Hi Sandra, You can't upgrade more than one major Solr version. Solr 9 will refuse to work with a core that has ever been touched by Solr 7.
My advice for any upgrade is to set up the new version from scratch and rebuild your index from the authoritative data source. Thomas Op di 16 jan 2024 om 18:37 schreef Sandra Paganini Fajardo < spagani...@gmail.com>: > Hi,my name is Sandra. I am from Uruguay. > I have a three server cluster Solr 7.7 with Apache Zookeeper 3.5.5. > I want to upgrade both. > > Solr 7.7 --> 8.11 --> 9.4.0 > Apache Zookeeper 3.5.5 t-- > 3.6.5 --> 3.9 > > My questions are: > - Can SolrCloud 8.11 works with Apache Zookeeper v3.9? > - Which of both i have to upgrade first? > > tks sandra >
