On Thu, Mar 24, 2016 at 11:45 AM, Yonik Seeley <ysee...@gmail.com> wrote: >> I've been led to understand that 6.X (at least the Lucene part?) won't >> be backwards compatible with 4.X data. 5.5 at least works fine with data >> files from 4.7, for instance.
It really doesn't seem like much changed at the lucene index-format level from 5 to 6... it makes one wonder how much work would be involved in allowing Lucene 6 to directly read a newer 4.x index... maybe it's just down to version strings in the index and not much else? -Yonik