| <dt>All Superinterfaces:</dt>
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| <dd><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></dd>
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| <br>
|
| <pre>public interface <span class="strong">IgniteCountDownLatch</span>
|
| extends <a href="http://docs.oracle.com/javase/7/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></pre>
|
| <div class="block">This interface provides a rich API for working with distributed count down latch. |
| <p> |
| <h1 class="header">Functionality</h1> |
| Distributed count down latch provides functionality similar to <code>java.util.CountDownLatch</code>. |
| Note that you cannot remove count down latch having count greater that zero. It should be |
| counted down to zero first. |
| <h1 class="header">Creating Distributed Count Down Latch</h1> |
| Instance of cache count down latch can be created by calling the following method: |
| <a href="../../../org/apache/ignite/Ignite.html#countDownLatch(java.lang.String,%20int,%20boolean,%20boolean)"><code>Ignite.countDownLatch(String, int, boolean, boolean)</code></a>.</div>
|
| </li>
|
| </ul>
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| <!-- ========== METHOD SUMMARY =========== -->
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| <h3>Method Summary</h3>
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| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
|
| <caption><span>Methods</span><span class="tabEnd"> </span></caption>
|
| <tr>
|
| <th class="colFirst" scope="col">Modifier and Type</th>
|
| <th class="colLast" scope="col">Method and Description</th>
|
| </tr>
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| <tr class="altColor">
|
| <td class="colFirst"><code>boolean</code></td>
|
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteCountDownLatch.html#autoDelete()">autoDelete</a></strong>()</code>
|
| <div class="block">Gets <code>autoDelete</code> flag.</div>
|
| </td>
|
| </tr>
|
| <tr class="rowColor">
|
| <td class="colFirst"><code>void</code></td>
|
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteCountDownLatch.html#await()">await</a></strong>()</code>
|
| <div class="block">Causes the current thread to wait until the latch has counted down to |
| zero, unless current thread is interrupted.</div>
|
| </td>
|
| </tr>
|
| <tr class="altColor">
|
| <td class="colFirst"><code>boolean</code></td>
|
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteCountDownLatch.html#await(long)">await</a></strong>(long timeout)</code>
|
| <div class="block">Causes the current thread to wait until the latch has counted down to |
| zero, unless the thread is interrupted, or the specified waiting time elapses.</div>
|
| </td>
|
| </tr>
|
| <tr class="rowColor">
|
| <td class="colFirst"><code>boolean</code></td>
|
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteCountDownLatch.html#await(long,%20java.util.concurrent.TimeUnit)">await</a></strong>(long timeout,
|
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/TimeUnit.html?is-external=true" title="class or interface in java.util.concurrent">TimeUnit</a> unit)</code>
|
| <div class="block">Causes the current thread to wait until the latch has counted down to |
| zero, unless the thread is interrupted, or the specified waiting time elapses.</div>
|
| </td>
|
| </tr>
|
| <tr class="altColor">
|
| <td class="colFirst"><code>void</code></td>
|
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteCountDownLatch.html#close()">close</a></strong>()</code>
|
| <div class="block">Removes this count down latch.</div>
|
| </td>
|
| </tr>
|
| <tr class="rowColor">
|
| <td class="colFirst"><code>int</code></td>
|
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteCountDownLatch.html#count()">count</a></strong>()</code>
|
| <div class="block">Gets current count value of the latch.</div>
|
| </td>
|
| </tr>
|
| <tr class="altColor">
|
| <td class="colFirst"><code>int</code></td>
|
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteCountDownLatch.html#countDown()">countDown</a></strong>()</code>
|
| <div class="block">Decrements the count of the latch, releasing all waiting threads |
| on all nodes if the count reaches zero.</div>
|
| </td>
|
| </tr>
|
| <tr class="rowColor">
|
| <td class="colFirst"><code>int</code></td>
|
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteCountDownLatch.html#countDown(int)">countDown</a></strong>(int val)</code>
|
| <div class="block">Decreases the count of the latch using passed in value, |
| releasing all waiting threads on all nodes if the count reaches zero.</div>
|
| </td>
|
| </tr>
|
| <tr class="altColor">
|
| <td class="colFirst"><code>void</code></td>
|
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteCountDownLatch.html#countDownAll()">countDownAll</a></strong>()</code>
|
| <div class="block">Counts down this latch to zero, releasing all waiting threads on all nodes.</div>
|
| </td>
|
| </tr>
|
| <tr class="rowColor">
|
| <td class="colFirst"><code>int</code></td>
|
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteCountDownLatch.html#initialCount()">initialCount</a></strong>()</code>
|
| <div class="block">Gets initial count value of the latch.</div>
|
| </td>
|
| </tr>
|
| <tr class="altColor">
|
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
|
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteCountDownLatch.html#name()">name</a></strong>()</code>
|
| <div class="block">Gets name of the latch.</div>
|
| </td>
|
| </tr>
|
| <tr class="rowColor">
|
| <td class="colFirst"><code>boolean</code></td>
|
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteCountDownLatch.html#removed()">removed</a></strong>()</code>
|
| <div class="block">Gets <code>removed</code> status of the latch.</div>
|
| </td>
|
| </tr>
|
| </table>
|
| </li>
|
| </ul>
|
| </li>
|
| </ul>
|
| </div>
|
| <div class="details">
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| <ul class="blockList">
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| <li class="blockList">
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| <!-- ============ METHOD DETAIL ========== -->
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| <ul class="blockList">
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| </a>
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| <h3>Method Detail</h3>
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| <a name="name()">
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| <h4>name</h4>
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| <pre><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> name()</pre>
|
| <div class="block">Gets name of the latch.</div>
|
| <dl><dt><span class="strong">Returns:</span></dt><dd>Name of the latch.</dd></dl>
|
| </li>
|
| </ul>
|
| <a name="count()">
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| </a>
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| <ul class="blockList">
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| <li class="blockList">
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| <h4>count</h4>
|
| <pre>int count()</pre>
|
| <div class="block">Gets current count value of the latch.</div>
|
| <dl><dt><span class="strong">Returns:</span></dt><dd>Current count.</dd></dl>
|
| </li>
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| </ul>
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| <h4>initialCount</h4>
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| <pre>int initialCount()</pre>
|
| <div class="block">Gets initial count value of the latch.</div>
|
| <dl><dt><span class="strong">Returns:</span></dt><dd>Initial count.</dd></dl>
|
| </li>
|
| </ul>
|
| <a name="autoDelete()">
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| </a>
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| <ul class="blockList">
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| <li class="blockList">
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| <h4>autoDelete</h4>
|
| <pre>boolean autoDelete()</pre>
|
| <div class="block">Gets <code>autoDelete</code> flag. If this flag is <code>true</code> latch is removed |
| from cache when it has been counted down to 0.</div>
|
| <dl><dt><span class="strong">Returns:</span></dt><dd>Value of <code>autoDelete</code> flag.</dd></dl>
|
| </li>
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| </ul>
|
| <a name="await()">
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| </a>
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| <li class="blockList">
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| <h4>await</h4>
|
| <pre>void await()
|
| throws <a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre>
|
| <div class="block">Causes the current thread to wait until the latch has counted down to |
| zero, unless current thread is interrupted. |
| <p> |
| If the current count of the latch is zero then this method returns immediately. |
| <p> |
| If the current count is greater than zero then the current |
| thread becomes disabled for thread scheduling purposes and lies |
| dormant until one of two things happen: |
| <ul> |
| <li>The count reaches zero due to invocations of the |
| <a href="../../../org/apache/ignite/IgniteCountDownLatch.html#countDown()"><code>countDown()</code></a> method on any node; or |
| <li>Some other thread interrupts the current thread. |
| </ul> |
| <p> |
| If the current thread: |
| <ul> |
| <li>has its interrupted status set on entry to this method; or |
| <li>is interrupted while waiting, |
| </ul> |
| then <code>IgniteInterruptedCheckedException</code> is thrown and the current thread's |
| interrupted status is cleared.</div>
|
| <dl><dt><span class="strong">Throws:</span></dt>
|
| <dd><code><a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If operation failed.</dd>
|
| <dd><code><a href="../../../org/apache/ignite/IgniteInterruptedException.html" title="class in org.apache.ignite">IgniteInterruptedException</a></code> - if the current thread is interrupted |
| while waiting</dd></dl>
|
| </li>
|
| </ul>
|
| <a name="await(long)">
|
| <!-- -->
|
| </a>
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| <ul class="blockList">
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| <li class="blockList">
|
| <h4>await</h4>
|
| <pre>boolean await(long timeout)
|
| throws <a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre>
|
| <div class="block">Causes the current thread to wait until the latch has counted down to |
| zero, unless the thread is interrupted, or the specified waiting time elapses. |
| <p> |
| If the current count is zero then this method returns immediately |
| with the value <code>true</code>. |
| <p> |
| If the current count is greater than zero then the current |
| thread becomes disabled for thread scheduling purposes and lies |
| dormant until one of three things happen: |
| <ul> |
| <li>The count reaches zero due to invocations of the |
| <a href="../../../org/apache/ignite/IgniteCountDownLatch.html#countDown()"><code>countDown()</code></a> method on any node; or |
| <li>Some other thread interrupts the current thread; or |
| <li>The specified waiting time elapses. |
| </ul> |
| <p> |
| If the count reaches zero then the method returns with the |
| value <code>true</code>. |
| <p> |
| If the current thread: |
| <ul> |
| <li>has its interrupted status set on entry to this method; or |
| <li>is interrupted while waiting, |
| </ul> |
| then <code>IgniteInterruptedCheckedException</code> is thrown and the current thread's |
| interrupted status is cleared. |
| <p> |
| If the specified waiting time elapses then the value <code>false</code> |
| is returned. If the time is less than or equal to zero, the method |
| will not wait at all.</div>
|
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>timeout</code> - The maximum time to wait in milliseconds.</dd>
|
| <dt><span class="strong">Returns:</span></dt><dd><code>True</code> if the count reached zero and <code>false</code> |
| if the waiting time elapsed before the count reached zero.</dd>
|
| <dt><span class="strong">Throws:</span></dt>
|
| <dd><code><a href="../../../org/apache/ignite/IgniteInterruptedException.html" title="class in org.apache.ignite">IgniteInterruptedException</a></code> - If the current thread is interrupted |
| while waiting.</dd>
|
| <dd><code><a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If operation failed.</dd></dl>
|
| </li>
|
| </ul>
|
| <a name="await(long, java.util.concurrent.TimeUnit)">
|
| <!-- -->
|
| </a>
|
| <ul class="blockList">
|
| <li class="blockList">
|
| <h4>await</h4>
|
| <pre>boolean await(long timeout,
|
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/TimeUnit.html?is-external=true" title="class or interface in java.util.concurrent">TimeUnit</a> unit)
|
| throws <a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre>
|
| <div class="block">Causes the current thread to wait until the latch has counted down to |
| zero, unless the thread is interrupted, or the specified waiting time elapses. |
| <p> |
| If the current count is zero then this method returns immediately |
| with the value <code>true</code>. |
| <p> |
| If the current count is greater than zero then the current |
| thread becomes disabled for thread scheduling purposes and lies |
| dormant until one of three things happen: |
| <ul> |
| <li>The count reaches zero due to invocations of the |
| <a href="../../../org/apache/ignite/IgniteCountDownLatch.html#countDown()"><code>countDown()</code></a> method on any node; or |
| <li>Some other thread interrupts the current thread; or |
| <li>The specified waiting time elapses. |
| </ul> |
| <p> |
| If the count reaches zero then the method returns with the |
| value <code>true</code>. |
| <p> |
| If the current thread: |
| <ul> |
| <li>has its interrupted status set on entry to this method; or |
| <li>is interrupted while waiting, |
| </ul> |
| then <code>IgniteInterruptedCheckedException</code> is thrown and the current thread's |
| interrupted status is cleared. |
| <p> |
| If the specified waiting time elapses then the value <code>false</code> |
| is returned. If the time is less than or equal to zero, the method |
| will not wait at all.</div>
|
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>timeout</code> - The maximum time to wait.</dd><dd><code>unit</code> - The time unit of the <code>timeout</code> argument.</dd>
|
| <dt><span class="strong">Returns:</span></dt><dd><code>True</code> if the count reached zero and <code>false</code> |
| if the waiting time elapsed before the count reached zero.</dd>
|
| <dt><span class="strong">Throws:</span></dt>
|
| <dd><code><a href="../../../org/apache/ignite/IgniteInterruptedException.html" title="class in org.apache.ignite">IgniteInterruptedException</a></code> - If the current thread is interrupted |
| while waiting.</dd>
|
| <dd><code><a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If operation failed.</dd></dl>
|
| </li>
|
| </ul>
|
| <a name="countDown()">
|
| <!-- -->
|
| </a>
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| <ul class="blockList">
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| <li class="blockList">
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| <h4>countDown</h4>
|
| <pre>int countDown()
|
| throws <a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre>
|
| <div class="block">Decrements the count of the latch, releasing all waiting threads |
| on all nodes if the count reaches zero. |
| <p> |
| If the current count is greater than zero then it is decremented. |
| If the new count is zero then all waiting threads are re-enabled for |
| thread scheduling purposes. |
| <p> |
| If the current count equals zero then nothing happens.</div>
|
| <dl><dt><span class="strong">Returns:</span></dt><dd>Count after decrement.</dd>
|
| <dt><span class="strong">Throws:</span></dt>
|
| <dd><code><a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If operation failed.</dd></dl>
|
| </li>
|
| </ul>
|
| <a name="countDown(int)">
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| <h4>countDown</h4>
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| <pre>int countDown(int val)
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| throws <a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre>
|
| <div class="block">Decreases the count of the latch using passed in value, |
| releasing all waiting threads on all nodes if the count reaches zero. |
| <p> |
| If the current count is greater than zero then it is decreased. |
| If the new count is zero then all waiting threads are re-enabled for |
| thread scheduling purposes. |
| <p> |
| If the current count equals zero then nothing happens.</div>
|
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>val</code> - Value to decrease counter on.</dd>
|
| <dt><span class="strong">Returns:</span></dt><dd>Count after decreasing.</dd>
|
| <dt><span class="strong">Throws:</span></dt>
|
| <dd><code><a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If operation failed.</dd></dl>
|
| </li>
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| </ul>
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| <h4>countDownAll</h4>
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| <pre>void countDownAll()
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| throws <a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre>
|
| <div class="block">Counts down this latch to zero, releasing all waiting threads on all nodes. |
| <p> |
| If the current count equals zero then nothing happens.</div>
|
| <dl><dt><span class="strong">Throws:</span></dt>
|
| <dd><code><a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If operation failed.</dd></dl>
|
| </li>
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| </ul>
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| <h4>removed</h4>
|
| <pre>boolean removed()</pre>
|
| <div class="block">Gets <code>removed</code> status of the latch.</div>
|
| <dl><dt><span class="strong">Returns:</span></dt><dd><code>True</code> if latch was removed from cache, <code>false</code> otherwise.</dd></dl>
|
| </li>
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| </ul>
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| <ul class="blockListLast">
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| <li class="blockList">
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| <h4>close</h4>
|
| <pre>void close()</pre>
|
| <div class="block">Removes this count down latch.</div>
|
| <dl>
|
| <dt><strong>Specified by:</strong></dt>
|
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/AutoCloseable.html?is-external=true#close()" title="class or interface in java.lang">close</a></code> in interface <code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></code></dd>
|
| <dt><strong>Specified by:</strong></dt>
|
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Closeable.html?is-external=true#close()" title="class or interface in java.io">close</a></code> in interface <code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></code></dd>
|
| <dt><span class="strong">Throws:</span></dt>
|
| <dd><code><a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If operation failed.</dd></dl>
|
| </li>
|
| </ul>
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| <p class="legalCopy"><small><table width="100%" border="0" cellspacing=0 cellpadding=0 style="padding: 5px"> <tr> <td> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <a target=_blank href="https://apache.org/projects/ignite.html"><nobr>2015 Copyright © Apache Software Foundation</nobr></a> </td> </tr> </tbody> </table> </td> <td width="100%" align="right" valign="center"> <a href="https://twitter.com/ApacheIgnite" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @ApacheIgnite</a> <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script> </td> </tr> <tr> <td colspan="2" valign="top" align="left"> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <b>Ignite Fabric</b> </td> <td>: ver. <strong>1.5.0-final-SNAPSHOT</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: Äåêàáðü 21 2015 </td> </tr> </tbody> </table> </td> </tr> </table></small></p>
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