public CommitStats(SegmentInfos segmentInfos) {
// clone the map to protect against concurrent changes
userData =
MapBuilder.<String, String>newMapBuilder()
.putAll(segmentInfos.getUserData())
.immutableMap();
// lucene calls the current generation, last generation.
generation = segmentInfos.getLastGeneration();
if (segmentInfos.getId() != null) { // id is only written starting with Lucene 5.0
id = Base64.encodeBytes(segmentInfos.getId());
}
numDocs = Lucene.getNumDocs(segmentInfos);
}
