SERVER-37872 Add targeted jstest for sharded transactions with afterClusterTime

1 files changed, 4 insertions, 1 deletions

diff --git a/src/mongo/s/query/cluster_find.cpp b/src/mongo/s/query/cluster_find.cpp
index d26dc9b039a..371f4462be2 100644
--- a/src/mongo/s/query/cluster_find.cpp
+++ b/src/mongo/s/query/cluster_find.cpp
@@ -462,8 +462,11 @@ CursorId ClusterFind::runQuery(OperationContext* opCtx,
 
             if (auto txnRouter = TransactionRouter::get(opCtx)) {
                 // A transaction can always continue on a stale version error during find because
-                // the operation must be idempotent.
+                // the operation must be idempotent. Reset the default global read timestamp so the
+                // retry's routing table reflects the chunk placement after the refresh (no-op if
+                // the transaction is not running with snapshot read concern).
                 txnRouter->onStaleShardOrDbError(kFindCmdName, ex.toStatus());
+                txnRouter->setDefaultAtClusterTime(opCtx);
             }
         }
     }