I need help to clarify how the ES merge scores across different
shards. As I know each shard is a Lucene index instance. Thus each
index has its own tf-idf normalization that is independent from other
shards. So, here is the first question. Are the score depends on how
data distributed across the shards? Second, are the rank of documents
depends on how data distributed across the shards?Third, what is the
algorithm for merging scores across the shards?
Sorry if my questions are vague. Just ask me and I'll clarify the