SERVER-45744 Migration coordinator recovery task should bump the txnNumber on the session used to send _recvChunkStart

 create mode 100644 jstests/sharding/bump_transaction_prevents_extra_deletion_task_write.js

1 files changed, 7 insertions, 0 deletions

diff --git a/src/mongo/db/s/migration_chunk_cloner_source.h b/src/mongo/db/s/migration_chunk_cloner_source.h
index cb4ebb53a29..00e17e8fe3a 100644
--- a/src/mongo/db/s/migration_chunk_cloner_source.h
+++ b/src/mongo/db/s/migration_chunk_cloner_source.h
@@ -35,6 +35,7 @@
 namespace mongo {
 
 class BSONObj;
+class MigrationSessionId;
 class OperationContext;
 class Status;
 class Timestamp;
@@ -161,6 +162,12 @@ public:
                             const repl::OpTime& opTime,
                             const repl::OpTime& preImageOpTime) = 0;
 
+    /**
+     * Returns the migration session id associated with this cloner, so stale sessions can be
+     * disambiguated.
+     */
+    virtual const MigrationSessionId& getSessionId() const = 0;
+
 protected:
     MigrationChunkClonerSource();
 };