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    Class LogByteSizeMergePolicy

    This is a LogMergePolicy that measures size of a segment as the total byte size of the segment's files.

    Inheritance
    System.Object
    MergePolicy
    LogMergePolicy
    LogByteSizeMergePolicy
    Implements
    System.IDisposable
    Inherited Members
    LogMergePolicy.LEVEL_LOG_SPAN
    LogMergePolicy.DEFAULT_MERGE_FACTOR
    LogMergePolicy.DEFAULT_MAX_MERGE_DOCS
    LogMergePolicy.DEFAULT_NO_CFS_RATIO
    LogMergePolicy.m_mergeFactor
    LogMergePolicy.m_minMergeSize
    LogMergePolicy.m_maxMergeSize
    LogMergePolicy.m_maxMergeSizeForForcedMerge
    LogMergePolicy.m_maxMergeDocs
    LogMergePolicy.m_calibrateSizeByDeletes
    LogMergePolicy.IsVerbose
    LogMergePolicy.Message(String)
    LogMergePolicy.MergeFactor
    LogMergePolicy.CalibrateSizeByDeletes
    LogMergePolicy.Dispose(Boolean)
    LogMergePolicy.SizeDocs(SegmentCommitInfo)
    LogMergePolicy.SizeBytes(SegmentCommitInfo)
    LogMergePolicy.IsMerged(SegmentInfos, Int32, IDictionary<SegmentCommitInfo, Nullable<Boolean>>)
    LogMergePolicy.FindForcedMerges(SegmentInfos, Int32, IDictionary<SegmentCommitInfo, Nullable<Boolean>>)
    LogMergePolicy.FindForcedDeletesMerges(SegmentInfos)
    LogMergePolicy.FindMerges(MergeTrigger, SegmentInfos)
    LogMergePolicy.MaxMergeDocs
    LogMergePolicy.ToString()
    MergePolicy.DEFAULT_MAX_CFS_SEGMENT_SIZE
    MergePolicy.m_writer
    MergePolicy.m_noCFSRatio
    MergePolicy.m_maxCFSSegmentSize
    MergePolicy.Clone()
    MergePolicy.SetIndexWriter(IndexWriter)
    MergePolicy.Dispose()
    MergePolicy.UseCompoundFile(SegmentInfos, SegmentCommitInfo)
    MergePolicy.IsMerged(SegmentInfos, SegmentCommitInfo)
    MergePolicy.NoCFSRatio
    MergePolicy.MaxCFSSegmentSizeMB
    System.Object.Equals(System.Object)
    System.Object.Equals(System.Object, System.Object)
    System.Object.GetHashCode()
    System.Object.GetType()
    System.Object.MemberwiseClone()
    System.Object.ReferenceEquals(System.Object, System.Object)
    Namespace: Lucene.Net.Index
    Assembly: Lucene.Net.dll
    Syntax
    public class LogByteSizeMergePolicy : LogMergePolicy, IDisposable

    Constructors

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    LogByteSizeMergePolicy()

    Sole constructor, setting all settings to their defaults.

    Declaration
    public LogByteSizeMergePolicy()

    Fields

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    DEFAULT_MAX_MERGE_MB

    Default maximum segment size. A segment of this size or larger will never be merged.

    Declaration
    public static readonly double DEFAULT_MAX_MERGE_MB
    Field Value
    Type Description
    System.Double
    See Also
    MaxMergeMB
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    DEFAULT_MAX_MERGE_MB_FOR_FORCED_MERGE

    Default maximum segment size. A segment of this size or larger will never be merged during ForceMerge(Int32).

    Declaration
    public static readonly double DEFAULT_MAX_MERGE_MB_FOR_FORCED_MERGE
    Field Value
    Type Description
    System.Double
    See Also
    MaxMergeMBForForcedMerge
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    DEFAULT_MIN_MERGE_MB

    Default minimum segment size.

    Declaration
    public static readonly double DEFAULT_MIN_MERGE_MB
    Field Value
    Type Description
    System.Double
    See Also
    MinMergeMB

    Properties

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    MaxMergeMB

    Determines the largest segment (measured by total byte size of the segment's files, in MB) that may be merged with other segments. Small values (e.g., less than 50 MB) are best for interactive indexing, as this limits the length of pauses while indexing to a few seconds. Larger values are best for batched indexing and speedier searches.

    Note that MaxMergeDocs is also used to check whether a segment is too large for merging (it's either or).

    Declaration
    public virtual double MaxMergeMB { get; set; }
    Property Value
    Type Description
    System.Double
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    MaxMergeMBForForcedMerge

    Determines the largest segment (measured by total byte size of the segment's files, in MB) that may be merged with other segments during forceMerge. Setting it low will leave the index with more than 1 segment, even if ForceMerge(Int32) is called.

    Declaration
    public virtual double MaxMergeMBForForcedMerge { get; set; }
    Property Value
    Type Description
    System.Double
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    MinMergeMB

    Sets the minimum size for the lowest level segments. Any segments below this size are considered to be on the same level (even if they vary drastically in size) and will be merged whenever there are mergeFactor of them. This effectively truncates the "long tail" of small segments that would otherwise be created into a single level. If you set this too large, it could greatly increase the merging cost during indexing (if you flush many small segments).

    Declaration
    public virtual double MinMergeMB { get; set; }
    Property Value
    Type Description
    System.Double

    Methods

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    Size(SegmentCommitInfo)

    Declaration
    protected override long Size(SegmentCommitInfo info)
    Parameters
    Type Name Description
    SegmentCommitInfo info
    Returns
    Type Description
    System.Int64
    Overrides
    MergePolicy.Size(SegmentCommitInfo)

    Implements

    System.IDisposable

    Extension Methods

    Number.IsNumber(Object)
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