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| <div class="subTitle">org.apache.ignite.cache.affinity.rendezvous</div> |
| <h2 title="Class CacheRendezvousAffinityFunction" class="title">Class CacheRendezvousAffinityFunction</h2> |
| </div> |
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| <ul class="inheritance"> |
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| <li> |
| <ul class="inheritance"> |
| <li>org.apache.ignite.cache.affinity.rendezvous.CacheRendezvousAffinityFunction</li> |
| </ul> |
| </li> |
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| <div class="description"> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Externalizable.html?is-external=true" title="class or interface in java.io">Externalizable</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity">CacheAffinityFunction</a></dd> |
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| <br> |
| <pre>public class <span class="strong">CacheRendezvousAffinityFunction</span> |
| extends <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> |
| implements <a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity">CacheAffinityFunction</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/io/Externalizable.html?is-external=true" title="class or interface in java.io">Externalizable</a></pre> |
| <div class="block">Affinity function for partitioned cache based on Highest Random Weight algorithm. |
| This function supports the following configuration: |
| <ul> |
| <li> |
| <code>partitions</code> - Number of partitions to spread across nodes. |
| </li> |
| <li> |
| <code>excludeNeighbors</code> - If set to <code>true</code>, will exclude same-host-neighbors |
| from being backups of each other. Note that <code>backupFilter</code> is ignored if |
| <code>excludeNeighbors</code> is set to <code>true</code>. |
| </li> |
| <li> |
| <code>backupFilter</code> - Optional filter for back up nodes. If provided, then only |
| nodes that pass this filter will be selected as backup nodes. If not provided, then |
| primary and backup nodes will be selected out of all nodes available for this cache. |
| </li> |
| </ul> |
| <p> |
| Cache affinity can be configured for individual caches via <a href="../../../../../../org/apache/ignite/configuration/CacheConfiguration.html#getAffinity()"><code>CacheConfiguration.getAffinity()</code></a> method.</div> |
| <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../../serialized-form.html#org.apache.ignite.cache.affinity.rendezvous.CacheRendezvousAffinityFunction">Serialized Form</a></dd></dl> |
| </li> |
| </ul> |
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| <!-- =========== FIELD SUMMARY =========== --> |
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| <h3>Field Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> |
| <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><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#DFLT_PARTITION_COUNT">DFLT_PARTITION_COUNT</a></strong></code> |
| <div class="block">Default number of partitions.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor_summary"> |
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| </a> |
| <h3>Constructor Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#CacheRendezvousAffinityFunction()">CacheRendezvousAffinityFunction</a></strong>()</code> |
| <div class="block">Empty constructor with all defaults.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#CacheRendezvousAffinityFunction(boolean)">CacheRendezvousAffinityFunction</a></strong>(boolean exclNeighbors)</code> |
| <div class="block">Initializes affinity with flag to exclude same-host-neighbors from being backups of each other |
| and specified number of backups.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#CacheRendezvousAffinityFunction(boolean, int)">CacheRendezvousAffinityFunction</a></strong>(boolean exclNeighbors, |
| int parts)</code> |
| <div class="block">Initializes affinity with flag to exclude same-host-neighbors from being backups of each other, |
| and specified number of backups and partitions.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#CacheRendezvousAffinityFunction(int, org.apache.ignite.lang.IgniteBiPredicate)">CacheRendezvousAffinityFunction</a></strong>(int parts, |
| <a href="../../../../../../org/apache/ignite/lang/IgniteBiPredicate.html" title="interface in org.apache.ignite.lang">IgniteBiPredicate</a><span class='angle_bracket'><</span><a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a>,<a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span> backupFilter)</code> |
| <div class="block">Initializes optional counts for replicas and backups.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method_summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span>Methods</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</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></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#assignPartition(int, java.util.List, int, java.util.Map)">assignPartition</a></strong>(int part, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</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, |
| int backups, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><span class='angle_bracket'><</span><a href="http://docs.oracle.com/javase/7/docs/api/java/util/UUID.html?is-external=true" title="class or interface in java.util">UUID</a>,<a href="http://docs.oracle.com/javase/7/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><span class='angle_bracket'>></span> neighborhoodCache)</code> |
| <div class="block">Returns collection of nodes (primary first) for specified partition.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><span class='angle_bracket'><</span><a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</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><span class='angle_bracket'>></span></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#assignPartitions(org.apache.ignite.cache.affinity.CacheAffinityFunctionContext)">assignPartitions</a></strong>(<a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunctionContext.html" title="interface in org.apache.ignite.cache.affinity">CacheAffinityFunctionContext</a> affCtx)</code> |
| <div class="block">Gets affinity nodes for a partition.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/ignite/lang/IgniteBiPredicate.html" title="interface in org.apache.ignite.lang">IgniteBiPredicate</a><span class='angle_bracket'><</span><a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a>,<a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#getBackupFilter()">getBackupFilter</a></strong>()</code> |
| <div class="block">Gets optional backup filter.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityNodeHashResolver.html" title="interface in org.apache.ignite.cache.affinity">CacheAffinityNodeHashResolver</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#getHashIdResolver()">getHashIdResolver</a></strong>()</code> |
| <div class="block">Gets hash ID resolver for nodes.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#getPartitions()">getPartitions</a></strong>()</code> |
| <div class="block">Gets total number of key partitions.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#isExcludeNeighbors()">isExcludeNeighbors</a></strong>()</code> |
| <div class="block">Checks flag to exclude same-host-neighbors from being backups of each other (default is <code>false</code>).</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#partition(java.lang.Object)">partition</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> key)</code> |
| <div class="block">Gets partition number for a given key starting from <code>0</code>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#partitions()">partitions</a></strong>()</code> |
| <div class="block">Gets total number of partitions available.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#readExternal(java.io.ObjectInput)">readExternal</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/ObjectInput.html?is-external=true" title="class or interface in java.io">ObjectInput</a> in)</code></td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#removeNode(java.util.UUID)">removeNode</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/UUID.html?is-external=true" title="class or interface in java.util">UUID</a> nodeId)</code> |
| <div class="block">Removes node from affinity.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#reset()">reset</a></strong>()</code> |
| <div class="block">Resets cache affinity to its initial state.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#setBackupFilter(org.apache.ignite.lang.IgniteBiPredicate)">setBackupFilter</a></strong>(<a href="../../../../../../org/apache/ignite/lang/IgniteBiPredicate.html" title="interface in org.apache.ignite.lang">IgniteBiPredicate</a><span class='angle_bracket'><</span><a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a>,<a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span> backupFilter)</code> |
| <div class="block">Sets optional backup filter.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#setExcludeNeighbors(boolean)">setExcludeNeighbors</a></strong>(boolean exclNeighbors)</code> |
| <div class="block">Sets flag to exclude same-host-neighbors from being backups of each other (default is <code>false</code>).</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#setHashIdResolver(org.apache.ignite.cache.affinity.CacheAffinityNodeHashResolver)">setHashIdResolver</a></strong>(<a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityNodeHashResolver.html" title="interface in org.apache.ignite.cache.affinity">CacheAffinityNodeHashResolver</a> hashIdRslvr)</code> |
| <div class="block">Sets hash ID resolver for nodes.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#setPartitions(int)">setPartitions</a></strong>(int parts)</code> |
| <div class="block">Sets total number of partitions.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/ignite/cache/affinity/rendezvous/CacheRendezvousAffinityFunction.html#writeExternal(java.io.ObjectOutput)">writeExternal</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/ObjectOutput.html?is-external=true" title="class or interface in java.io">ObjectOutput</a> out)</code></td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods_inherited_from_class_java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/7/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/7/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/7/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/7/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/7/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/7/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/7/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/7/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/7/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/7/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/7/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/7/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field_detail"> |
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| </a> |
| <h3>Field Detail</h3> |
| <a name="DFLT_PARTITION_COUNT"> |
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| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>DFLT_PARTITION_COUNT</h4> |
| <pre>public static final int DFLT_PARTITION_COUNT</pre> |
| <div class="block">Default number of partitions.</div> |
| <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../../constant-values.html#org.apache.ignite.cache.affinity.rendezvous.CacheRendezvousAffinityFunction.DFLT_PARTITION_COUNT">Constant Field Values</a></dd></dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor_detail"> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="CacheRendezvousAffinityFunction()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>CacheRendezvousAffinityFunction</h4> |
| <pre>public CacheRendezvousAffinityFunction()</pre> |
| <div class="block">Empty constructor with all defaults.</div> |
| </li> |
| </ul> |
| <a name="CacheRendezvousAffinityFunction(boolean)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>CacheRendezvousAffinityFunction</h4> |
| <pre>public CacheRendezvousAffinityFunction(boolean exclNeighbors)</pre> |
| <div class="block">Initializes affinity with flag to exclude same-host-neighbors from being backups of each other |
| and specified number of backups. |
| <p> |
| Note that <code>excludeNeighbors</code> parameter is ignored if <code>#getBackupFilter()</code> is set.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>exclNeighbors</code> - <code>True</code> if nodes residing on the same host may not act as backups |
| of each other.</dd></dl> |
| </li> |
| </ul> |
| <a name="CacheRendezvousAffinityFunction(boolean, int)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>CacheRendezvousAffinityFunction</h4> |
| <pre>public CacheRendezvousAffinityFunction(boolean exclNeighbors, |
| int parts)</pre> |
| <div class="block">Initializes affinity with flag to exclude same-host-neighbors from being backups of each other, |
| and specified number of backups and partitions. |
| <p> |
| Note that <code>excludeNeighbors</code> parameter is ignored if <code>#getBackupFilter()</code> is set.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>exclNeighbors</code> - <code>True</code> if nodes residing on the same host may not act as backups |
| of each other.</dd><dd><code>parts</code> - Total number of partitions.</dd></dl> |
| </li> |
| </ul> |
| <a name="CacheRendezvousAffinityFunction(int, org.apache.ignite.lang.IgniteBiPredicate)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>CacheRendezvousAffinityFunction</h4> |
| <pre>public CacheRendezvousAffinityFunction(int parts, |
| @Nullable |
| <a href="../../../../../../org/apache/ignite/lang/IgniteBiPredicate.html" title="interface in org.apache.ignite.lang">IgniteBiPredicate</a><span class='angle_bracket'><</span><a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a>,<a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span> backupFilter)</pre> |
| <div class="block">Initializes optional counts for replicas and backups. |
| <p> |
| Note that <code>excludeNeighbors</code> parameter is ignored if <code>backupFilter</code> is set.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>parts</code> - Total number of partitions.</dd><dd><code>backupFilter</code> - Optional back up filter for nodes. If provided, backups will be selected |
| from all nodes that pass this filter. First argument for this filter is primary node, and second |
| argument is node being tested. |
| <p> |
| Note that <code>excludeNeighbors</code> parameter is ignored if <code>backupFilter</code> is set.</dd></dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method_detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="getPartitions()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getPartitions</h4> |
| <pre>public int getPartitions()</pre> |
| <div class="block">Gets total number of key partitions. To ensure that all partitions are |
| equally distributed across all nodes, please make sure that this |
| number is significantly larger than a number of nodes. Also, partition |
| size should be relatively small. Try to avoid having partitions with more |
| than quarter million keys. |
| <p> |
| Note that for fully replicated caches this method should always |
| return <code>1</code>.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Total partition count.</dd></dl> |
| </li> |
| </ul> |
| <a name="setPartitions(int)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setPartitions</h4> |
| <pre>public void setPartitions(int parts)</pre> |
| <div class="block">Sets total number of partitions.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>parts</code> - Total number of partitions.</dd></dl> |
| </li> |
| </ul> |
| <a name="getHashIdResolver()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getHashIdResolver</h4> |
| <pre>public <a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityNodeHashResolver.html" title="interface in org.apache.ignite.cache.affinity">CacheAffinityNodeHashResolver</a> getHashIdResolver()</pre> |
| <div class="block">Gets hash ID resolver for nodes. This resolver is used to provide |
| alternate hash ID, other than node ID. |
| <p> |
| Node IDs constantly change when nodes get restarted, which causes them to |
| be placed on different locations in the hash ring, and hence causing |
| repartitioning. Providing an alternate hash ID, which survives node restarts, |
| puts node on the same location on the hash ring, hence minimizing required |
| repartitioning.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Hash ID resolver.</dd></dl> |
| </li> |
| </ul> |
| <a name="setHashIdResolver(org.apache.ignite.cache.affinity.CacheAffinityNodeHashResolver)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setHashIdResolver</h4> |
| <pre>public void setHashIdResolver(<a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityNodeHashResolver.html" title="interface in org.apache.ignite.cache.affinity">CacheAffinityNodeHashResolver</a> hashIdRslvr)</pre> |
| <div class="block">Sets hash ID resolver for nodes. This resolver is used to provide |
| alternate hash ID, other than node ID. |
| <p> |
| Node IDs constantly change when nodes get restarted, which causes them to |
| be placed on different locations in the hash ring, and hence causing |
| repartitioning. Providing an alternate hash ID, which survives node restarts, |
| puts node on the same location on the hash ring, hence minimizing required |
| repartitioning.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>hashIdRslvr</code> - Hash ID resolver.</dd></dl> |
| </li> |
| </ul> |
| <a name="getBackupFilter()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getBackupFilter</h4> |
| <pre>@Nullable |
| public <a href="../../../../../../org/apache/ignite/lang/IgniteBiPredicate.html" title="interface in org.apache.ignite.lang">IgniteBiPredicate</a><span class='angle_bracket'><</span><a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a>,<a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span> getBackupFilter()</pre> |
| <div class="block">Gets optional backup filter. If not <code>null</code>, backups will be selected |
| from all nodes that pass this filter. First node passed to this filter is primary node, |
| and second node is a node being tested. |
| <p> |
| Note that <code>excludeNeighbors</code> parameter is ignored if <code>backupFilter</code> is set.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Optional backup filter.</dd></dl> |
| </li> |
| </ul> |
| <a name="setBackupFilter(org.apache.ignite.lang.IgniteBiPredicate)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setBackupFilter</h4> |
| <pre>public void setBackupFilter(@Nullable |
| <a href="../../../../../../org/apache/ignite/lang/IgniteBiPredicate.html" title="interface in org.apache.ignite.lang">IgniteBiPredicate</a><span class='angle_bracket'><</span><a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a>,<a href="../../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span> backupFilter)</pre> |
| <div class="block">Sets optional backup filter. If provided, then backups will be selected from all |
| nodes that pass this filter. First node being passed to this filter is primary node, |
| and second node is a node being tested. |
| <p> |
| Note that <code>excludeNeighbors</code> parameter is ignored if <code>backupFilter</code> is set.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>backupFilter</code> - Optional backup filter.</dd></dl> |
| </li> |
| </ul> |
| <a name="isExcludeNeighbors()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isExcludeNeighbors</h4> |
| <pre>public boolean isExcludeNeighbors()</pre> |
| <div class="block">Checks flag to exclude same-host-neighbors from being backups of each other (default is <code>false</code>). |
| <p> |
| Note that <code>excludeNeighbors</code> parameter is ignored if <code>#getBackupFilter()</code> is set.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd><code>True</code> if nodes residing on the same host may not act as backups of each other.</dd></dl> |
| </li> |
| </ul> |
| <a name="setExcludeNeighbors(boolean)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setExcludeNeighbors</h4> |
| <pre>public void setExcludeNeighbors(boolean exclNeighbors)</pre> |
| <div class="block">Sets flag to exclude same-host-neighbors from being backups of each other (default is <code>false</code>). |
| <p> |
| Note that <code>excludeNeighbors</code> parameter is ignored if <code>#getBackupFilter()</code> is set.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>exclNeighbors</code> - <code>True</code> if nodes residing on the same host may not act as backups of each other.</dd></dl> |
| </li> |
| </ul> |
| <a name="assignPartition(int, java.util.List, int, java.util.Map)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>assignPartition</h4> |
| <pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</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> assignPartition(int part, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</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, |
| int backups, |
| @Nullable |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><span class='angle_bracket'><</span><a href="http://docs.oracle.com/javase/7/docs/api/java/util/UUID.html?is-external=true" title="class or interface in java.util">UUID</a>,<a href="http://docs.oracle.com/javase/7/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><span class='angle_bracket'>></span> neighborhoodCache)</pre> |
| <div class="block">Returns collection of nodes (primary first) for specified partition.</div> |
| </li> |
| </ul> |
| <a name="reset()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>reset</h4> |
| <pre>public void reset()</pre> |
| <div class="block">Resets cache affinity to its initial state. This method will be called by |
| the system any time the affinity has been sent to remote node where |
| it has to be reinitialized. If your implementation of affinity function |
| has no initialization logic, leave this method empty.</div> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html#reset()">reset</a></code> in interface <code><a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity">CacheAffinityFunction</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="partitions()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>partitions</h4> |
| <pre>public int partitions()</pre> |
| <div class="block">Gets total number of partitions available. All caches should always provide |
| correct partition count which should be the same on all participating nodes. |
| Note that partitions should always be numbered from <code>0</code> inclusively to |
| <code>N</code> exclusively without any gaps.</div> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html#partitions()">partitions</a></code> in interface <code><a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity">CacheAffinityFunction</a></code></dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Total partition count.</dd></dl> |
| </li> |
| </ul> |
| <a name="partition(java.lang.Object)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>partition</h4> |
| <pre>public int partition(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> key)</pre> |
| <div class="block">Gets partition number for a given key starting from <code>0</code>. Partitioned caches |
| should make sure that keys are about evenly distributed across all partitions |
| from <code>0</code> to <a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html#partitions()"><code>partition count</code></a> for best performance. |
| <p> |
| Note that for fully replicated caches it is possible to segment key sets among different |
| grid node groups. In that case each node group should return a unique partition |
| number. However, unlike partitioned cache, mappings of keys to nodes in |
| replicated caches are constant and a node cannot migrate from one partition |
| to another.</div> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html#partition(java.lang.Object)">partition</a></code> in interface <code><a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity">CacheAffinityFunction</a></code></dd> |
| <dt><span class="strong">Parameters:</span></dt><dd><code>key</code> - Key to get partition for.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Partition number for a given key.</dd></dl> |
| </li> |
| </ul> |
| <a name="assignPartitions(org.apache.ignite.cache.affinity.CacheAffinityFunctionContext)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>assignPartitions</h4> |
| <pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><span class='angle_bracket'><</span><a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</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><span class='angle_bracket'>></span> assignPartitions(<a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunctionContext.html" title="interface in org.apache.ignite.cache.affinity">CacheAffinityFunctionContext</a> affCtx)</pre> |
| <div class="block">Gets affinity nodes for a partition. In case of replicated cache, all returned |
| nodes are updated in the same manner. In case of partitioned cache, the returned |
| list should contain only the primary and back up nodes with primary node being |
| always first. |
| <p> |
| Note that partitioned affinity must obey the following contract: given that node |
| <code>N</code> is primary for some key <code>K</code>, if any other node(s) leave |
| grid and no node joins grid, node <code>N</code> will remain primary for key <code>K</code>.</div> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html#assignPartitions(org.apache.ignite.cache.affinity.CacheAffinityFunctionContext)">assignPartitions</a></code> in interface <code><a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity">CacheAffinityFunction</a></code></dd> |
| <dt><span class="strong">Parameters:</span></dt><dd><code>affCtx</code> - Affinity function context. Will provide all required information to calculate |
| new partition assignments.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Unmodifiable list indexed by partition number. Each element of array is a collection in which |
| first node is a primary node and other nodes are backup nodes.</dd></dl> |
| </li> |
| </ul> |
| <a name="removeNode(java.util.UUID)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>removeNode</h4> |
| <pre>public void removeNode(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/UUID.html?is-external=true" title="class or interface in java.util">UUID</a> nodeId)</pre> |
| <div class="block">Removes node from affinity. This method is called when it is safe to remove left node from |
| affinity mapping.</div> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html#removeNode(java.util.UUID)">removeNode</a></code> in interface <code><a href="../../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity">CacheAffinityFunction</a></code></dd> |
| <dt><span class="strong">Parameters:</span></dt><dd><code>nodeId</code> - ID of node to remove.</dd></dl> |
| </li> |
| </ul> |
| <a name="writeExternal(java.io.ObjectOutput)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>writeExternal</h4> |
| <pre>public void writeExternal(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/ObjectOutput.html?is-external=true" title="class or interface in java.io">ObjectOutput</a> out) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Externalizable.html?is-external=true#writeExternal(java.io.ObjectOutput)" title="class or interface in java.io">writeExternal</a></code> in interface <code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Externalizable.html?is-external=true" title="class or interface in java.io">Externalizable</a></code></dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd></dl> |
| </li> |
| </ul> |
| <a name="readExternal(java.io.ObjectInput)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>readExternal</h4> |
| <pre>public void readExternal(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/ObjectInput.html?is-external=true" title="class or interface in java.io">ObjectInput</a> in) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</a></pre> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Externalizable.html?is-external=true#readExternal(java.io.ObjectInput)" title="class or interface in java.io">readExternal</a></code> in interface <code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Externalizable.html?is-external=true" title="class or interface in java.io">Externalizable</a></code></dd> |
| <dt><span class="strong">Throws:</span></dt> |
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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://incubator.apache.org/projects/ignite.html"><nobr>2015 Copyright © Apache Software Foundation</nobr></a> </td> </tr> </tbody> </table> </td> <td width="100%" align="right" valign="center"> <a href="https://twitter.com/ApacheIgnite" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @ApacheIgnite</a> <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script> </td> </tr> <tr> <td colspan="2" valign="top" align="left"> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <b>Apache Ignite Fabric</b> </td> <td>: ver. <strong>1.0.0-RC3</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: March 24 2015 </td> </tr> </tbody> </table> </td> </tr> </table></small></p> |
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