Hi All,
We have a Lucene 3.6-based index set which is quite large and currently in use.
What will be the upgrade path to (a) 4.x or (b) 5.x? With respect to the data
migration, etc. What are the steps and is it technically possible? I read that
3.x to 5.x is not possible, and throws IndexTooStale exceptions. Can we do it
in two hops, like from 3.x to 4.x and 4.x to 5.x.
If I have a set of documents that have already been indexed with Lucene 3.6 and
somehow we are able to upgrade to Lucene 4.x (or maybe 5.x), how can we make
sure that we will get the same set of results? I am not sure, but I will check
the analyzers and tokenizers used in the 3.6 versions. If we could somehow
carry over those to 5.x, will we be guaranteed the same set of results? Or are
there other considerations to get the same set of results? - SRK
