Thanks for the link. We’ll see what the patch provides for additional info. We are aware of the need to reindex for solr 9. We will reindex to a separate instance. Are there performance benefits to using the core upgrade utility when going from 7.7.x to 8.11?
On Tue, May 24, 2022 at 8:44 PM Shawn Heisey <[email protected]> wrote: > On 5/24/2022 5:42 PM, Paul Russell wrote: > > --A: Upgraded SOLR on the exiting servers utilizing the current indexes. > We > > have plans to reindex and flatten the structure but we're not ready for > > that yet. With the release of SOLR 9 we need to get to a supported > version > > now. We had planned on reindexing when we go to SOLR 9 > > With indexes originally built by Solr 7, you will not be able to upgrade > to Solr 9 and use the same indexes. The 7.x version is written into the > indexes and even a forced merge down to one segment with 8.x will not > remove it. You will have to reindex from scratch in either 8.x or 9.x > to be able to use the indexes in 9.x. > > If upgrading from 7.x to 8.x with no other changes was enough to cause > OOME exceptions, then you were probably on the hairy edge of seeing them > in 7.x as well. Have you seen the exception? Do you know what resource > was depleted? It is not ALWAYS memory, despite Memory being in the > exception name. I'd hate to try and chase down a memory issue when what > it's really running out of is processes or file handles. > > Do you know anything about applying patches? If you apply the latest > patch I attached to the following issue, you can find out what caused > the OOME even if it never shows up in solr.log: > > https://issues.apache.org/jira/browse/SOLR-9168 > > You will need at least Java 8u92 to be able to use that patch. > > Thanks, > Shawn > > -- Paul Russell VP Integration/Support Services [image: <!--company-->] <https://www.qflow.com/> *main:* 314.968.9906 *direct:* 314.255.2135 *cell:* 314.258.0864 9317 Manchester Rd. St. Louis, MO 63119 qflow.com <https://www.qflow.com/>
