Luis Cappa Banda skrev:
Do you know if SolrCloud replica shards have 100% the same data as the
leader ones every time? Probably wen synchronizing with leaders there
exists a delay, so executing queries to replicas won't be a good idea.
As long as the replica is in state "active" it will be 100% up to date
with leader - updates goes to leader, but it dispatches simular request
to replica and does not respond (positively) to your update-request
before it has successfully received positive answers from replica (and
of course also locally stored the update successfully). If replica is in
state "recovering" or "down" or somthing it is (potentially) not up to
date with leader.
Remember that even though updates are made on both leader and replica
synchronously it might not be available for (non-real-time) search on
leader and replica at exactly the same time, if you do not also make
sure to commit as part of you update. If you update alot you probably do
not want to commit every time. If you use (soft) auto-commit on the
leader and replica it will be possible that leader and replica does not
respond equally to the same request at the same time - but the leader
can just as well as the replica be the one that is "behind". If you use
low values for (soft) auto-commit in practice leader and replica will
have the same documents available for search at any time.
Thank you very much in advance.
Best regards,
