Issues upgrading from Solr 6.5.1 to Solr 8.6.1

2021-01-18 Thread Kerwin
Hi eveybody, I am migrating from solr 6.5.1 to solr 8.6.1 and am having a couple of issues for which I need your help. There is a significant change in ranking between Solr 6 and 8 search results which I need to fix before using Solr8 in our live environment. I noticed a couple of changes upfront

Re: Solrcloud - Reads on specific nodes

2021-01-18 Thread Shawn Heisey
On 1/17/2021 11:12 PM, Doss wrote: Thanks Michael Gibney , Shawn Heisey for pointing in the right direction. 1. Will there be any performance degrade if we use shards.preference? 2. How about leader election if we decided to use NRT + PULL ? TLOG has the advantage of participating in leader elec

[Solr8.5.2] Sudden increase in cpu usage.

2021-01-18 Thread raj.yadav
Hi Everyone, We are using solr8.5.2 (Solr cloud mode), external zookeeper ensemble (hosted on the separate node) All of a sudden we are seeing sudden spike in CPU but at the same same time neither any heavy indexing is performed nor any sudden increase in request rate. Collection info: Collection

Re: Issues upgrading from Solr 6.5.1 to Solr 8.6.1

2021-01-18 Thread Kerwin
I further checked that BM25Similarity class until solr 7.7 has a null check for norms in the explainTFNorm method but this is removed in Solr 8 onwards. Does omitNorms work in Solr8? Can someone send me what the debug output looks like with omitNorms="true"? Here is my config: On Mon, Jan 18, 202