Hello, We are using SOLR cloud 8.5.
Several times per hour we can see these kind of errors in logs: /RunUpdateProcessor has received an AddUpdateCommand containing a document that appears to still contain Atomic document update operations, most likely because DistributedUpdateProcessorFactory was explicitly disabled from this updateRequestProcessorChain./ As far as I understood this error is related to customized updateRequestProcessorChain. But the main concern is that we are not using those features, we have not defined any new updateRequestProcessorChain. We use the default default-update-request-processor-chain <https://lucene.apache.org/solr/guide/8_5/update-request-processors.html#default-update-request-processor-chain> . I'm not able to reproduce the issue in a test environment, the same update works fine in a test environment. A tipical failing update contains several atomic updates following the structure "field": { "set": "value"} , "field1": { "set": "value1"}, etc.. Do you have any idea of what could be the root cause?, maybe performance issues?, too much load?, any problem with the tlog? Thanks in advance Diego -------------------------- Senior Software Engineer Telefónica Cybersecurity & Cloud Tech -- Sent from: https://lucene.472066.n3.nabble.com/Solr-User-f472068.html