Simple question: Does broker send the list of segments to be queried to Server along with the query? I think not but want to double check.

Yes, it does

In all the cases or only few cases?

all

oh ok. thanks for confirming.

server query is the wrapper of broker query + a list of segments to query

Thanks, Xiang

To add, broker may also prune out segments (not to be processed by any server), if the data is partitioned, and the query is for a partition.

Does broker also prune based on segment’s metadata?

Only partition metadata