Hi Shawn,
unfortunately upgrading from Solr 6.x to 8.x is currently no solution.
I have several extensions and plugins developed like thesaurus for
26 European languages as selectable query extension, query pre- and
post-processing and so on.
Nevertheless, upgrading from Java 8 to OpenJDK 11 has an upgrade
of Solr from 6.x to 8.x at a later time already in mind.
Yes, Solr 6.x is quite old but rock solid and fast. And there were
some complains on this list about degration of search speed with
Solr 8.x. This would be also something which I have to check and
do some testing with measurements.
To get away from the Oracle License by switching from Java 8 to
OpenJDK 8, do you have any observations or measurements?
Thanks for your hints,
Bernd
Am 14.12.21 um 19:30 schrieb Shawn Heisey:
On 12/14/21 8:08 AM, Bernd Fehling wrote:
we are running SolrCloud 6.6 and changing server (hardware).
Now I'm thinking about upgrading from Oracle Java 8 to OpenJDK 11.
Does Solr 6.6 run with OpenJDK 11, are there any known problems?
It probably will not work without at least some changes to the solr or solr.cmd script. Solr 7.0 was the first version to be qualified as
compatible with Java 9, which was still new at the time 7.0 was released. The newer Java versions do things a little differently than Java 8
did, and I would expect Solr 6.x to have problems with anything newer than Java 8.
If you want guaranteed compatibility with Java 11, your best bet is to upgrade to Solr 8.x. The 6.x versions are quite old. I know that such
an upgrade is probably difficult to get approved.
What I would recommend is installing something like OpenJDK 8. One of the replies mentioned Coretto. I have no experience with that, but it
would probably work too.
Thanks,
Shawn
