MB-29029: Wait for leader_activity cleanup.

Change-Id: I644f3f16513ab63e57c493a311866c78cbecaf88
Reviewed-on: http://review.couchbase.org/92441
Tested-by: Abhijeeth Nuthan <[email protected]>
Well-Formed: Build Bot <[email protected]>
Reviewed-by: Dave Finlay <[email protected]>

Author: anuthan

src/ns_orchestrator.erl

@@ -742,6 +742,10 @@ janitor_running(Msg, From, #janitor_state{cleanup_id=ID}) when ID =/= undefined
         {cleanup_done, _, _} ->
             ok
     end,
+    %% Temporary hack to fix MB-29029.
+    %% Wait till leader_activities has a chance to cleanup activities related
+    %% to janitor processes.
+    timer:sleep(500),
     idle(Msg, From, #idle_state{}).
 
 %% Asynchronous rebalancing events