Merge pull request #542 from rabbitmq/md/type-os

Fix type mixups of `ra_index()` and `ra_term()`

Author: michaelklishin

src/ra.hrl

@@ -135,7 +135,7 @@
         {term :: ra_term(),
          candidate_id :: ra_server_id(),
          last_log_index :: ra_index(),
-         last_log_term :: ra_index()}).
+         last_log_term :: ra_term()}).
 
 %% Section 4.2
 -record(request_vote_result,
@@ -151,7 +151,7 @@
          token :: reference(),
          candidate_id :: ra_server_id(),
          last_log_index :: ra_index(),
-         last_log_term :: ra_index()}).
+         last_log_term :: ra_term()}).
 
 -record(pre_vote_result,
         {term :: ra_term(),

test/ra_log_memory.erl

@@ -46,7 +46,7 @@
 -record(state, {last_index = 0 :: ra_index(),
                 last_written = {0, 0} :: ra_idxterm(), % only here to fake the async api of the file based one
                 entries = #{0 => {0, undefined}} ::
-                    #{ra_term() => {ra_index(), term()}},
+                    #{ra_index() => {ra_term(), term()}},
                 meta = #{} :: ra_log_memory_meta(),
                 snapshot :: option({ra_snapshot:meta(), term()})}).