Example usage for org.apache.lucene.index LogMergePolicy getMergeFactor

Introduction

In this page you can find the example usage for org.apache.lucene.index LogMergePolicy getMergeFactor.

Prototype

public int getMergeFactor() 

Source Link

Document

Returns the number of segments that are merged at once and also controls the total number of segments allowed to accumulate in the index.

Usage

From source file:org.apache.solr.core.TestMergePolicyConfig.java

License:Apache License

public void testLogMergePolicyConfig() throws Exception {

    final Class<? extends LogMergePolicy> mpClass = random().nextBoolean() ? LogByteSizeMergePolicy.class
            : LogDocMergePolicy.class;

    System.setProperty("solr.test.log.merge.policy", mpClass.getName());

    initCore("solrconfig-logmergepolicy.xml", "schema-minimal.xml");
    IndexWriterConfig iwc = solrConfig.indexConfig.toIndexWriterConfig(h.getCore().getLatestSchema());

    // verify some props set to -1 get lucene internal defaults
    assertEquals(-1, solrConfig.indexConfig.maxBufferedDocs);
    assertEquals(IndexWriterConfig.DISABLE_AUTO_FLUSH, iwc.getMaxBufferedDocs());
    assertEquals(-1, solrConfig.indexConfig.maxIndexingThreads);
    assertEquals(IndexWriterConfig.DEFAULT_MAX_THREAD_STATES, iwc.getMaxThreadStates());
    assertEquals(-1, solrConfig.indexConfig.ramBufferSizeMB, 0.0D);
    assertEquals(IndexWriterConfig.DEFAULT_RAM_BUFFER_SIZE_MB, iwc.getRAMBufferSizeMB(), 0.0D);

    LogMergePolicy logMP = assertAndCast(mpClass, iwc.getMergePolicy());

    // set by legacy <mergeFactor> setting
    assertEquals(11, logMP.getMergeFactor());
    // set by legacy <maxMergeDocs> setting
    assertEquals(456, logMP.getMaxMergeDocs());

}

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