Method FindForcedMerges

FindForcedMerges(SegmentInfos, Int32, IDictionary<SegmentCommitInfo, Nullable<Boolean>>)

Determine what set of merge operations is necessary in order to merge to <= the specified segment count. IndexWriter calls this when its ForceMerge(Int32, Boolean) method is called. This call is always synchronized on the IndexWriter instance so only one thread at a time will call this method.

Declaration
public abstract MergePolicy.MergeSpecification FindForcedMerges(SegmentInfos segmentInfos, int maxSegmentCount, IDictionary<SegmentCommitInfo, bool?> segmentsToMerge)
Parameters
Type Name Description
SegmentInfos segmentInfos

The total set of segments in the index

System.Int32 maxSegmentCount

Requested maximum number of segments in the index (currently this is always 1)

IDictionary<SegmentCommitInfo, System.Nullable<System.Boolean>> segmentsToMerge

Contains the specific SegmentInfo instances that must be merged away. This may be a subset of all SegmentInfos. If the value is true for a given SegmentInfo, that means this segment was an original segment present in the to-be-merged index; else, it was a segment produced by a cascaded merge.

Returns
Type Description
MergePolicy.MergeSpecification