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-rw-r--r--synapse/storage/_base.py20
1 files changed, 12 insertions, 8 deletions
diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py
index a6a0e6ec9f..08dffd774f 100644
--- a/synapse/storage/_base.py
+++ b/synapse/storage/_base.py
@@ -311,6 +311,12 @@ class SQLBaseStore(object):
         after_callbacks = []
         exception_callbacks = []
 
+        if LoggingContext.current_context() == LoggingContext.sentinel:
+            logger.warn(
+                "Starting db txn '%s' from sentinel context",
+                desc,
+            )
+
         try:
             result = yield self.runWithConnection(
                 self._new_transaction,
@@ -343,10 +349,9 @@ class SQLBaseStore(object):
         """
         parent_context = LoggingContext.current_context()
         if parent_context == LoggingContext.sentinel:
-            # warning disabled for 0.33.0 release; proper fixes will land imminently.
-            # logger.warn(
-            #    "Running db txn from sentinel context: metrics will be lost",
-            # )
+            logger.warn(
+                "Starting db connection from sentinel context: metrics will be lost",
+            )
             parent_context = None
 
         start_time = time.time()
@@ -1145,17 +1150,16 @@ class SQLBaseStore(object):
         defer.returnValue(retval)
 
     def get_user_count_txn(self, txn):
-        """Get a total number of registerd users in the users list.
+        """Get a total number of registered users in the users list.
 
         Args:
             txn : Transaction object
         Returns:
-            defer.Deferred: resolves to int
+            int : number of users
         """
         sql_count = "SELECT COUNT(*) FROM users WHERE is_guest = 0;"
         txn.execute(sql_count)
-        count = txn.fetchone()[0]
-        defer.returnValue(count)
+        return txn.fetchone()[0]
 
     def _simple_search_list(self, table, term, col, retcols,
                             desc="_simple_search_list"):