SERVER-40537 Log error code 261 for TooManyLogicalSessions to the mongodb.log

1 files changed, 9 insertions, 3 deletions

diff --git a/src/mongo/db/logical_session_cache_impl.cpp b/src/mongo/db/logical_session_cache_impl.cpp
index 17b136f566a..61debaf9644 100644
--- a/src/mongo/db/logical_session_cache_impl.cpp
+++ b/src/mongo/db/logical_session_cache_impl.cpp
@@ -369,9 +369,15 @@ LogicalSessionCacheStats LogicalSessionCacheImpl::getStats() {
 
 Status LogicalSessionCacheImpl::_addToCache(WithLock, LogicalSessionRecord record) {
     if (_activeSessions.size() >= size_t(maxSessions)) {
-        return {ErrorCodes::TooManyLogicalSessions,
-                "Unable to add session into the cache because the number of active sessions is too "
-                "high"};
+        Status status = {ErrorCodes::TooManyLogicalSessions,
+                         str::stream()
+                             << "Unable to add session ID " << record.getId()
+                             << " into the cache because the number of active sessions is too "
+                                "high"};
+        auto severity =
+            MONGO_GET_LIMITED_SEVERITY(ErrorCodes::TooManyLogicalSessions, Seconds{1}, 0, 2);
+        LOG(severity) << status.toString();
+        return status;
     }
 
     _activeSessions.insert(std::make_pair(record.getId(), std::move(record)));