Package org.apache.lucene.index

Class IndexWriter.IndexReaderWarmer

  • Direct Known Subclasses:
    SimpleMergedSegmentWarmer
    Enclosing class:
    IndexWriter
    public abstract static class IndexWriter.IndexReaderWarmer
extends java.lang.Object
    If DirectoryReader.open(IndexWriter,boolean) has been called (ie, this writer is in near real-time mode), then after a merge completes, this class can be invoked to warm the reader on the newly merged segment, before the merge commits. This is not required for near real-time search, but will reduce search latency on opening a new near real-time reader after a merge completes.

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      abstract void warm​(AtomicReader reader)
      Invoked on the AtomicReader for the newly merged segment, before that segment is made visible to near-real-time readers.

      • Methods inherited from class java.lang.Object

        equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Method Detail

      • warm

        public abstract void warm​(AtomicReader reader)
                   throws java.io.IOException
        Invoked on the AtomicReader for the newly merged segment, before that segment is made visible to near-real-time readers.
        Throws:
        java.io.IOException