SERVER-36461 Add 'transaction' identifier to slow transaction log output

(cherry picked from commit 4b6a5591cf912f6cadaf2f1ede5d58ad2bb694c6)

1 files changed, 2 insertions, 1 deletions

diff --git a/src/mongo/db/session.cpp b/src/mongo/db/session.cpp
index 8c2b7c51805..db7981d4671 100644
--- a/src/mongo/db/session.cpp
+++ b/src/mongo/db/session.cpp
@@ -1234,7 +1234,8 @@ void Session::_logSlowTransaction(WithLock wl,
         // Log the transaction if its duration is longer than the slowMS command threshold.
         if (_singleTransactionStats->getDuration(curTimeMicros64()) >
             serverGlobalParams.slowMS * 1000ULL) {
-            log(logger::LogComponent::kCommand)
+            log(logger::LogComponent::kTransaction)
+                << "transaction "
                 << _transactionInfoForLog(lockStats, terminationCause, readConcernArgs);
         }
     }