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<div class="subTitle">org.apache.solr.hadoop.dedup</div>
<h2 title="Class RetainMostRecentUpdateConflictResolver" class="title">Class RetainMostRecentUpdateConflictResolver</h2>
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<dt>All Implemented Interfaces:</dt>
<dd>org.apache.hadoop.conf.Configurable, <a href="../../../../../org/apache/solr/hadoop/dedup/UpdateConflictResolver.html" title="interface in org.apache.solr.hadoop.dedup">UpdateConflictResolver</a></dd>
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<pre>public class <span class="strong">RetainMostRecentUpdateConflictResolver</span>
extends <a href="http://download.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/solr/hadoop/dedup/UpdateConflictResolver.html" title="interface in org.apache.solr.hadoop.dedup">UpdateConflictResolver</a>, org.apache.hadoop.conf.Configurable</pre>
<div class="block">UpdateConflictResolver implementation that ignores all but the most recent
document version, based on a configurable numeric Solr field, which defaults
to the file_last_modified timestamp.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static <a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/solr/hadoop/dedup/RetainMostRecentUpdateConflictResolver.html#COUNTER_GROUP">COUNTER_GROUP</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/solr/hadoop/dedup/RetainMostRecentUpdateConflictResolver.html#DUPLICATES_COUNTER_NAME">DUPLICATES_COUNTER_NAME</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/solr/hadoop/dedup/RetainMostRecentUpdateConflictResolver.html#ORDER_BY_FIELD_NAME_DEFAULT">ORDER_BY_FIELD_NAME_DEFAULT</a></strong></code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/solr/hadoop/dedup/RetainMostRecentUpdateConflictResolver.html#ORDER_BY_FIELD_NAME_KEY">ORDER_BY_FIELD_NAME_KEY</a></strong></code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/solr/hadoop/dedup/RetainMostRecentUpdateConflictResolver.html#OUTDATED_COUNTER_NAME">OUTDATED_COUNTER_NAME</a></strong></code> </td>
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<td class="colOne"><code><strong><a href="../../../../../org/apache/solr/hadoop/dedup/RetainMostRecentUpdateConflictResolver.html#RetainMostRecentUpdateConflictResolver()">RetainMostRecentUpdateConflictResolver</a></strong>()</code> </td>
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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 class="altColor">
<td class="colFirst"><code>org.apache.hadoop.conf.Configuration</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/solr/hadoop/dedup/RetainMostRecentUpdateConflictResolver.html#getConf()">getConf</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="http://download.oracle.com/javase/7/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a><<a href="../../../../../../solr-solrj/org/apache/solr/common/SolrInputDocument.html?is-external=true" title="class or interface in org.apache.solr.common">SolrInputDocument</a>></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/solr/hadoop/dedup/RetainMostRecentUpdateConflictResolver.html#getMaximum(java.util.Iterator,%20java.lang.String,%20java.util.Comparator,%20org.apache.hadoop.mapreduce.Reducer.Context)">getMaximum</a></strong>(<a href="http://download.oracle.com/javase/7/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a><<a href="../../../../../../solr-solrj/org/apache/solr/common/SolrInputDocument.html?is-external=true" title="class or interface in org.apache.solr.common">SolrInputDocument</a>> updates,
<a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> fieldName,
<a href="http://download.oracle.com/javase/7/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</a> child,
org.apache.hadoop.mapreduce.Reducer.Context context)</code>
<div class="block">Returns the most recent document among the colliding updates</div>
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<tr class="altColor">
<td class="colFirst"><code>protected <a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/solr/hadoop/dedup/RetainMostRecentUpdateConflictResolver.html#getOrderByFieldName()">getOrderByFieldName</a></strong>()</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="http://download.oracle.com/javase/7/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a><<a href="../../../../../../solr-solrj/org/apache/solr/common/SolrInputDocument.html?is-external=true" title="class or interface in org.apache.solr.common">SolrInputDocument</a>></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/solr/hadoop/dedup/RetainMostRecentUpdateConflictResolver.html#orderUpdates(org.apache.hadoop.io.Text,%20java.util.Iterator,%20org.apache.hadoop.mapreduce.Reducer.Context)">orderUpdates</a></strong>(org.apache.hadoop.io.Text key,
<a href="http://download.oracle.com/javase/7/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a><<a href="../../../../../../solr-solrj/org/apache/solr/common/SolrInputDocument.html?is-external=true" title="class or interface in org.apache.solr.common">SolrInputDocument</a>> updates,
org.apache.hadoop.mapreduce.Reducer.Context ctx)</code>
<div class="block">Given a list of all colliding document updates for the same unique document
key, this method returns zero or more documents in an application specific
order.</div>
</td>
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<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/solr/hadoop/dedup/RetainMostRecentUpdateConflictResolver.html#setConf(org.apache.hadoop.conf.Configuration)">setConf</a></strong>(org.apache.hadoop.conf.Configuration conf)</code> </td>
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<code><a href="http://download.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://download.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://download.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://download.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://download.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://download.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://download.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://download.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://download.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://download.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://download.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long,%20int)" title="class or interface in java.lang">wait</a></code></li>
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<pre>public static final <a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> ORDER_BY_FIELD_NAME_KEY</pre>
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<pre>public static final <a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> ORDER_BY_FIELD_NAME_DEFAULT</pre>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.solr.hadoop.dedup.RetainMostRecentUpdateConflictResolver.ORDER_BY_FIELD_NAME_DEFAULT">Constant Field Values</a></dd></dl>
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<pre>public static final <a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> COUNTER_GROUP</pre>
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<pre>public static final <a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> DUPLICATES_COUNTER_NAME</pre>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.solr.hadoop.dedup.RetainMostRecentUpdateConflictResolver.DUPLICATES_COUNTER_NAME">Constant Field Values</a></dd></dl>
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<pre>public static final <a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> OUTDATED_COUNTER_NAME</pre>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.solr.hadoop.dedup.RetainMostRecentUpdateConflictResolver.OUTDATED_COUNTER_NAME">Constant Field Values</a></dd></dl>
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<h4>RetainMostRecentUpdateConflictResolver</h4>
<pre>public RetainMostRecentUpdateConflictResolver()</pre>
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<h4>setConf</h4>
<pre>public void setConf(org.apache.hadoop.conf.Configuration conf)</pre>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code>setConf</code> in interface <code>org.apache.hadoop.conf.Configurable</code></dd>
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<h4>getConf</h4>
<pre>public org.apache.hadoop.conf.Configuration getConf()</pre>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code>getConf</code> in interface <code>org.apache.hadoop.conf.Configurable</code></dd>
</dl>
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<a name="getOrderByFieldName()">
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<h4>getOrderByFieldName</h4>
<pre>protected <a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> getOrderByFieldName()</pre>
</li>
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<h4>orderUpdates</h4>
<pre>public <a href="http://download.oracle.com/javase/7/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a><<a href="../../../../../../solr-solrj/org/apache/solr/common/SolrInputDocument.html?is-external=true" title="class or interface in org.apache.solr.common">SolrInputDocument</a>> orderUpdates(org.apache.hadoop.io.Text key,
<a href="http://download.oracle.com/javase/7/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a><<a href="../../../../../../solr-solrj/org/apache/solr/common/SolrInputDocument.html?is-external=true" title="class or interface in org.apache.solr.common">SolrInputDocument</a>> updates,
org.apache.hadoop.mapreduce.Reducer.Context ctx)</pre>
<div class="block"><strong>Description copied from interface: <code><a href="../../../../../org/apache/solr/hadoop/dedup/UpdateConflictResolver.html#orderUpdates(org.apache.hadoop.io.Text,%20java.util.Iterator,%20org.apache.hadoop.mapreduce.Reducer.Context)">UpdateConflictResolver</a></code></strong></div>
<div class="block">Given a list of all colliding document updates for the same unique document
key, this method returns zero or more documents in an application specific
order.
The caller will then apply the updates for this key to Solr in the order
returned by the orderUpdate() method.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../org/apache/solr/hadoop/dedup/UpdateConflictResolver.html#orderUpdates(org.apache.hadoop.io.Text,%20java.util.Iterator,%20org.apache.hadoop.mapreduce.Reducer.Context)">orderUpdates</a></code> in interface <code><a href="../../../../../org/apache/solr/hadoop/dedup/UpdateConflictResolver.html" title="interface in org.apache.solr.hadoop.dedup">UpdateConflictResolver</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>key</code> - the document key common to all collidingUpdates mentioned below</dd><dd><code>updates</code> - all updates in the MapReduce job that have a key equal to
<code>uniqueKey</code> mentioned above. The input order is unspecified.</dd><dd><code>ctx</code> - The <code>Context</code> passed from the <code>Reducer</code>
implementations.</dd>
<dt><span class="strong">Returns:</span></dt><dd>the order in which the updates shall be applied to Solr</dd></dl>
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<a name="getMaximum(java.util.Iterator, java.lang.String, java.util.Comparator, org.apache.hadoop.mapreduce.Reducer.Context)">
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<h4>getMaximum</h4>
<pre>protected <a href="http://download.oracle.com/javase/7/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a><<a href="../../../../../../solr-solrj/org/apache/solr/common/SolrInputDocument.html?is-external=true" title="class or interface in org.apache.solr.common">SolrInputDocument</a>> getMaximum(<a href="http://download.oracle.com/javase/7/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a><<a href="../../../../../../solr-solrj/org/apache/solr/common/SolrInputDocument.html?is-external=true" title="class or interface in org.apache.solr.common">SolrInputDocument</a>> updates,
<a href="http://download.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> fieldName,
<a href="http://download.oracle.com/javase/7/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</a> child,
org.apache.hadoop.mapreduce.Reducer.Context context)</pre>
<div class="block">Returns the most recent document among the colliding updates</div>
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