MergeState
constructor(docMaps: Array<MergeState.DocMap>, segmentInfo: SegmentInfo, mergeFieldInfos: FieldInfos, storedFieldsReaders: Array<StoredFieldsReader?>, termVectorsReaders: Array<TermVectorsReader?>, normsProducers: Array<NormsProducer?>, docValuesProducers: Array<DocValuesProducer?>, fieldInfos: Array<FieldInfos?>, liveDocs: Array<Bits?>, fieldsProducers: Array<FieldsProducer?>, pointsReaders: Array<PointsReader?>, knnVectorsReaders: Array<KnnVectorsReader?>, maxDocs: IntArray, infoStream: InfoStream, intraMergeTaskExecutor: Executor?, needsIndexSort: Boolean)
Create a new merge instance.