Lucene has never really supported this migration path. There’s a whole long
discussion of why, but basically you can’t upgrade an index with 100% fidelity
because the original information isn’t there. Here’s the most succinct
definition I’ve seen (from Robert Muir):
"I think the key issue here
Hi All,
We are presently using solr 5.3.0 and planning to migrate to version 8.4.1 .I
tried using index upgrader for the same .
I am able to upgrade 5.3.0->6.6.6 and 6.6.6 to 7.7.3.But when I try upgrading
7.7.3 index to 8.4.1,I keep getting following error :
This index was initially create
