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| <article class="content wrap" id="_content" data-uid="Lucene.Net.Index.MultiPassIndexSplitter"> |
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| <h1 id="Lucene_Net_Index_MultiPassIndexSplitter" data-uid="Lucene.Net.Index.MultiPassIndexSplitter" class="text-break">Class MultiPassIndexSplitter |
| </h1> |
| <div class="markdown level0 summary"><p>This tool splits input index into multiple equal parts. The method employed |
| here uses <a class="xref" href="https://lucenenet.apache.org/docs/4.8.0-beta00013/api/core/Lucene.Net.Index.IndexWriter.html#Lucene_Net_Index_IndexWriter_AddIndexes_Lucene_Net_Index_IndexReader___">AddIndexes(IndexReader[])</a> where the input data |
| comes from the input index with artificially applied deletes to the document |
| id-s that fall outside the selected partition. |
| <p>Note 1: Deletes are only applied to a buffered list of deleted docs and |
| don't affect the source index - this tool works also with read-only indexes. |
| </p> |
| <p>Note 2: the disadvantage of this tool is that source index needs to be |
| read as many times as there are parts to be created, hence the name of this |
| tool.</p> |
| <p> |
| <p><strong>NOTE</strong>: this tool is unaware of documents added |
| atomically via <a class="xref" href="https://lucenenet.apache.org/docs/4.8.0-beta00013/api/core/Lucene.Net.Index.IndexWriter.html#Lucene_Net_Index_IndexWriter_AddDocuments_System_Collections_Generic_IEnumerable_System_Collections_Generic_IEnumerable_Lucene_Net_Index_IIndexableField___Lucene_Net_Analysis_Analyzer_">AddDocuments(IEnumerable<IEnumerable<IIndexableField>>, Analyzer)</a> or |
| <a class="xref" href="https://lucenenet.apache.org/docs/4.8.0-beta00013/api/core/Lucene.Net.Index.IndexWriter.html#Lucene_Net_Index_IndexWriter_UpdateDocuments_Lucene_Net_Index_Term_System_Collections_Generic_IEnumerable_System_Collections_Generic_IEnumerable_Lucene_Net_Index_IIndexableField___Lucene_Net_Analysis_Analyzer_">UpdateDocuments(Term, IEnumerable<IEnumerable<IIndexableField>>, Analyzer)</a>, which means it can easily |
| break up such document groups. |
| </p></p> |
| </div> |
| <div class="markdown level0 conceptual"></div> |
| <div class="inheritance"> |
| <h5>Inheritance</h5> |
| <div class="level0"><span class="xref">System.Object</span></div> |
| <div class="level1"><span class="xref">MultiPassIndexSplitter</span></div> |
| </div> |
| <div class="inheritedMembers"> |
| <h5>Inherited Members</h5> |
| <div> |
| <span class="xref">System.Object.Equals(System.Object)</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.Equals(System.Object, System.Object)</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.GetHashCode()</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.GetType()</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.MemberwiseClone()</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span> |
| </div> |
| <div> |
| <span class="xref">System.Object.ToString()</span> |
| </div> |
| </div> |
| <h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.Index.html">Lucene.Net.Index</a></h6> |
| <h6><strong>Assembly</strong>: Lucene.Net.Misc.dll</h6> |
| <h5 id="Lucene_Net_Index_MultiPassIndexSplitter_syntax">Syntax</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public class MultiPassIndexSplitter</code></pre> |
| </div> |
| <h3 id="methods">Methods |
| </h3> |
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| <span class="small pull-right mobile-hide"> |
| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net.Misc/Index/MultiPassIndexSplitter.cs/#L123">View Source</a> |
| </span> |
| <a id="Lucene_Net_Index_MultiPassIndexSplitter_Main_" data-uid="Lucene.Net.Index.MultiPassIndexSplitter.Main*"></a> |
| <h4 id="Lucene_Net_Index_MultiPassIndexSplitter_Main_System_String___" data-uid="Lucene.Net.Index.MultiPassIndexSplitter.Main(System.String[])">Main(String[])</h4> |
| <div class="markdown level1 summary"></div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public static void Main(string[] args)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.String</span>[]</td> |
| <td><span class="parametername">args</span></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <span class="small pull-right mobile-hide"> |
| <span class="divider">|</span> |
| <a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Index_MultiPassIndexSplitter_Split_Lucene_Net_Util_LuceneVersion_Lucene_Net_Index_IndexReader_Lucene_Net_Store_Directory___System_Boolean_.md&value=---%0Auid%3A%20Lucene.Net.Index.MultiPassIndexSplitter.Split(Lucene.Net.Util.LuceneVersion%2CLucene.Net.Index.IndexReader%2CLucene.Net.Store.Directory%5B%5D%2CSystem.Boolean)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a> |
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| <a href="https://github.com/NightOwl888/lucenenet/blob/fix/apidocs-layout/src/Lucene.Net.Misc/Index/MultiPassIndexSplitter.cs/#L63">View Source</a> |
| </span> |
| <a id="Lucene_Net_Index_MultiPassIndexSplitter_Split_" data-uid="Lucene.Net.Index.MultiPassIndexSplitter.Split*"></a> |
| <h4 id="Lucene_Net_Index_MultiPassIndexSplitter_Split_Lucene_Net_Util_LuceneVersion_Lucene_Net_Index_IndexReader_Lucene_Net_Store_Directory___System_Boolean_" data-uid="Lucene.Net.Index.MultiPassIndexSplitter.Split(Lucene.Net.Util.LuceneVersion,Lucene.Net.Index.IndexReader,Lucene.Net.Store.Directory[],System.Boolean)">Split(LuceneVersion, IndexReader, Directory[], Boolean)</h4> |
| <div class="markdown level1 summary"><p>Split source index into multiple parts. </p> |
| </div> |
| <div class="markdown level1 conceptual"></div> |
| <h5 class="decalaration">Declaration</h5> |
| <div class="codewrapper"> |
| <pre><code class="lang-csharp hljs">public virtual void Split(LuceneVersion version, IndexReader in, Directory[] outputs, bool seq)</code></pre> |
| </div> |
| <h5 class="parameters">Parameters</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Name</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">Lucene.Net.Util.LuceneVersion</span></td> |
| <td><span class="parametername">version</span></td> |
| <td><p>lucene compatibility version</p> |
| </td> |
| </tr> |
| <tr> |
| <td><span class="xref">Lucene.Net.Index.IndexReader</span></td> |
| <td><span class="parametername">in</span></td> |
| <td><p>source index, can have deletions, can have |
| multiple segments (or multiple readers). </p> |
| </td> |
| </tr> |
| <tr> |
| <td><span class="xref">Lucene.Net.Store.Directory</span>[]</td> |
| <td><span class="parametername">outputs</span></td> |
| <td><p>list of directories where the output parts will be stored. </p> |
| </td> |
| </tr> |
| <tr> |
| <td><span class="xref">System.Boolean</span></td> |
| <td><span class="parametername">seq</span></td> |
| <td><p>if true, then the source index will be split into equal |
| increasing ranges of document id-s. If false, source document id-s will be |
| assigned in a deterministic round-robin fashion to one of the output splits. </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <h5 class="exceptions">Exceptions</h5> |
| <table class="table table-bordered table-striped table-condensed"> |
| <thead> |
| <tr> |
| <th>Type</th> |
| <th>Condition</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td><span class="xref">System.IO.IOException</span></td> |
| <td><p>If there is a low-level I/O error </p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </article> |
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