No more trunk support for 2.9 indexes

[peter . sturge]

Hi,

I'm sure there are good reasons for the decision to no longer support 2.9  
format indexes in 4.0, and not have an automatic upgrade as in previous  
versions.

Since Lucene 3.0.2 is 'out there', does this mean the format is nailed  
down, and some sort of porting is possible?
Does anyone know of a tool that can read the entire contents of a Solr  
index and (re)write it another? (as an indexing operation - eg 2.9 ->  
3.0.x, so not repl)

Thanks,
Peter