Commit (hard) at shutdown?

[Per Steffensen]

Hi

Solr 5.1.
Someone in production in my organization claims that even though Solrs 
are shut down gracefully, there can be huge tlogs to replay when 
starting Solrs again. We are doing heavy indexing right up until Solrs 
are shut down, and we have <autoCommit> set to 1 min. Can anyone confirm 
(or the opposite) that Solrs, upon graceful shutdown, OUGHT TO do a 
(hard) commit, leaving tlogs empty (= nothing to replay when starting 
again)?

Regards, Per Steffensen