I wouldn’t use ExternalFileField if your use-case is served by in-place updates. See
https://lucene.apache.org/solr/guide/8_1/updating-parts-of-documents.html#in-place-updates EFFs were put in in order to have _some_ capability to change individual fields in a doc long before in-place updates were around and long before SolrCloud. Using EFF in any kind of sharded system will cause you significant heartburn in terms of keeping the file up to date on all replicas. Best, Erick > On Sep 1, 2020, at 11:21 AM, matthew sporleder <msporle...@gmail.com> wrote: > > We are researching the canonical use case for external fields -- > traffic-based rankings > > What are the practical limits on the size of the external field file? > A k=v text file seems like it might fall over if it grows into the GB > range? > > Our other thought is to use rolling cores where we stream in web logs > and use !join queries. > > Does anyone have practical experience with this that they might want to share? > > Thanks, > Matt
