Package org.apache.lucene.index

Class BalancedSegmentMergePolicy

  • All Implemented Interfaces:
    Closeable, AutoCloseable
    @Deprecated
public class BalancedSegmentMergePolicy
extends org.apache.lucene.index.LogByteSizeMergePolicy
    Deprecated.
    This class is removed in 4.0; use TieredMergePolicy instead.
    Merge policy that tries to balance not doing large segment merges with not accumulating too many segments in the index, to provide for better performance in near real-time setting.

    This is based on code from zoie, described in more detail at http://code.google.com/p/zoie/wiki/ZoieMergePolicy.

    WARNING: there is a known bug in this merge policy that causes it to run forever, merging the same single segment over and over. If you use SerialMergeScheduler this can cause an index thread to hang forever merging. See LUCENE-4269 for details.

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      static class  BalancedSegmentMergePolicy.MergePolicyParams
      Deprecated.
      Specifies configuration parameters for BalancedSegmentMergePolicy.

      • Nested classes/interfaces inherited from class org.apache.lucene.index.MergePolicy

        org.apache.lucene.index.MergePolicy.MergeAbortedException, org.apache.lucene.index.MergePolicy.MergeException, org.apache.lucene.index.MergePolicy.MergeSpecification, org.apache.lucene.index.MergePolicy.OneMerge

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static int DEFAULT_NUM_LARGE_SEGMENTS
      Deprecated.
       

      • Fields inherited from class org.apache.lucene.index.LogByteSizeMergePolicy

        DEFAULT_MAX_MERGE_MB, DEFAULT_MAX_MERGE_MB_FOR_FORCED_MERGE, DEFAULT_MIN_MERGE_MB

      • Fields inherited from class org.apache.lucene.index.LogMergePolicy

        calibrateSizeByDeletes, DEFAULT_MAX_MERGE_DOCS, DEFAULT_MERGE_FACTOR, DEFAULT_NO_CFS_RATIO, LEVEL_LOG_SPAN, maxMergeDocs, maxMergeSize, maxMergeSizeForForcedMerge, mergeFactor, minMergeSize, noCFSRatio, useCompoundFile

      • Fields inherited from class org.apache.lucene.index.MergePolicy

        writer

    • Method Summary

      All Methods Instance Methods Concrete Methods Deprecated Methods 
      Modifier and Type Method Description
      org.apache.lucene.index.MergePolicy.MergeSpecification findForcedDeletesMerges​(org.apache.lucene.index.SegmentInfos infos)
      Deprecated.
       
      org.apache.lucene.index.MergePolicy.MergeSpecification findForcedMerges​(org.apache.lucene.index.SegmentInfos infos, int maxNumSegments, Map<org.apache.lucene.index.SegmentInfo,​Boolean> segmentsToMerge)
      Deprecated.
       
      org.apache.lucene.index.MergePolicy.MergeSpecification findMerges​(org.apache.lucene.index.SegmentInfos infos)
      Deprecated.
       
      int getMaxSmallSegments()
      Deprecated.
       
      int getNumLargeSegments()
      Deprecated.
       
      boolean getPartialExpunge()
      Deprecated.
       
      void setMaxSmallSegments​(int maxSmallSegments)
      Deprecated.
       
      void setMergeFactor​(int mergeFactor)
      Deprecated.
       
      void setMergePolicyParams​(BalancedSegmentMergePolicy.MergePolicyParams params)
      Deprecated.
       
      void setNumLargeSegments​(int numLargeSegments)
      Deprecated.
       
      void setPartialExpunge​(boolean doPartialExpunge)
      Deprecated.
       
      protected long size​(org.apache.lucene.index.SegmentInfo info)
      Deprecated.
       

      • Methods inherited from class org.apache.lucene.index.LogByteSizeMergePolicy

        getMaxMergeMB, getMaxMergeMBForForcedMerge, getMaxMergeMBForOptimize, getMinMergeMB, setMaxMergeMB, setMaxMergeMBForForcedMerge, setMaxMergeMBForOptimize, setMinMergeMB

      • Methods inherited from class org.apache.lucene.index.LogMergePolicy

        close, getCalibrateSizeByDeletes, getMaxMergeDocs, getMergeFactor, getNoCFSRatio, getUseCompoundFile, isMerged, isMerged, message, setCalibrateSizeByDeletes, setMaxMergeDocs, setNoCFSRatio, setUseCompoundFile, sizeBytes, sizeDocs, toString, useCompoundFile, verbose

      • Methods inherited from class org.apache.lucene.index.MergePolicy

        setIndexWriter

    • Field Detail

      • DEFAULT_NUM_LARGE_SEGMENTS

        public static final int DEFAULT_NUM_LARGE_SEGMENTS
        Deprecated.
        See Also:
        Constant Field Values

    • Constructor Detail

      • BalancedSegmentMergePolicy

        public BalancedSegmentMergePolicy()
        Deprecated.

    • Method Detail

      • size

        protected long size​(org.apache.lucene.index.SegmentInfo info)
             throws IOException
        Deprecated.
        Overrides:
        size in class org.apache.lucene.index.LogByteSizeMergePolicy
        Throws:
        IOException

      • setPartialExpunge

        public void setPartialExpunge​(boolean doPartialExpunge)
        Deprecated.

      • getPartialExpunge

        public boolean getPartialExpunge()
        Deprecated.

      • setNumLargeSegments

        public void setNumLargeSegments​(int numLargeSegments)
        Deprecated.

      • getNumLargeSegments

        public int getNumLargeSegments()
        Deprecated.

      • setMaxSmallSegments

        public void setMaxSmallSegments​(int maxSmallSegments)
        Deprecated.

      • getMaxSmallSegments

        public int getMaxSmallSegments()
        Deprecated.

      • setMergeFactor

        public void setMergeFactor​(int mergeFactor)
        Deprecated.
        Overrides:
        setMergeFactor in class org.apache.lucene.index.LogMergePolicy

      • findForcedMerges

        public org.apache.lucene.index.MergePolicy.MergeSpecification findForcedMerges​(org.apache.lucene.index.SegmentInfos infos,
                                                                               int maxNumSegments,
                                                                               Map<org.apache.lucene.index.SegmentInfo,​Boolean> segmentsToMerge)
                                                                        throws IOException
        Deprecated.
        Overrides:
        findForcedMerges in class org.apache.lucene.index.LogMergePolicy
        Throws:
        IOException

      • findForcedDeletesMerges

        public org.apache.lucene.index.MergePolicy.MergeSpecification findForcedDeletesMerges​(org.apache.lucene.index.SegmentInfos infos)
                                                                               throws org.apache.lucene.index.CorruptIndexException,
                                                                                      IOException
        Deprecated.
        Overrides:
        findForcedDeletesMerges in class org.apache.lucene.index.LogMergePolicy
        Throws:
        org.apache.lucene.index.CorruptIndexException
        IOException

      • findMerges

        public org.apache.lucene.index.MergePolicy.MergeSpecification findMerges​(org.apache.lucene.index.SegmentInfos infos)
                                                                  throws IOException
        Deprecated.
        Overrides:
        findMerges in class org.apache.lucene.index.LogMergePolicy
        Throws:
        IOException