MDEV-7660 - MySQL WL#6671 "Improve scalability by not using thr_lock.c locksbb-10.2-mdev7660

            for InnoDB tables"

Don't use thr_lock.c locks for InnoDB tables.

Let HANDLER READ call external_lock() even if SE is not going to be locked by
THR_LOCK. This fixes at least main.implicit_commit failure.

Removed tests for BUG#45143 and BUG#55930 which cover InnoDB + THR_LOCK. To
operate properly these tests require code flow to go through THR_LOCK debug
sync points, which is not the case after this patch. These tests are removed
by WL#6671 as well. An alternative is to port them to different storage engine.

1 files changed, 0 insertions, 42 deletions

diff --git a/mysql-test/r/truncate_coverage.result b/mysql-test/r/truncate_coverage.result
index 95e649912e5..078de1ef3ab 100644
--- a/mysql-test/r/truncate_coverage.result
+++ b/mysql-test/r/truncate_coverage.result
@@ -6,48 +6,6 @@ DROP TABLE IF EXISTS t1;
 CREATE TABLE t1 (c1 INT);
 INSERT INTO t1 VALUES (1);
 connect  con1, localhost, root,,;
-HANDLER t1 OPEN;
-connection default;
-LOCK TABLE t1 WRITE;
-SET DEBUG_SYNC='mdl_upgrade_lock SIGNAL waiting';
-TRUNCATE TABLE t1;
-connect  con2, localhost, root,,;
-SET DEBUG_SYNC='now WAIT_FOR waiting';
-KILL QUERY @id;
-disconnect con2;
-connection default;
-ERROR 70100: Query execution was interrupted
-UNLOCK TABLES;
-connection con1;
-# Release shared metadata lock by closing HANDLER.
-HANDLER t1 CLOSE;
-disconnect con1;
-connection default;
-DROP TABLE t1;
-SET DEBUG_SYNC='RESET';
-CREATE TABLE t1 (c1 INT);
-INSERT INTO t1 VALUES (1);
-connect  con1, localhost, root,,;
-HANDLER t1 OPEN;
-connection default;
-LOCK TABLE t1 WRITE;
-SET DEBUG_SYNC='mdl_upgrade_lock SIGNAL waiting';
-TRUNCATE TABLE t1;
-connect  con2, localhost, root,,;
-SET DEBUG_SYNC='now WAIT_FOR waiting';
-disconnect con2;
-connection con1;
-HANDLER t1 CLOSE;
-disconnect con1;
-connection default;
-ERROR 42S02: Table 'test.t1' doesn't exist
-UNLOCK TABLES;
-DROP TABLE t1;
-ERROR 42S02: Unknown table 'test.t1'
-SET DEBUG_SYNC='RESET';
-CREATE TABLE t1 (c1 INT);
-INSERT INTO t1 VALUES (1);
-connect  con1, localhost, root,,;
 START TRANSACTION;
 INSERT INTO t1 VALUES (2);
 connection default;