uschindler commented on pull request #173: URL: https://github.com/apache/lucene/pull/173#issuecomment-859613146
> Is the plan to work on this and #177 in parallel until we know which is the more sustainable option, or abandon this one altogether with expectations that JDK 17 will be better? I'm going to go through the pain of setting one up but probably cannot do both. I won't expect any of both to be in a stable release of Lucene yet. The version for 16 (this one) is here for reference only. It has performance problems, because JDK 16 was not able to optimize loops with 64 bit. With JDK 17, this should be better, but I wasn't able to test this with #177. So I'd recommend to do performance tests with #177. Hopefully at some point this will land in JDK so we can officially use it. The problem is currently, every major release changes API in significant ways, so there is no way to include it in official builds. It also won't work without command line settings, so if you'd like to use with software like Solr or Elasticsearch, you would need to change startup scripts, too. MR-JARs don't help, because MR-JARs resolve class files based on minimal version and you can't make it "only use this class for JDK 16". A plan might be (as this is quite isolated) to create a separate github project, with just the directory implementation, so it can be downloaded as separate JAR file and included into projects. Possibly with a DirectoryFactory for Solr or similar plugin for Elasticsearch. My time is a bit limited at moment, but that's obviously the best way to go. The setup as draft pull request with hacked code inside Lucene was mainly done to run all Lucene tests easily against it and compare performance with old MMapDirectory. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
