MDEV-34830 fixup: Relax an assertion

dr-m · dr-m · commit 1067046b7f43 · 2024-10-22T09:09:11.000+03:00
It is possible that recv_sys.scanned_lsn is ahead of recv_sys.recovered_lsn
by a few 512-byte log blocks in case the last mini-transaction in the log
had not been written out completely before the server was killed.
This is occasionally the case when running the test
innodb.innodb-32k-crash.
diff --git a/storage/innobase/log/log0recv.cc b/storage/innobase/log/log0recv.cc
@@ -4671,7 +4671,8 @@ recv_recovery_from_checkpoint_start(lsn_t flush_lsn)
 			rescan = true;
 		}
 
-		ut_ad(log_sys.get_lsn() >= recv_sys.scanned_lsn);
+		ut_ad(log_sys.get_lsn() >= recv_sys.scanned_lsn
+		      || log_sys.get_lsn() >= recv_sys.recovered_lsn);
 
 		recv_sys.parse_start_lsn = checkpoint_lsn;
 

Original file line number	Diff line number	Diff line change
`@@ -4671,7 +4671,8 @@ recv_recovery_from_checkpoint_start(lsn_t flush_lsn)`
`4671`	`4671`	`rescan = true;`
`4672`	`4672`	`}`
`4673`	`4673`
`4674`		`- ut_ad(log_sys.get_lsn() >= recv_sys.scanned_lsn);`
	`4674`	`+ ut_ad(log_sys.get_lsn() >= recv_sys.scanned_lsn`
	`4675`	`+ \|\| log_sys.get_lsn() >= recv_sys.recovered_lsn);`
`4675`	`4676`
`4676`	`4677`	`recv_sys.parse_start_lsn = checkpoint_lsn;`
`4677`	`4678`