Interestingly, yesterday at the Search "Bird of Feather' @ Community Over Code, Bratislava I brought this up too. All of us present in the room had the same opinion about the page that at this point it only creates confusion and we should remove it. For folks using older Solr versions, this might still make sense but they'd be looking at an older version of the ref guide anyways.
On Tue, Jun 4, 2024 at 1:13 AM Jan Høydahl <jan....@cominvent.com> wrote: > I used it back in the days when you could migrate from v3->4->5->6. It > solved > the issue that Solr 6 could only read a Lucene 6 or Lucene 5 index, but > after the > sequence of upgrades you'd get there. I even wrote a wrapper to automate > it all at > https://github.com/cominvent/solr-tools/tree/master/upgradeindex > > However, now that Lucene 9 refuses to work with any index created before > Lucene 8, > I agree with Jason that I cannot see any utility for the upgrade tool > anymore. Since, > if you have a Solr 6 index, it won't work in Solr 9 even if you used the > upgrader. > And if you already have a Lucene 8 index, no need to upgrade by hand, just > start > Solr 9 on top of the Lucene 8 index and it will be upgraded. > > +1 to remove mention from ref-guide. > > PS: If the upgrader tool was able to patch the original-index-version from > the binary > index (and user understands the risks), then there could be some utility. > But I'm not > aware of such an option. > > Jan > > > 3. juni 2024 kl. 21:20 skrev Gus Heck <gus.h...@gmail.com>: > > > > I've fielded many questions on this from clients. Folks who have managed > > databases expect to be able to upgrade the data serially across versions > > and such, so these questions come up alot with organizations early in > their > > journey with search. Essentially, I tell them that it's a stop gap tool > for > > use if there's a serious security issue and you really need to move up > one > > version to get away from the security issue, but otherwise the correct > > procedure is to re-index. (And this is sometimes when I find out if > they've > > really planned for reindexing or not). A down-side of the existence of > this > > tool is that its presence in the ref guide allows people to prolong the > > period where they confuse managing a search index with managing a > database. > > That said, I think it may have a place to help folks who got going > without > > knowing enough about search engines to extend the period they have to dig > > themselves out of bad situations (by allowing an upgrade while they > figure > > out how they are going to handle re-indexing more data than they > previously > > planned on indexing all at once). So far every one of my clients has > taken > > my advice and simply re-indexed (though not always without grumbling!), > so > > I have to admit I've not actually seen it used, but in theory it makes > some > > sense. > > > > -Gus > > > > On Mon, Jun 3, 2024 at 2:20 PM David Smiley <dsmi...@apache.org> wrote: > > > >> FWIW, in my experience I've never run this tool (nor colleagues) at > >> any stage in my career that I can remember. For one reason, all the > >> systems could re-index if they needed to. > >> It may be best to remove this information, as it could introduce more > >> confusion than it helps. > >> > >> On Mon, Jun 3, 2024 at 1:34 PM Jason Gerlowski <gerlowsk...@gmail.com> > >> wrote: > >>> > >>> Hey all, > >>> > >>> I was poking around the ref-guide a bit recently and noticed our page > >>> on the "IndexUpgraderTool" that Lucene produces. [1] > >>> > >>> AFAICT, the page doesn't hint at when/why a user might want to use the > >>> IndexUpgraderTool. Maybe at one point the tool might've been > >>> preferred to loading the index in an upgraded Solr version, but I > >>> haven't heard of anyone doing that in the last few years. > >>> > >>> Is this something we expect users to still do? If so, for what > >>> usecase? And if not - should we drop it from the ref-guide - it seems > >>> like it might confuse folks since it's not actually needed to upgrade > >>> Solr versions... > >>> > >>> Best, > >>> > >>> Jason > >>> > >>> [1] > >> > https://solr.apache.org/guide/solr/latest/deployment-guide/indexupgrader-tool.html > >>> > >>> --------------------------------------------------------------------- > >>> To unsubscribe, e-mail: dev-unsubscr...@solr.apache.org > >>> For additional commands, e-mail: dev-h...@solr.apache.org > >>> > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: dev-unsubscr...@solr.apache.org > >> For additional commands, e-mail: dev-h...@solr.apache.org > >> > >> > > > > -- > > http://www.needhamsoftware.com (work) > > https://a.co/d/b2sZLD9 (my fantasy fiction book) > > -- Anshum Gupta
