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<div class="subTitle">org.apache.drill.exec.physical.base</div>
<h2 title="Interface Exchange" class="title">Interface Exchange</h2>
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<dt>All Superinterfaces:</dt>
<dd><a href="../../../../../../org/apache/drill/common/graph/GraphValue.html" title="interface in org.apache.drill.common.graph">GraphValue</a>&lt;<a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html" title="interface in org.apache.drill.exec.physical.base">PhysicalOperator</a>&gt;, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;<a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html" title="interface in org.apache.drill.exec.physical.base">PhysicalOperator</a>&gt;, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html" title="interface in org.apache.drill.exec.physical.base">PhysicalOperator</a></dd>
</dl>
<dl>
<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../../../../org/apache/drill/exec/physical/config/AbstractDeMuxExchange.html" title="class in org.apache.drill.exec.physical.config">AbstractDeMuxExchange</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/AbstractExchange.html" title="class in org.apache.drill.exec.physical.base">AbstractExchange</a>, <a href="../../../../../../org/apache/drill/exec/physical/config/AbstractMuxExchange.html" title="class in org.apache.drill.exec.physical.config">AbstractMuxExchange</a>, <a href="../../../../../../org/apache/drill/exec/physical/config/BroadcastExchange.html" title="class in org.apache.drill.exec.physical.config">BroadcastExchange</a>, <a href="../../../../../../org/apache/drill/exec/physical/config/HashToMergeExchange.html" title="class in org.apache.drill.exec.physical.config">HashToMergeExchange</a>, <a href="../../../../../../org/apache/drill/exec/physical/config/HashToRandomExchange.html" title="class in org.apache.drill.exec.physical.config">HashToRandomExchange</a>, <a href="../../../../../../org/apache/drill/exec/physical/config/OrderedMuxExchange.html" title="class in org.apache.drill.exec.physical.config">OrderedMuxExchange</a>, <a href="../../../../../../org/apache/drill/exec/physical/config/OrderedPartitionExchange.html" title="class in org.apache.drill.exec.physical.config">OrderedPartitionExchange</a>, <a href="../../../../../../org/apache/drill/exec/physical/config/RangePartitionExchange.html" title="class in org.apache.drill.exec.physical.config">RangePartitionExchange</a>, <a href="../../../../../../org/apache/drill/exec/physical/config/SingleMergeExchange.html" title="class in org.apache.drill.exec.physical.config">SingleMergeExchange</a>, <a href="../../../../../../org/apache/drill/exec/physical/config/UnionExchange.html" title="class in org.apache.drill.exec.physical.config">UnionExchange</a>, <a href="../../../../../../org/apache/drill/exec/physical/config/UnorderedDeMuxExchange.html" title="class in org.apache.drill.exec.physical.config">UnorderedDeMuxExchange</a>, <a href="../../../../../../org/apache/drill/exec/physical/config/UnorderedMuxExchange.html" title="class in org.apache.drill.exec.physical.config">UnorderedMuxExchange</a></dd>
</dl>
<hr>
<br>
<pre>public interface <span class="typeNameLabel">Exchange</span>
extends <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html" title="interface in org.apache.drill.exec.physical.base">PhysicalOperator</a></pre>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/physical/base/Exchange.ParallelizationDependency.html" title="enum in org.apache.drill.exec.physical.base">Exchange.ParallelizationDependency</a></span></code>
<div class="block">Exchanges are fragment boundaries in physical operator tree.</div>
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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></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html" title="interface in org.apache.drill.exec.physical.base">PhysicalOperator</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/physical/base/Exchange.html#getChild--">getChild</a></span>()</code>
<div class="block">Return the feeding child of this operator node.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/drill/exec/physical/base/Exchange.ParallelizationDependency.html" title="enum in org.apache.drill.exec.physical.base">Exchange.ParallelizationDependency</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/physical/base/Exchange.html#getParallelizationDependency--">getParallelizationDependency</a></span>()</code>
<div class="block">Get the parallelization dependency of the Exchange.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/drill/exec/physical/base/Receiver.html" title="interface in org.apache.drill.exec.physical.base">Receiver</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/physical/base/Exchange.html#getReceiver-int-">getReceiver</a></span>(int&nbsp;minorFragmentId)</code>
<div class="block">Get the Receiver associated with the given minorFragmentId.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/physical/base/Exchange.html#getReceiverMemory-int-int-">getReceiverMemory</a></span>(int&nbsp;receiverCount,
int&nbsp;senderCount)</code>
<div class="block">Returns the memory requirement for the receiver side of the exchange operator.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/drill/exec/planner/fragment/ParallelizationInfo.html" title="class in org.apache.drill.exec.planner.fragment">ParallelizationInfo</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/physical/base/Exchange.html#getReceiverParallelizationInfo-java.util.List-">getReceiverParallelizationInfo</a></span>(<a href="https://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/drill/exec/proto/CoordinationProtos.DrillbitEndpoint.html" title="class in org.apache.drill.exec.proto">CoordinationProtos.DrillbitEndpoint</a>&gt;&nbsp;senderFragmentEndpoints)</code>
<div class="block">Provide parallelization parameters for receiver side of the exchange.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/drill/exec/physical/base/Sender.html" title="interface in org.apache.drill.exec.physical.base">Sender</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/physical/base/Exchange.html#getSender-int-org.apache.drill.exec.physical.base.PhysicalOperator-">getSender</a></span>(int&nbsp;minorFragmentId,
<a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html" title="interface in org.apache.drill.exec.physical.base">PhysicalOperator</a>&nbsp;child)</code>
<div class="block">Get the Sender associated with the given minorFragmentId.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/physical/base/Exchange.html#getSenderMemory-int-int-">getSenderMemory</a></span>(int&nbsp;receiverCount,
int&nbsp;senderCount)</code>
<div class="block">Returns the memory requirement for the sender side of the exchange operator.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/drill/exec/planner/fragment/ParallelizationInfo.html" title="class in org.apache.drill.exec.planner.fragment">ParallelizationInfo</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/physical/base/Exchange.html#getSenderParallelizationInfo-java.util.List-">getSenderParallelizationInfo</a></span>(<a href="https://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/drill/exec/proto/CoordinationProtos.DrillbitEndpoint.html" title="class in org.apache.drill.exec.proto">CoordinationProtos.DrillbitEndpoint</a>&gt;&nbsp;receiverFragmentEndpoints)</code>
<div class="block">Provide parallelization parameters for sender side of the exchange.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/physical/base/Exchange.html#setupReceivers-int-java.util.List-">setupReceivers</a></span>(int&nbsp;majorFragmentId,
<a href="https://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/drill/exec/proto/CoordinationProtos.DrillbitEndpoint.html" title="class in org.apache.drill.exec.proto">CoordinationProtos.DrillbitEndpoint</a>&gt;&nbsp;receiverLocations)</code>
<div class="block">Inform this Exchange node about its receiver locations.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/physical/base/Exchange.html#setupSenders-int-java.util.List-">setupSenders</a></span>(int&nbsp;majorFragmentId,
<a href="https://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/drill/exec/proto/CoordinationProtos.DrillbitEndpoint.html" title="class in org.apache.drill.exec.proto">CoordinationProtos.DrillbitEndpoint</a>&gt;&nbsp;senderLocations)</code>
<div class="block">Inform this Exchange node about its sender locations.</div>
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<h3>Methods inherited from interface&nbsp;org.apache.drill.exec.physical.base.<a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html" title="interface in org.apache.drill.exec.physical.base">PhysicalOperator</a></h3>
<code><a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#accept-org.apache.drill.exec.physical.base.PhysicalVisitor-X-">accept</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#getCost--">getCost</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#getInitialAllocation--">getInitialAllocation</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#getMaxAllocation--">getMaxAllocation</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#getNewWithChildren-java.util.List-">getNewWithChildren</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#getOperatorId--">getOperatorId</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#getOperatorType--">getOperatorType</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#getSVMode--">getSVMode</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#getUserName--">getUserName</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#isBufferedOperator-org.apache.drill.exec.ops.QueryContext-">isBufferedOperator</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#isExecutable--">isExecutable</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#setCost-org.apache.drill.exec.planner.cost.PrelCostEstimates-">setCost</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#setMaxAllocation-long-">setMaxAllocation</a>, <a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html#setOperatorId-int-">setOperatorId</a></code></li>
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<h3>Methods inherited from interface&nbsp;org.apache.drill.common.graph.<a href="../../../../../../org/apache/drill/common/graph/GraphValue.html" title="interface in org.apache.drill.common.graph">GraphValue</a></h3>
<code><a href="../../../../../../org/apache/drill/common/graph/GraphValue.html#accept-org.apache.drill.common.graph.GraphVisitor-">accept</a></code></li>
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<h3>Methods inherited from interface&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#forEach-java.util.function.Consumer-" title="class or interface in java.lang">forEach</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#iterator--" title="class or interface in java.lang">iterator</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#spliterator--" title="class or interface in java.lang">spliterator</a></code></li>
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<h3>Method Detail</h3>
<a name="setupSenders-int-java.util.List-">
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<h4>setupSenders</h4>
<pre>void&nbsp;setupSenders(int&nbsp;majorFragmentId,
<a href="https://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/drill/exec/proto/CoordinationProtos.DrillbitEndpoint.html" title="class in org.apache.drill.exec.proto">CoordinationProtos.DrillbitEndpoint</a>&gt;&nbsp;senderLocations)
throws <a href="../../../../../../org/apache/drill/exec/physical/PhysicalOperatorSetupException.html" title="class in org.apache.drill.exec.physical">PhysicalOperatorSetupException</a></pre>
<div class="block">Inform this Exchange node about its sender locations. This list should be index-ordered the same as the expected
minorFragmentIds for each sender.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>senderLocations</code> - </dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/drill/exec/physical/PhysicalOperatorSetupException.html" title="class in org.apache.drill.exec.physical">PhysicalOperatorSetupException</a></code></dd>
</dl>
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<h4>setupReceivers</h4>
<pre>void&nbsp;setupReceivers(int&nbsp;majorFragmentId,
<a href="https://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/drill/exec/proto/CoordinationProtos.DrillbitEndpoint.html" title="class in org.apache.drill.exec.proto">CoordinationProtos.DrillbitEndpoint</a>&gt;&nbsp;receiverLocations)
throws <a href="../../../../../../org/apache/drill/exec/physical/PhysicalOperatorSetupException.html" title="class in org.apache.drill.exec.physical">PhysicalOperatorSetupException</a></pre>
<div class="block">Inform this Exchange node about its receiver locations. This list should be index-ordered the same as the expected
minorFragmentIds for each receiver.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>receiverLocations</code> - </dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/drill/exec/physical/PhysicalOperatorSetupException.html" title="class in org.apache.drill.exec.physical">PhysicalOperatorSetupException</a></code></dd>
</dl>
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<h4>getSender</h4>
<pre><a href="../../../../../../org/apache/drill/exec/physical/base/Sender.html" title="interface in org.apache.drill.exec.physical.base">Sender</a>&nbsp;getSender(int&nbsp;minorFragmentId,
<a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html" title="interface in org.apache.drill.exec.physical.base">PhysicalOperator</a>&nbsp;child)
throws <a href="../../../../../../org/apache/drill/exec/physical/PhysicalOperatorSetupException.html" title="class in org.apache.drill.exec.physical">PhysicalOperatorSetupException</a></pre>
<div class="block">Get the Sender associated with the given minorFragmentId. Cannot be called until after setupSenders() and
setupReceivers() have been called.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>minorFragmentId</code> - The minor fragment id, must be in the range [0, fragment.width).</dd>
<dd><code>child</code> - The feeding node for the requested sender.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The materialized sender for the given arguments.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/drill/exec/physical/PhysicalOperatorSetupException.html" title="class in org.apache.drill.exec.physical">PhysicalOperatorSetupException</a></code></dd>
</dl>
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<h4>getReceiver</h4>
<pre><a href="../../../../../../org/apache/drill/exec/physical/base/Receiver.html" title="interface in org.apache.drill.exec.physical.base">Receiver</a>&nbsp;getReceiver(int&nbsp;minorFragmentId)</pre>
<div class="block">Get the Receiver associated with the given minorFragmentId. Cannot be called until after setupSenders() and
setupReceivers() have been called.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>minorFragmentId</code> - The minor fragment id, must be in the range [0, fragment.width).</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The materialized recevier for the given arguments.</dd>
</dl>
</li>
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<h4>getSenderMemory</h4>
<pre>long&nbsp;getSenderMemory(int&nbsp;receiverCount,
int&nbsp;senderCount)</pre>
<div class="block">Returns the memory requirement for the sender side of the exchange operator.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>receiverCount</code> - number of receivers at the receiving end of this exchange operator.</dd>
<dd><code>senderCount</code> - number of senders sending the rows for this exchange operator.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Total memory required by this operator.</dd>
</dl>
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<h4>getReceiverMemory</h4>
<pre>long&nbsp;getReceiverMemory(int&nbsp;receiverCount,
int&nbsp;senderCount)</pre>
<div class="block">Returns the memory requirement for the receiver side of the exchange operator.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>receiverCount</code> - number of receivers receiving the rows sent by the sender side of this
exchange operator.</dd>
<dd><code>senderCount</code> - number of senders sending the rows.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Total memory required by this operator.</dd>
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<h4>getSenderParallelizationInfo</h4>
<pre><a href="../../../../../../org/apache/drill/exec/planner/fragment/ParallelizationInfo.html" title="class in org.apache.drill.exec.planner.fragment">ParallelizationInfo</a>&nbsp;getSenderParallelizationInfo(<a href="https://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/drill/exec/proto/CoordinationProtos.DrillbitEndpoint.html" title="class in org.apache.drill.exec.proto">CoordinationProtos.DrillbitEndpoint</a>&gt;&nbsp;receiverFragmentEndpoints)</pre>
<div class="block">Provide parallelization parameters for sender side of the exchange. Output includes min width,
max width and affinity to Drillbits.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>receiverFragmentEndpoints</code> - Endpoints assigned to receiver fragment if available, otherwise an empty list.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Sender <a href="../../../../../../org/apache/drill/exec/planner/fragment/ParallelizationInfo.html" title="class in org.apache.drill.exec.planner.fragment"><code>ParallelizationInfo</code></a>.</dd>
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<h4>getReceiverParallelizationInfo</h4>
<pre><a href="../../../../../../org/apache/drill/exec/planner/fragment/ParallelizationInfo.html" title="class in org.apache.drill.exec.planner.fragment">ParallelizationInfo</a>&nbsp;getReceiverParallelizationInfo(<a href="https://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/drill/exec/proto/CoordinationProtos.DrillbitEndpoint.html" title="class in org.apache.drill.exec.proto">CoordinationProtos.DrillbitEndpoint</a>&gt;&nbsp;senderFragmentEndpoints)</pre>
<div class="block">Provide parallelization parameters for receiver side of the exchange. Output includes min width,
max width and affinity to Drillbits.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>senderFragmentEndpoints</code> - Endpoints assigned to receiver fragment if available, otherwise an empty list</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Receiver <a href="../../../../../../org/apache/drill/exec/planner/fragment/ParallelizationInfo.html" title="class in org.apache.drill.exec.planner.fragment"><code>ParallelizationInfo</code></a>.</dd>
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<h4>getChild</h4>
<pre><a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html" title="interface in org.apache.drill.exec.physical.base">PhysicalOperator</a>&nbsp;getChild()</pre>
<div class="block">Return the feeding child of this operator node.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The feeding child of this operator node.</dd>
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<h4>getParallelizationDependency</h4>
<pre><a href="../../../../../../org/apache/drill/exec/physical/base/Exchange.ParallelizationDependency.html" title="enum in org.apache.drill.exec.physical.base">Exchange.ParallelizationDependency</a>&nbsp;getParallelizationDependency()</pre>
<div class="block">Get the parallelization dependency of the Exchange.</div>
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