Undocumented nessesary of lucene-backward-codecs.jar in 1.31.3? about para HOT 9 CLOSED

Download Lucense 8 from https://lucene.apache.org/core/downloads.html
and copy or move core jar and backward-codecs jar to lib directory as well as other plugins.

from para.

Rebuilding the index should also fix this - POST /v1/_reindex http://paraio.org/docs/#053-api-reindex

from para.

@weisjohn @katatunix Hm, I thought a full reindex would be enough... anyway I added backward-codecs to the para-search-lucene project to make such migrations easier. Erudika/para-search-lucene@06e035b

from para.

A full reindex is required when migrating between major Lucene versions. In your case the index file is version 7 and Para 1.31.3 uses Lucene 8.

from para.

Sorry but how to fix this problem (I'm new to Para and Lucene)?

from para.

The solution of @albogdano works, but notice that in my case I have to also delete the xxx-lucene folders in the data folder of para.

from para.

@katatunix thanks for that fix; I had to do the same thing.

@albogdano I did indeed try to do the reindexing first, which successfully completed, however, I still had no data until I removed both para-lucene and scoold-lucene and then reindexed again.

from para.

@albogdano Could you update this dependency para-search-lucene in para-jar/para-war pom.xml to the latest version?

from para.

@rafik777 yes, just pushed those to master now

from para.