/*
Create a new merge policy instance with default settings for noCFSRatio
and maxCFSSegmentSize. This ctor should be used by subclasses using
different defaults than the MergePolicy.
*/
func newMergePolicyImpl(self MergeSpecifier, defaultNoCFSRatio, defaultMaxCFSSegmentSize float64) *MergePolicyImpl {
ans := &MergePolicyImpl{
self: self,
writer: util.NewSetOnce(),
noCFSRatio: defaultNoCFSRatio,
maxCFSSegmentSize: defaultMaxCFSSegmentSize,
}
ans.Size = func(info *SegmentInfoPerCommit) (n int64, err error) {
byteSize, err := info.SizeInBytes()
if err != nil {
return 0, err
}
docCount := info.info.DocCount()
if docCount <= 0 {
return byteSize, nil
}
delCount := ans.writer.Get().(*IndexWriter).readerPool.numDeletedDocs(info)
delRatio := float32(delCount) / float32(docCount)
assert(delRatio <= 1)
return int64(float32(byteSize) * (1 - delRatio)), nil
}
return ans
}
/*
Creates a new config that with defaults that match the specified
Version as well as the default Analyzer. If matchVersion is >= 3.2,
TieredMergePolicy is used for merging; else LogByteSizeMergePolicy.
Note that TieredMergePolicy is free to select non-contiguous merges,
which means docIDs may not remain monotonic over time. If this is a
problem, you should switch to LogByteSizeMergePolicy or
LogDocMergePolicy.
*/
func NewIndexWriterConfig(matchVersion util.Version, analyzer analysis.Analyzer) *IndexWriterConfig {
return &IndexWriterConfig{
LiveIndexWriterConfigImpl: newLiveIndexWriterConfig(analyzer, matchVersion),
writer: util.NewSetOnce(),
}
}
func (mp *MergePolicyImpl) clone() *MergePolicyImpl {
clone := *mp
clone.writer = util.NewSetOnce()
return &clone
}