On 10/12/22 05:54, Vincenzo D'Amore wrote:
Does anyone know what's the responsibility of DistributedUpdateProcessorFactory?
That update processor takes care of atomic update functionality and farming out update requests to other Solr nodes, in particular for SolrCloud. It probably has some other functionalities, but I haven't looked at its code recently.
Today I realized that in SolrCloud when disabling the schemaless mode, we are going to disable also: - LogUpdateProcessorFactory, - DistributedUpdateProcessorFactory, - RunUpdateProcessorFactory
The LogUpdate processor logs the request, usually that goes to solr.log. The RunUpdate processor actually does the update. I believe that if any of those 3 processors are removed from a definition, they are still automatically performed by Solr. It is better to leave them in the definition so that anyone looking at it knows exactly what is being done and doesn't need to know about Solr's internal implicit handling. If you are entirely removing all processor chains, then don't worry about it. Solr will handle things correctly.
Those processors don't seem to be related to the schemaless mode, in particular DistributedUpdateProcessorFactory.
You are correct, they are not related to schemaless mode, but they are important.
Thanks, Shawn
