[Tarantool-patches] [PATCH v14 1/6] qsync: track confirmed lsn number on reads

[Cyrill Gorcunov via Tarantool-patches <tarantool-patches@dev.tarantool.org>]

We will use this lsn for requests validation
in next patches for sake of split-brain detection.

Part-of #6036

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
---
 src/box/txn_limbo.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/box/txn_limbo.c b/src/box/txn_limbo.c
index 70447caaf..cca2ce493 100644
--- a/src/box/txn_limbo.c
+++ b/src/box/txn_limbo.c
@@ -437,6 +437,13 @@ txn_limbo_read_confirm(struct txn_limbo *limbo, int64_t lsn)
 		assert(e->txn->signature >= 0);
 		txn_complete_success(e->txn);
 	}
+
+	/*
+	 * We use confirmed lsn number to verify requests and
+	 * reject ones coming from split-brain cluster configurations,
+	 * so update it even if there were no entries to process.
+	 */
+	limbo->confirmed_lsn = lsn;
 }
 
 /**
-- 
2.31.1