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MDEV-35304: Add Connects_Tried and Master_Retry_Count to SSS

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When the IO thread (re)connect to a primary,
no updates are available besides unique errors that cause the failure.
These new `Master_info` numbers supplement SHOW SLAVE STATUS’s (most-
recent) ‘Connecting’ state with statistics on (re)connect attempts:

* `Connects_Tried`: how many retries have been attempted so far
  This was previously a local variable that only counted re-attempts;
  it’s now meaningful even after the “Connecting” state concludes.
* `Master_Retry_Count` (from MDEV-25674): out of how many configured

Side-note: Some of the tests updated by this commit dump the entire
SHOW SLAVE STATUS, which might include non-deterministic entries.

Reviewed-by: Kristian Nielsen <knielsen@knielsen-hq.org>
Reviewed-by: Brandon Nesterenko <brandon.nesterenko@mariadb.com>
This commit is contained in:
ParadoxV5
2025-02-20 16:56:12 -07:00
parent 7094a75596
commit e2dbd9b6ac
19 changed files with 374 additions and 79 deletions
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2
tests/mysql_client_test.c
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@@ -469,7 +469,7 @@ static void test_prepare_simple()
strmov(query, "SHOW SLAVE STATUS");
stmt= mysql_simple_prepare(mysql, query);
check_stmt(stmt);
DIE_UNLESS(mysql_stmt_field_count(stmt) == 54);
DIE_UNLESS(mysql_stmt_field_count(stmt) == 56);
mysql_stmt_close(stmt);
/* show master status */