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| <h2 title="Class IgniteHadoopWeightedMapReducePlanner" class="title">Class IgniteHadoopWeightedMapReducePlanner</h2> |
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| <li><a href="../../../../../org/apache/ignite/hadoop/planner/HadoopAbstractMapReducePlanner.html" title="class in org.apache.ignite.hadoop.planner">org.apache.ignite.hadoop.planner.HadoopAbstractMapReducePlanner</a></li> |
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| <li>org.apache.ignite.hadoop.mapreduce.IgniteHadoopWeightedMapReducePlanner</li> |
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| <div class="description"> |
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| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../org/apache/ignite/hadoop/HadoopMapReducePlanner.html" title="interface in org.apache.ignite.hadoop">HadoopMapReducePlanner</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public class <span class="typeNameLabel">IgniteHadoopWeightedMapReducePlanner</span> |
| extends <a href="../../../../../org/apache/ignite/hadoop/planner/HadoopAbstractMapReducePlanner.html" title="class in org.apache.ignite.hadoop.planner">HadoopAbstractMapReducePlanner</a></pre> |
| <div class="block">Map-reduce planner which assigns mappers and reducers based on their "weights". Weight describes how much resources |
| are required to execute particular map or reduce task. |
| <p> |
| Plan creation consists of two steps: assigning mappers and assigning reducers. |
| <p> |
| Mappers are assigned based on input split data location. For each input split we search for nodes where |
| its data is stored. Planner tries to assign mappers to their affinity nodes first. This process is governed by two |
| properties: |
| <ul> |
| <li><b><code>localMapperWeight</code></b> - weight of a map task when it is executed on an affinity node;</li> |
| <li><b><code>remoteMapperWeight</code></b> - weight of a map task when it is executed on a non-affinity node.</li> |
| </ul> |
| Planning algorithm assign mappers so that total resulting weight on all nodes is minimum possible. |
| <p> |
| Reducers are assigned differently. First we try to distribute reducers across nodes with mappers. This approach |
| could minimize expensive data transfer over network. Reducer assigned to a node with mapper is considered |
| <b><code>local</code></b>. Otherwise it is considered <b><code>remote</code></b>. This process continue until certain weight |
| threshold is reached what means that current node is already too busy and it should not have higher priority over |
| other nodes any more. Threshold can be configured using <b><code>preferLocalReducerThresholdWeight</code></b> property. |
| <p> |
| When local reducer threshold is reached on all nodes, we distribute remaining reducers based on their local and |
| remote weights in the same way as it is done for mappers. This process is governed by two |
| properties: |
| <ul> |
| <li><b><code>localReducerWeight</code></b> - weight of a reduce task when it is executed on a node with mappers;</li> |
| <li><b><code>remoteReducerWeight</code></b> - weight of a map task when it is executed on a node without mappers.</li> |
| </ul></div> |
| </li> |
| </ul> |
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| <h3>Field Summary</h3> |
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| <caption><span>Fields</span><span class="tabEnd"> </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>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#DFLT_LOC_MAPPER_WEIGHT">DFLT_LOC_MAPPER_WEIGHT</a></span></code> |
| <div class="block">Default local mapper weight.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#DFLT_LOC_REDUCER_WEIGHT">DFLT_LOC_REDUCER_WEIGHT</a></span></code> |
| <div class="block">Default local reducer weight.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#DFLT_PREFER_LOCAL_REDUCER_THRESHOLD_WEIGHT">DFLT_PREFER_LOCAL_REDUCER_THRESHOLD_WEIGHT</a></span></code> |
| <div class="block">Default reducer migration threshold weight.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#DFLT_RMT_MAPPER_WEIGHT">DFLT_RMT_MAPPER_WEIGHT</a></span></code> |
| <div class="block">Default remote mapper weight.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#DFLT_RMT_REDUCER_WEIGHT">DFLT_RMT_REDUCER_WEIGHT</a></span></code> |
| <div class="block">Default remote reducer weight.</div> |
| </td> |
| </tr> |
| </table> |
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| <h3>Fields inherited from class org.apache.ignite.hadoop.planner.<a href="../../../../../org/apache/ignite/hadoop/planner/HadoopAbstractMapReducePlanner.html" title="class in org.apache.ignite.hadoop.planner">HadoopAbstractMapReducePlanner</a></h3> |
| <code><a href="../../../../../org/apache/ignite/hadoop/planner/HadoopAbstractMapReducePlanner.html#ignite">ignite</a>, <a href="../../../../../org/apache/ignite/hadoop/planner/HadoopAbstractMapReducePlanner.html#log">log</a></code></li> |
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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/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#IgniteHadoopWeightedMapReducePlanner--">IgniteHadoopWeightedMapReducePlanner</a></span>()</code> </td> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#getLocalMapperWeight--">getLocalMapperWeight</a></span>()</code> |
| <div class="block">Get local mapper weight.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#getLocalReducerWeight--">getLocalReducerWeight</a></span>()</code> |
| <div class="block">Get local reducer weight.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#getPreferLocalReducerThresholdWeight--">getPreferLocalReducerThresholdWeight</a></span>()</code> |
| <div class="block">Get reducer migration threshold weight.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#getRemoteMapperWeight--">getRemoteMapperWeight</a></span>()</code> |
| <div class="block">Get remote mapper weight.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#getRemoteReducerWeight--">getRemoteReducerWeight</a></span>()</code> |
| <div class="block">Get remote reducer weight.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/ignite/hadoop/HadoopMapReducePlan.html" title="interface in org.apache.ignite.hadoop">HadoopMapReducePlan</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#preparePlan-org.apache.ignite.hadoop.HadoopJob-java.util.Collection-org.apache.ignite.hadoop.HadoopMapReducePlan-">preparePlan</a></span>(<a href="../../../../../org/apache/ignite/hadoop/HadoopJob.html" title="interface in org.apache.ignite.hadoop">HadoopJob</a> job, |
| <a href="http://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span><a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span> nodes, |
| @Nullable <a href="../../../../../org/apache/ignite/hadoop/HadoopMapReducePlan.html" title="interface in org.apache.ignite.hadoop">HadoopMapReducePlan</a> oldPlan)</code> |
| <div class="block">Prepares map-reduce execution plan for the given job and topology.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html" title="class in org.apache.ignite.hadoop.mapreduce">IgniteHadoopWeightedMapReducePlanner</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#setLocalMapperWeight-int-">setLocalMapperWeight</a></span>(int locMapperWeight)</code> |
| <div class="block">Set local mapper weight.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html" title="class in org.apache.ignite.hadoop.mapreduce">IgniteHadoopWeightedMapReducePlanner</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#setLocalReducerWeight-int-">setLocalReducerWeight</a></span>(int locReducerWeight)</code> |
| <div class="block">Set local reducer weight.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html" title="class in org.apache.ignite.hadoop.mapreduce">IgniteHadoopWeightedMapReducePlanner</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#setPreferLocalReducerThresholdWeight-int-">setPreferLocalReducerThresholdWeight</a></span>(int reducerMigrationThresholdWeight)</code> |
| <div class="block">Set reducer migration threshold weight.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html" title="class in org.apache.ignite.hadoop.mapreduce">IgniteHadoopWeightedMapReducePlanner</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#setRemoteMapperWeight-int-">setRemoteMapperWeight</a></span>(int rmtMapperWeight)</code> |
| <div class="block">Set remote mapper weight.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html" title="class in org.apache.ignite.hadoop.mapreduce">IgniteHadoopWeightedMapReducePlanner</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#setRemoteReducerWeight-int-">setRemoteReducerWeight</a></span>(int rmtReducerWeight)</code> |
| <div class="block">Set remote reducer weight.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code><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/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#toString--">toString</a></span>()</code></td> |
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| <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#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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| <h3>Field Detail</h3> |
| <a name="DFLT_LOC_MAPPER_WEIGHT"> |
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| </a> |
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| <h4>DFLT_LOC_MAPPER_WEIGHT</h4> |
| <pre>public static final int DFLT_LOC_MAPPER_WEIGHT</pre> |
| <div class="block">Default local mapper weight.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.apache.ignite.hadoop.mapreduce.IgniteHadoopWeightedMapReducePlanner.DFLT_LOC_MAPPER_WEIGHT">Constant Field Values</a></dd> |
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| <h4>DFLT_RMT_MAPPER_WEIGHT</h4> |
| <pre>public static final int DFLT_RMT_MAPPER_WEIGHT</pre> |
| <div class="block">Default remote mapper weight.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.apache.ignite.hadoop.mapreduce.IgniteHadoopWeightedMapReducePlanner.DFLT_RMT_MAPPER_WEIGHT">Constant Field Values</a></dd> |
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| <h4>DFLT_LOC_REDUCER_WEIGHT</h4> |
| <pre>public static final int DFLT_LOC_REDUCER_WEIGHT</pre> |
| <div class="block">Default local reducer weight.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.apache.ignite.hadoop.mapreduce.IgniteHadoopWeightedMapReducePlanner.DFLT_LOC_REDUCER_WEIGHT">Constant Field Values</a></dd> |
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| <h4>DFLT_RMT_REDUCER_WEIGHT</h4> |
| <pre>public static final int DFLT_RMT_REDUCER_WEIGHT</pre> |
| <div class="block">Default remote reducer weight.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.apache.ignite.hadoop.mapreduce.IgniteHadoopWeightedMapReducePlanner.DFLT_RMT_REDUCER_WEIGHT">Constant Field Values</a></dd> |
| </dl> |
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| <a name="DFLT_PREFER_LOCAL_REDUCER_THRESHOLD_WEIGHT"> |
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| <h4>DFLT_PREFER_LOCAL_REDUCER_THRESHOLD_WEIGHT</h4> |
| <pre>public static final int DFLT_PREFER_LOCAL_REDUCER_THRESHOLD_WEIGHT</pre> |
| <div class="block">Default reducer migration threshold weight.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.apache.ignite.hadoop.mapreduce.IgniteHadoopWeightedMapReducePlanner.DFLT_PREFER_LOCAL_REDUCER_THRESHOLD_WEIGHT">Constant Field Values</a></dd> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| <li class="blockList"><a name="constructor.detail"> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="IgniteHadoopWeightedMapReducePlanner--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>IgniteHadoopWeightedMapReducePlanner</h4> |
| <pre>public IgniteHadoopWeightedMapReducePlanner()</pre> |
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| <h3>Method Detail</h3> |
| <a name="preparePlan-org.apache.ignite.hadoop.HadoopJob-java.util.Collection-org.apache.ignite.hadoop.HadoopMapReducePlan-"> |
| <!-- --> |
| </a> |
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| <h4>preparePlan</h4> |
| <pre>public <a href="../../../../../org/apache/ignite/hadoop/HadoopMapReducePlan.html" title="interface in org.apache.ignite.hadoop">HadoopMapReducePlan</a> preparePlan(<a href="../../../../../org/apache/ignite/hadoop/HadoopJob.html" title="interface in org.apache.ignite.hadoop">HadoopJob</a> job, |
| <a href="http://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span><a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span> nodes, |
| @Nullable |
| @Nullable <a href="../../../../../org/apache/ignite/hadoop/HadoopMapReducePlan.html" title="interface in org.apache.ignite.hadoop">HadoopMapReducePlan</a> oldPlan) |
| throws <a href="../../../../../org/apache/ignite/IgniteCheckedException.html" title="class in org.apache.ignite">IgniteCheckedException</a></pre> |
| <div class="block">Prepares map-reduce execution plan for the given job and topology.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>job</code> - Job.</dd> |
| <dd><code>nodes</code> - Topology.</dd> |
| <dd><code>oldPlan</code> - Old plan in case of partial failure.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Map reduce plan.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../org/apache/ignite/IgniteCheckedException.html" title="class in org.apache.ignite">IgniteCheckedException</a></code> - If an error occurs.</dd> |
| </dl> |
| </li> |
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| <a name="getLocalMapperWeight--"> |
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| <ul class="blockList"> |
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| <h4>getLocalMapperWeight</h4> |
| <pre>public int getLocalMapperWeight()</pre> |
| <div class="block">Get local mapper weight. This weight is added to a node when a mapper is assigned and it's input split data is |
| located on this node (at least partially). |
| <p> |
| Defaults to <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#DFLT_LOC_MAPPER_WEIGHT"><code>DFLT_LOC_MAPPER_WEIGHT</code></a>.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Remote mapper weight.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setLocalMapperWeight-int-"> |
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| <ul class="blockList"> |
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| <h4>setLocalMapperWeight</h4> |
| <pre>public <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html" title="class in org.apache.ignite.hadoop.mapreduce">IgniteHadoopWeightedMapReducePlanner</a> setLocalMapperWeight(int locMapperWeight)</pre> |
| <div class="block">Set local mapper weight. See <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#getLocalMapperWeight--"><code>getLocalMapperWeight()</code></a> for more information.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>locMapperWeight</code> - Local mapper weight.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>this</code> for chaining.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getRemoteMapperWeight--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>getRemoteMapperWeight</h4> |
| <pre>public int getRemoteMapperWeight()</pre> |
| <div class="block">Get remote mapper weight. This weight is added to a node when a mapper is assigned, but it's input |
| split data is not located on this node. |
| <p> |
| Defaults to <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#DFLT_RMT_MAPPER_WEIGHT"><code>DFLT_RMT_MAPPER_WEIGHT</code></a>.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Remote mapper weight.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setRemoteMapperWeight-int-"> |
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| <h4>setRemoteMapperWeight</h4> |
| <pre>public <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html" title="class in org.apache.ignite.hadoop.mapreduce">IgniteHadoopWeightedMapReducePlanner</a> setRemoteMapperWeight(int rmtMapperWeight)</pre> |
| <div class="block">Set remote mapper weight. See <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#getRemoteMapperWeight--"><code>getRemoteMapperWeight()</code></a> for more information.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>rmtMapperWeight</code> - Remote mapper weight.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>this</code> for chaining.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getLocalReducerWeight--"> |
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| </a> |
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| <h4>getLocalReducerWeight</h4> |
| <pre>public int getLocalReducerWeight()</pre> |
| <div class="block">Get local reducer weight. This weight is added to a node when a reducer is assigned and the node have at least |
| one assigned mapper. |
| <p> |
| Defaults to <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#DFLT_LOC_REDUCER_WEIGHT"><code>DFLT_LOC_REDUCER_WEIGHT</code></a>.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Local reducer weight.</dd> |
| </dl> |
| </li> |
| </ul> |
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| </a> |
| <ul class="blockList"> |
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| <h4>setLocalReducerWeight</h4> |
| <pre>public <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html" title="class in org.apache.ignite.hadoop.mapreduce">IgniteHadoopWeightedMapReducePlanner</a> setLocalReducerWeight(int locReducerWeight)</pre> |
| <div class="block">Set local reducer weight. See <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#getLocalReducerWeight--"><code>getLocalReducerWeight()</code></a> for more information.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>locReducerWeight</code> - Local reducer weight.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>this</code> for chaining.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getRemoteReducerWeight--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>getRemoteReducerWeight</h4> |
| <pre>public int getRemoteReducerWeight()</pre> |
| <div class="block">Get remote reducer weight. This weight is added to a node when a reducer is assigned, but the node doesn't have |
| any assigned mappers. |
| <p> |
| Defaults to <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#DFLT_RMT_REDUCER_WEIGHT"><code>DFLT_RMT_REDUCER_WEIGHT</code></a>.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Remote reducer weight.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setRemoteReducerWeight-int-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>setRemoteReducerWeight</h4> |
| <pre>public <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html" title="class in org.apache.ignite.hadoop.mapreduce">IgniteHadoopWeightedMapReducePlanner</a> setRemoteReducerWeight(int rmtReducerWeight)</pre> |
| <div class="block">Set remote reducer weight. See <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#getRemoteReducerWeight--"><code>getRemoteReducerWeight()</code></a> for more information.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>rmtReducerWeight</code> - Remote reducer weight.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>this</code> for chaining.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getPreferLocalReducerThresholdWeight--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getPreferLocalReducerThresholdWeight</h4> |
| <pre>public int getPreferLocalReducerThresholdWeight()</pre> |
| <div class="block">Get reducer migration threshold weight. When threshold is reached, a node with mappers is no longer considered |
| as preferred for further reducer assignments. |
| <p> |
| Defaults to <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#DFLT_PREFER_LOCAL_REDUCER_THRESHOLD_WEIGHT"><code>DFLT_PREFER_LOCAL_REDUCER_THRESHOLD_WEIGHT</code></a>.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Reducer migration threshold weight.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setPreferLocalReducerThresholdWeight-int-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setPreferLocalReducerThresholdWeight</h4> |
| <pre>public <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html" title="class in org.apache.ignite.hadoop.mapreduce">IgniteHadoopWeightedMapReducePlanner</a> setPreferLocalReducerThresholdWeight(int reducerMigrationThresholdWeight)</pre> |
| <div class="block">Set reducer migration threshold weight. See <a href="../../../../../org/apache/ignite/hadoop/mapreduce/IgniteHadoopWeightedMapReducePlanner.html#getPreferLocalReducerThresholdWeight--"><code>getPreferLocalReducerThresholdWeight()</code></a> for more |
| information.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>reducerMigrationThresholdWeight</code> - Reducer migration threshold weight.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>this</code> for chaining.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="toString--"> |
| <!-- --> |
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| <ul class="blockListLast"> |
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| <h4>toString</h4> |
| <pre>public <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> toString()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><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></code> in class <code><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></code></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>2020 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> </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 Database and Caching Platform</b> </td> <td>: ver. <strong>2.8.0</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: February 27 2020 </td> </tr> </tbody> </table> </td> </tr> </table></small></p> |
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