Re: [infinispan-dev] Lucene 5 is coming: pitfalls to consider

A wrap up on this subject. Infinispan 8 is now based on Lucene 5.3 and all problems I previously listed are dealt with in a mostly-backwards compatible way; this is what you need to know. ## Null Markers One exception is null-marker tokens: when applied to a NumericField they now shall be represented by a number of the matching type of the field.. no big deal. ## Sorting The bigger issue was sorting, and its need for appropriate metadata, so that we'd know at indexing time which fields would potentially be the target for a sorting query. Our solution in Hibernate Search 5.5 is to provide a @SortableField annotation to allow users (and integrators like Infinispan Remote Query) to mark fields for this purpose, but also we're falling back to a slower sorting strategy in case at runtime a Query is run targeting wich a field which was not appropriately annotated. But while you might think "great, I don't have any change to do", especially if you don't need the extra performance boost that @SortableField would provide, make sure to start migrating infrastructure to use this annotation as the fallback strategy won't be maintained forever! With the next version we'll - by default - refuse to use the fallback and get a runtime exception, but still provide a configuration option to allow it. That would be a great time to make sure all your needs are covered by the new alternative metadata. After that we will get rid of the fallback strategy. Gunnar is going to publish a blog post with more details next week on the Hibernate blog: http://in.relation.to/ , please watch that space. ## Index encoding Hibernate Search is including the backwards compatible codecs. Infinispan could decide to include them too, if you prefer. ## Dynamic Analyzer choices We managed to keep this feature even if Lucene doesn't allow it, we'll probably deprecate this like with sorting but I guess this doesn't require any upfront work from Infinispan. Thanks, Sanne _______________________________________________ infinispan-dev mailing list infinispan-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/infinispan-dev