I think you need backward-codecs-9.0.0-SNAPSHOT there. It enables 9.0 to read 8.x indexes.
On Wed, May 26, 2021 at 9:27 AM Michael Wechner <michael.wech...@wyona.com> wrote: > > Hi > > I am using Lucene 8.8.2 in production and I am currently doing some > tests using 9.0.0-SNAPSHOT, whereas I have included > lucene-backward-codecs, because in the log files it was asking me > whether I have forgotten to include lucene-backward-codecs.jar > > <dependency> > <groupId>org.apache.lucene</groupId> > <artifactId>lucene-core</artifactId> > <version>9.0.0-SNAPSHOT</version> > </dependency> > <dependency> > <groupId>org.apache.lucene</groupId> > <artifactId>lucene-queryparser</artifactId> > <version>9.0.0-SNAPSHOT</version> > </dependency> > <dependency> > <groupId>org.apache.lucene</groupId> > <artifactId>lucene-backward-codecs</artifactId> > <version>8.8.2</version> > </dependency> > > But when querying index directories created with Lucene 8.8.2, then I > receive the following error > > java.lang.NoClassDefFoundError: Could not initialize class > org.apache.lucene.codecs.Codec$Holder > > I am not sure whether I understand the backwards compatibility page > correctly > > https://cwiki.apache.org/confluence/display/LUCENE/BackwardsCompatibility > > but I guess version 9 will not be backwards compatible to version 8? Or > should I do something different? > > Thanks > > Michael > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
