: Looking on the infostream I can see that the first merges do succeed but : older segments are kept in reference thus cannot be deleted until all the : merging are done.
I suspect what you are seeing is that filehandles for the older segemnts are kept open (and thus, the bytes on disk for those old segments are not free'd p for use by new segments) because hte existing IndexReaders still need to use them until the completion of the merge process, and new IndexReader/IndexSearcher opening/warming takes place, *and* all execiting requests that used the old IndexSearcher completed. -Hoss
