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<div class="subTitle">org.apache.ignite.ml.trainers.group</div>
<h2 title="Class GroupTrainerBaseProcessorTask" class="title">Class GroupTrainerBaseProcessorTask&lt;K,V,C,T,R extends <a href="http://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>&gt;</h2>
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<li><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
<li>
<ul class="inheritance">
<li><a href="../../../../../../org/apache/ignite/compute/ComputeTaskAdapter.html" title="class in org.apache.ignite.compute">org.apache.ignite.compute.ComputeTaskAdapter</a>&lt;<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Void.html?is-external=true" title="class or interface in java.lang">Void</a>,R&gt;</li>
<li>
<ul class="inheritance">
<li>org.apache.ignite.ml.trainers.group.GroupTrainerBaseProcessorTask&lt;K,V,C,T,R&gt;</li>
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<div class="description">
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<dl>
<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>K</code> - Type of cache keys of cache used for training.</dd>
<dd><code>V</code> - Type of cache values of cache used for training.</dd>
<dd><code>C</code> - Type of context (common part of data needed for computation).</dd>
<dd><code>T</code> - Type of arguments of workers.</dd>
<dd><code>R</code> - Type of computation result.</dd>
</dl>
<dl>
<dt>All Implemented Interfaces:</dt>
<dd><a href="http://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="../../../../../../org/apache/ignite/compute/ComputeTask.html" title="interface in org.apache.ignite.compute">ComputeTask</a>&lt;<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Void.html?is-external=true" title="class or interface in java.lang">Void</a>,R&gt;</dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerEntriesProcessorTask.html" title="class in org.apache.ignite.ml.trainers.group">GroupTrainerEntriesProcessorTask</a>, <a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerKeysProcessorTask.html" title="class in org.apache.ignite.ml.trainers.group">GroupTrainerKeysProcessorTask</a></dd>
</dl>
<hr>
<br>
<pre>public abstract class <span class="typeNameLabel">GroupTrainerBaseProcessorTask&lt;K,V,C,T,R extends <a href="http://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>&gt;</span>
extends <a href="../../../../../../org/apache/ignite/compute/ComputeTaskAdapter.html" title="class in org.apache.ignite.compute">ComputeTaskAdapter</a>&lt;<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Void.html?is-external=true" title="class or interface in java.lang">Void</a>,R&gt;</pre>
<div class="block">Base task for group trainer.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../serialized-form.html#org.apache.ignite.ml.trainers.group.GroupTrainerBaseProcessorTask">Serialized Form</a></dd>
</dl>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>protected <a href="http://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/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html#cacheName">cacheName</a></span></code>
<div class="block">Name of cache on which training is done.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteSupplier.html" title="interface in org.apache.ignite.ml.math.functions">IgniteSupplier</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">C</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html#ctxSupplier">ctxSupplier</a></span></code>
<div class="block">Context supplier.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../../org/apache/ignite/Ignite.html" title="interface in org.apache.ignite">Ignite</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html#ignite">ignite</a></span></code>
<div class="block">Ignite instance.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteSupplier.html" title="interface in org.apache.ignite.ml.math.functions">IgniteSupplier</a>&lt;<a href="http://docs.oracle.com/javase/8/docs/api/java/util/stream/Stream.html?is-external=true" title="class or interface in java.util.stream">Stream</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerCacheKey.html" title="class in org.apache.ignite.ml.trainers.group">GroupTrainerCacheKey</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">K</a>&gt;&gt;&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html#keysSupplier">keysSupplier</a></span></code>
<div class="block">Supplier of keys on which worker should be executed.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteFunction.html" title="interface in org.apache.ignite.ml.math.functions">IgniteFunction</a>&lt;<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a>&gt;,<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html#reducer">reducer</a></span></code>
<div class="block">Reducer used for reducing of computations on specified keys.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="http://docs.oracle.com/javase/8/docs/api/java/util/UUID.html?is-external=true" title="class or interface in java.util">UUID</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html#trainingUUID">trainingUUID</a></span></code>
<div class="block">UUID of training.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteFunction.html" title="interface in org.apache.ignite.ml.math.functions">IgniteFunction</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">T</a>,<a href="../../../../../../org/apache/ignite/ml/trainers/group/ResultAndUpdates.html" title="class in org.apache.ignite.ml.trainers.group">ResultAndUpdates</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a>&gt;&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html#worker">worker</a></span></code>
<div class="block">Worker.</div>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</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/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html#GroupTrainerBaseProcessorTask-java.util.UUID-org.apache.ignite.ml.math.functions.IgniteSupplier-org.apache.ignite.ml.math.functions.IgniteFunction-org.apache.ignite.ml.math.functions.IgniteSupplier-org.apache.ignite.ml.math.functions.IgniteFunction-java.lang.String-org.apache.ignite.Ignite-">GroupTrainerBaseProcessorTask</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/util/UUID.html?is-external=true" title="class or interface in java.util">UUID</a>&nbsp;trainingUUID,
<a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteSupplier.html" title="interface in org.apache.ignite.ml.math.functions">IgniteSupplier</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">C</a>&gt;&nbsp;ctxSupplier,
<a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteFunction.html" title="interface in org.apache.ignite.ml.math.functions">IgniteFunction</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">T</a>,<a href="../../../../../../org/apache/ignite/ml/trainers/group/ResultAndUpdates.html" title="class in org.apache.ignite.ml.trainers.group">ResultAndUpdates</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a>&gt;&gt;&nbsp;worker,
<a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteSupplier.html" title="interface in org.apache.ignite.ml.math.functions">IgniteSupplier</a>&lt;<a href="http://docs.oracle.com/javase/8/docs/api/java/util/stream/Stream.html?is-external=true" title="class or interface in java.util.stream">Stream</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerCacheKey.html" title="class in org.apache.ignite.ml.trainers.group">GroupTrainerCacheKey</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">K</a>&gt;&gt;&gt;&nbsp;keysSupplier,
<a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteFunction.html" title="interface in org.apache.ignite.ml.math.functions">IgniteFunction</a>&lt;<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a>&gt;,<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a>&gt;&nbsp;reducer,
<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;cacheName,
<a href="../../../../../../org/apache/ignite/Ignite.html" title="interface in org.apache.ignite">Ignite</a>&nbsp;ignite)</code>
<div class="block">Construct an instance of this class with specified parameters.</div>
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<h3>Method Summary</h3>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</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>protected <a href="../../../../../../org/apache/ignite/cache/affinity/Affinity.html" title="interface in org.apache.ignite.cache.affinity">Affinity</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerCacheKey.html" title="class in org.apache.ignite.ml.trainers.group">GroupTrainerCacheKey</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html#affinity--">affinity</a></span>()</code>
<div class="block">Get affinity function of cache on which training is done.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>protected abstract <a href="../../../../../../org/apache/ignite/ml/trainers/group/BaseLocalProcessorJob.html" title="class in org.apache.ignite.ml.trainers.group">BaseLocalProcessorJob</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">K</a>,<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">V</a>,<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">T</a>,<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html#createJob--">createJob</a></span>()</code>
<div class="block">Create job for execution on subgrid.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;? extends <a href="../../../../../../org/apache/ignite/compute/ComputeJob.html" title="interface in org.apache.ignite.compute">ComputeJob</a>,<a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html#map-java.util.List-java.lang.Void-">map</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a>&gt;&nbsp;subgrid,
<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Void.html?is-external=true" title="class or interface in java.lang">Void</a>&nbsp;arg)</code>
<div class="block">This method is called to map or split grid task into multiple grid jobs.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html#reduce-java.util.List-">reduce</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../org/apache/ignite/compute/ComputeJobResult.html" title="interface in org.apache.ignite.compute">ComputeJobResult</a>&gt;&nbsp;results)</code>
<div class="block">Reduces (or aggregates) results received so far into one compound result to be returned to
caller via <a href="../../../../../../org/apache/ignite/compute/ComputeTaskFuture.html#get--"><code>ComputeTaskFuture.get()</code></a> method.</div>
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<h3>Methods inherited from class&nbsp;org.apache.ignite.compute.<a href="../../../../../../org/apache/ignite/compute/ComputeTaskAdapter.html" title="class in org.apache.ignite.compute">ComputeTaskAdapter</a></h3>
<code><a href="../../../../../../org/apache/ignite/compute/ComputeTaskAdapter.html#result-org.apache.ignite.compute.ComputeJobResult-java.util.List-">result</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://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="http://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="http://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="http://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="http://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="http://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="http://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="http://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="http://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="http://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="http://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="http://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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<a name="ctxSupplier">
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<h4>ctxSupplier</h4>
<pre>protected final&nbsp;<a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteSupplier.html" title="interface in org.apache.ignite.ml.math.functions">IgniteSupplier</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">C</a>&gt; ctxSupplier</pre>
<div class="block">Context supplier.</div>
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<a name="trainingUUID">
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<h4>trainingUUID</h4>
<pre>protected final&nbsp;<a href="http://docs.oracle.com/javase/8/docs/api/java/util/UUID.html?is-external=true" title="class or interface in java.util">UUID</a> trainingUUID</pre>
<div class="block">UUID of training.</div>
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<a name="worker">
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<h4>worker</h4>
<pre>protected&nbsp;<a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteFunction.html" title="interface in org.apache.ignite.ml.math.functions">IgniteFunction</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">T</a>,<a href="../../../../../../org/apache/ignite/ml/trainers/group/ResultAndUpdates.html" title="class in org.apache.ignite.ml.trainers.group">ResultAndUpdates</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a> extends <a href="http://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>&gt;&gt; worker</pre>
<div class="block">Worker.</div>
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<a name="reducer">
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<h4>reducer</h4>
<pre>protected final&nbsp;<a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteFunction.html" title="interface in org.apache.ignite.ml.math.functions">IgniteFunction</a>&lt;<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a> extends <a href="http://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>&gt;,<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a> extends <a href="http://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>&gt; reducer</pre>
<div class="block">Reducer used for reducing of computations on specified keys.</div>
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<h4>cacheName</h4>
<pre>protected final&nbsp;<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> cacheName</pre>
<div class="block">Name of cache on which training is done.</div>
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<a name="keysSupplier">
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<h4>keysSupplier</h4>
<pre>protected final&nbsp;<a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteSupplier.html" title="interface in org.apache.ignite.ml.math.functions">IgniteSupplier</a>&lt;<a href="http://docs.oracle.com/javase/8/docs/api/java/util/stream/Stream.html?is-external=true" title="class or interface in java.util.stream">Stream</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerCacheKey.html" title="class in org.apache.ignite.ml.trainers.group">GroupTrainerCacheKey</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">K</a>&gt;&gt;&gt; keysSupplier</pre>
<div class="block">Supplier of keys on which worker should be executed.</div>
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<h4>ignite</h4>
<pre>protected final&nbsp;<a href="../../../../../../org/apache/ignite/Ignite.html" title="interface in org.apache.ignite">Ignite</a> ignite</pre>
<div class="block">Ignite instance.</div>
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<a name="GroupTrainerBaseProcessorTask-java.util.UUID-org.apache.ignite.ml.math.functions.IgniteSupplier-org.apache.ignite.ml.math.functions.IgniteFunction-org.apache.ignite.ml.math.functions.IgniteSupplier-org.apache.ignite.ml.math.functions.IgniteFunction-java.lang.String-org.apache.ignite.Ignite-">
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<h4>GroupTrainerBaseProcessorTask</h4>
<pre>public&nbsp;GroupTrainerBaseProcessorTask(<a href="http://docs.oracle.com/javase/8/docs/api/java/util/UUID.html?is-external=true" title="class or interface in java.util">UUID</a>&nbsp;trainingUUID,
<a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteSupplier.html" title="interface in org.apache.ignite.ml.math.functions">IgniteSupplier</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">C</a>&gt;&nbsp;ctxSupplier,
<a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteFunction.html" title="interface in org.apache.ignite.ml.math.functions">IgniteFunction</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">T</a>,<a href="../../../../../../org/apache/ignite/ml/trainers/group/ResultAndUpdates.html" title="class in org.apache.ignite.ml.trainers.group">ResultAndUpdates</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a>&gt;&gt;&nbsp;worker,
<a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteSupplier.html" title="interface in org.apache.ignite.ml.math.functions">IgniteSupplier</a>&lt;<a href="http://docs.oracle.com/javase/8/docs/api/java/util/stream/Stream.html?is-external=true" title="class or interface in java.util.stream">Stream</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerCacheKey.html" title="class in org.apache.ignite.ml.trainers.group">GroupTrainerCacheKey</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">K</a>&gt;&gt;&gt;&nbsp;keysSupplier,
<a href="../../../../../../org/apache/ignite/ml/math/functions/IgniteFunction.html" title="interface in org.apache.ignite.ml.math.functions">IgniteFunction</a>&lt;<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a>&gt;,<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a>&gt;&nbsp;reducer,
<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;cacheName,
<a href="../../../../../../org/apache/ignite/Ignite.html" title="interface in org.apache.ignite">Ignite</a>&nbsp;ignite)</pre>
<div class="block">Construct an instance of this class with specified parameters.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>trainingUUID</code> - UUID of training.</dd>
<dd><code>ctxSupplier</code> - Supplier of context.</dd>
<dd><code>worker</code> - Function calculated on each of specified keys.</dd>
<dd><code>keysSupplier</code> - Supplier of keys on which training is done.</dd>
<dd><code>reducer</code> - Reducer used for reducing results of computation performed on each of specified keys.</dd>
<dd><code>cacheName</code> - Name of cache on which training is done.</dd>
<dd><code>ignite</code> - Ignite instance.</dd>
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<pre>@Nullable
public&nbsp;<a href="http://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;? extends <a href="../../../../../../org/apache/ignite/compute/ComputeJob.html" title="interface in org.apache.ignite.compute">ComputeJob</a>,<a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a>&gt;&nbsp;map(<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a>&gt;&nbsp;subgrid,
@Nullable
<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Void.html?is-external=true" title="class or interface in java.lang">Void</a>&nbsp;arg)
throws <a href="../../../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre>
<div class="block">This method is called to map or split grid task into multiple grid jobs. This is the
first method that gets called when task execution starts.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>subgrid</code> - Nodes available for this task execution. Note that order of nodes is
guaranteed to be randomized by container. This ensures that every time
you simply iterate through grid nodes, the order of nodes will be random which
over time should result into all nodes being used equally.</dd>
<dd><code>arg</code> - Task execution argument. Can be <code>null</code>. This is the same argument
as the one passed into <code>Grid#execute(...)</code> methods.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Map of grid jobs assigned to subgrid node. Unless <a href="../../../../../../org/apache/ignite/compute/ComputeTaskContinuousMapper.html" title="interface in org.apache.ignite.compute"><code>ComputeTaskContinuousMapper</code></a> is
injected into task, if <code>null</code> or empty map is returned, exception will be thrown.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If mapping could not complete successfully. This exception will be
thrown out of <a href="../../../../../../org/apache/ignite/compute/ComputeTaskFuture.html#get--"><code>ComputeTaskFuture.get()</code></a> method.</dd>
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<h4>reduce</h4>
<pre>@Nullable
public&nbsp;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a>&nbsp;reduce(<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../org/apache/ignite/compute/ComputeJobResult.html" title="interface in org.apache.ignite.compute">ComputeJobResult</a>&gt;&nbsp;results)
throws <a href="../../../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre>
<div class="block">Reduces (or aggregates) results received so far into one compound result to be returned to
caller via <a href="../../../../../../org/apache/ignite/compute/ComputeTaskFuture.html#get--"><code>ComputeTaskFuture.get()</code></a> method.
<p>
Note, that if some jobs did not succeed and could not be failed over then the list of
results passed into this method will include the failed results. Otherwise, failed
results will not be in the list.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>results</code> - Received results of broadcasted remote executions. Note that if task class has
<a href="../../../../../../org/apache/ignite/compute/ComputeTaskNoResultCache.html" title="annotation in org.apache.ignite.compute"><code>ComputeTaskNoResultCache</code></a> annotation, then this list will be empty.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Grid job result constructed from results of remote executions.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If reduction or results caused an error. This exception will
be thrown out of <a href="../../../../../../org/apache/ignite/compute/ComputeTaskFuture.html#get--"><code>ComputeTaskFuture.get()</code></a> method.</dd>
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<h4>createJob</h4>
<pre>protected abstract&nbsp;<a href="../../../../../../org/apache/ignite/ml/trainers/group/BaseLocalProcessorJob.html" title="class in org.apache.ignite.ml.trainers.group">BaseLocalProcessorJob</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">K</a>,<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">V</a>,<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">T</a>,<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerBaseProcessorTask.html" title="type parameter in GroupTrainerBaseProcessorTask">R</a>&gt;&nbsp;createJob()</pre>
<div class="block">Create job for execution on subgrid.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Job for execution on subgrid.</dd>
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<h4>affinity</h4>
<pre>protected&nbsp;<a href="../../../../../../org/apache/ignite/cache/affinity/Affinity.html" title="interface in org.apache.ignite.cache.affinity">Affinity</a>&lt;<a href="../../../../../../org/apache/ignite/ml/trainers/group/GroupTrainerCacheKey.html" title="class in org.apache.ignite.ml.trainers.group">GroupTrainerCacheKey</a>&gt;&nbsp;affinity()</pre>
<div class="block">Get affinity function of cache on which training is done.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Affinity function of cache on which training is done.</dd>
</dl>
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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://ignite.apache.org"><nobr>2018 Copyright &#169; 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> </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>:&nbsp;&nbsp; ver. <strong>2.4.0</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>:&nbsp;&nbsp; March 5 2018 </td> </tr> </tbody> </table> </td> </tr> </table></small></p>
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