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apache / hadoop-site / 952d547359cafef280f0a0324055741b2ed55be1 / . / content / docs / r3.3.1 / hadoop-yarn / hadoop-yarn-api / apidocs / org / apache / hadoop / yarn / api / records / ReservationId.html
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<div class="subTitle">org.apache.hadoop.yarn.api.records</div>
<h2 title="Class ReservationId" class="title">Class ReservationId</h2>
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<li>org.apache.hadoop.yarn.api.records.ReservationId</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a>&lt;<a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records">ReservationId</a>&gt;</dd>
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<br>
<pre>@InterfaceAudience.Public
@InterfaceStability.Unstable
public abstract class <span class="typeNameLabel">ReservationId</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="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a>&lt;<a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records">ReservationId</a>&gt;</pre>
<div class="block"><p>
<a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records"><code>ReservationId</code></a> represents the <em>globally unique</em> identifier for
a reservation.
</p>
<p>
The globally unique nature of the identifier is achieved by using the
<em>cluster timestamp</em> i.e. start-time of the <code>ResourceManager</code>
along with a monotonically increasing counter for the reservation.
</p></div>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<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>protected long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html#clusterTimestamp">clusterTimestamp</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html#id">id</a></span></code>&nbsp;</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/yarn/api/records/ReservationId.html#reserveIdStrPrefix">reserveIdStrPrefix</a></span></code>&nbsp;</td>
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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/yarn/api/records/ReservationId.html#ReservationId--">ReservationId</a></span>()</code>&nbsp;</td>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>protected abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html#build--">build</a></span>()</code>&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html#compareTo-org.apache.hadoop.yarn.api.records.ReservationId-">compareTo</a></span>(<a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records">ReservationId</a>&nbsp;other)</code>&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html#equals-java.lang.Object-">equals</a></span>(<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>&nbsp;obj)</code>&nbsp;</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>abstract long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html#getClusterTimestamp--">getClusterTimestamp</a></span>()</code>
<div class="block">Get the <em>start time</em> of the <code>ResourceManager</code> which is used to
generate globally unique <a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records"><code>ReservationId</code></a>.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>abstract long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html#getId--">getId</a></span>()</code>
<div class="block">Get the long identifier of the <a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records"><code>ReservationId</code></a> which is unique for
all Reservations started by a particular instance of the
<code>ResourceManager</code>.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html#hashCode--">hashCode</a></span>()</code>&nbsp;</td>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>static <a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records">ReservationId</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html#newInstance-long-long-">newInstance</a></span>(long&nbsp;clusterTimestamp,
long&nbsp;id)</code>&nbsp;</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records">ReservationId</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html#parseReservationId-java.lang.String-">parseReservationId</a></span>(<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>&nbsp;reservationId)</code>
<div class="block">Parse the string argument as a <a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records"><code>ReservationId</code></a></div>
</td>
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<tr id="i8" class="altColor">
<td class="colFirst"><code>protected abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html#setClusterTimestamp-long-">setClusterTimestamp</a></span>(long&nbsp;clusterTimestamp)</code>&nbsp;</td>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code>protected abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html#setId-long-">setId</a></span>(long&nbsp;id)</code>&nbsp;</td>
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<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/yarn/api/records/ReservationId.html#toString--">toString</a></span>()</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;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#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#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>
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<pre>@InterfaceAudience.Private
@InterfaceStability.Unstable
public static final&nbsp;<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> reserveIdStrPrefix</pre>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../constant-values.html#org.apache.hadoop.yarn.api.records.ReservationId.reserveIdStrPrefix">Constant Field Values</a></dd>
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<h4>clusterTimestamp</h4>
<pre>protected&nbsp;long clusterTimestamp</pre>
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<h4>id</h4>
<pre>protected&nbsp;long id</pre>
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<h3>Constructor Detail</h3>
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<h4>ReservationId</h4>
<pre>public&nbsp;ReservationId()</pre>
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<h4>newInstance</h4>
<pre>@InterfaceAudience.Private
@InterfaceStability.Unstable
public static&nbsp;<a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records">ReservationId</a>&nbsp;newInstance(long&nbsp;clusterTimestamp,
long&nbsp;id)</pre>
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<h4>getId</h4>
<pre>@InterfaceAudience.Public
@InterfaceStability.Unstable
public abstract&nbsp;long&nbsp;getId()</pre>
<div class="block">Get the long identifier of the <a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records"><code>ReservationId</code></a> which is unique for
all Reservations started by a particular instance of the
<code>ResourceManager</code>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>long identifier of the <a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records"><code>ReservationId</code></a></dd>
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<h4>setId</h4>
<pre>@InterfaceAudience.Private
@InterfaceStability.Unstable
protected abstract&nbsp;void&nbsp;setId(long&nbsp;id)</pre>
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<h4>getClusterTimestamp</h4>
<pre>@InterfaceAudience.Public
@InterfaceStability.Unstable
public abstract&nbsp;long&nbsp;getClusterTimestamp()</pre>
<div class="block">Get the <em>start time</em> of the <code>ResourceManager</code> which is used to
generate globally unique <a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records"><code>ReservationId</code></a>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><em>start time</em> of the <code>ResourceManager</code></dd>
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<pre>@InterfaceAudience.Private
@InterfaceStability.Unstable
protected abstract&nbsp;void&nbsp;setClusterTimestamp(long&nbsp;clusterTimestamp)</pre>
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<pre>protected abstract&nbsp;void&nbsp;build()</pre>
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<pre>public&nbsp;int&nbsp;compareTo(<a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records">ReservationId</a>&nbsp;other)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true#compareTo-T-" title="class or interface in java.lang">compareTo</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a>&lt;<a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records">ReservationId</a>&gt;</code></dd>
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<a name="toString--">
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<h4>toString</h4>
<pre>public&nbsp;<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>&nbsp;toString()</pre>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><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></code>&nbsp;in class&nbsp;<code><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></code></dd>
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<h4>parseReservationId</h4>
<pre>@InterfaceAudience.Public
@InterfaceStability.Unstable
public static&nbsp;<a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records">ReservationId</a>&nbsp;parseReservationId(<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>&nbsp;reservationId)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Parse the string argument as a <a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records"><code>ReservationId</code></a></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>reservationId</code> - the string representation of the <a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records"><code>ReservationId</code></a></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the <a href="../../../../../../org/apache/hadoop/yarn/api/records/ReservationId.html" title="class in org.apache.hadoop.yarn.api.records"><code>ReservationId</code></a> corresponding to the input string if
valid, null if input is null</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if unable to parse the input string</dd>
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<h4>hashCode</h4>
<pre>public&nbsp;int&nbsp;hashCode()</pre>
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<dd><code><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></code>&nbsp;in class&nbsp;<code><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></code></dd>
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<pre>public&nbsp;boolean&nbsp;equals(<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>&nbsp;obj)</pre>
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