Yes it should be usable. You said you got a "similar" error, can you share it?
Le jeu. 7 sept. 2017 à 04:53, 袖宏治 <sode3...@gmail.com> a écrit : > Hello, it is sode. > I created an index in lucene 6.1. I want to use the index created in lucene > 6.1 with lucene 6.6. > In lucene 6.6 I looked up index in lucene 6.1. The following Error has > occurred. > Could not load codec 'Lucene 60'. Did you forget to add lucene - backward - > codecs.jar? > I put lucene-backward-codecs.jar in library Path, but it got similarly > Error. > Is the index of lucene 6.1 unusable in lucene 6.6? >
