Hello, I'm experimenting with Lucene 5.2.1 and I see something I cannot find an easy explanation for in the api docs. Depending on whether I pick BEST_COMPRESSION or BEST_SPEED mode for StoredFieldsFormat almost all files become smaller for BEST_COMPRESSION mode. I expected only .fdt files to be smaller but for some reason the following file types also shrink very significantly: .fdx, .doc, .pos. Term dictionary (.tim) also gets smaller though not as significantly. Weirdly enough .tip becomes a little bigger for the best compressions setting. Index contained about 10M small (~300 bytes each) text docs.
I guess I could go through the code myself to understand this but may be someone can shed some light on this. Thanks! Anton
