Short form: As docs are updated, they're marked as deleted until the segment is merged. This affects things like term frequency and doc frequency which in turn influences the score.
Due to how commits happen, i.e. autocommit will hit at slightly skewed wall-clock time, different segments are merged on different replicas of the same shard. Thus the scores can be slightly different You can turn on distributed stats which will help with this: https://issues.apache.org/jira/browse/SOLR-1632 Best, Erick On Thu, Jun 7, 2018 at 12:07 PM, Wei <[email protected]> wrote: > Hi, > > Recently we have an observation that really puzzled us. We have two > instances of Solr, one in stand alone mode and one is a single-shard solr > cloud with a couple of replicas. Both are indexed with the same documents > and have same solr version 6.6.2. When issue the same query, the solr > score from stand alone and cloud are different. How could this happen? > With the same data, software version and query, should solr score be > exactly same regardless of cloud mode or not? > > Thanks, > Wei
