1 files changed, 51 insertions, 0 deletions
diff --git a/mysql-test/suite/mariabackup/alter_copy_race.test b/mysql-test/suite/mariabackup/alter_copy_race.test
new file mode 100644
index 00000000..553643bf
--- /dev/null
+++ b/mysql-test/suite/mariabackup/alter_copy_race.test
@@ -0,0 +1,51 @@
+--source include/have_innodb.inc
+--source include/have_debug.inc
+--source include/have_debug_sync.inc
+
+# The test demonstrates that intermediate tables (ALTER TABLE...ALGORITHM=COPY)
+# are not always properly locked, e.g., can be dropped after
+#  BACKUP STAGE BLOCK_COMMIT
+# succeeded.
+# Thus mariabackup decides not to have them in backup at all,
+# since they keep changing even after the backup LSN was determined.
+
+echo # xtrabackup backup;
+let $targetdir=$MYSQLTEST_VARDIR/tmp/backup;
+
+CREATE TABLE t1(i int) ENGINE=InnoDB;
+INSERT into t1 values(1);
+
+connect  con2, localhost, root,,;
+connection con2;
+set lock_wait_timeout=1;
+SET debug_sync='copy_data_between_tables_before_reset_backup_lock  SIGNAL go WAIT_FOR after_backup_stage_block_commit';
+SET debug_sync='alter_table_after_temp_table_drop SIGNAL temp_table_dropped';
+DELIMITER |;
+send  SET debug_sync='now WAIT_FOR after_backup_stage_start';ALTER TABLE test.t1 FORCE, algorithm=COPY;|
+DELIMITER ;|
+connection default;
+
+# setup mariabackup events
+let after_backup_stage_start=SET debug_sync='now SIGNAL after_backup_stage_start WAIT_FOR go';
+let after_backup_stage_block_commit=SET debug_sync='now SIGNAL after_backup_stage_block_commit';
+let backup_fix_ddl=SET debug_sync='now WAIT_FOR temp_table_dropped';
+--disable_result_log
+exec  $XTRABACKUP --defaults-file=$MYSQLTEST_VARDIR/my.cnf  --backup  --target-dir=$targetdir  --dbug=+d,mariabackup_events;
+--enable_result_log
+
+connection con2;
+--error ER_LOCK_WAIT_TIMEOUT
+reap;
+SET debug_sync='RESET';
+disconnect con2;
+
+connection default;
+echo # xtrabackup prepare;
+--disable_result_log
+exec $XTRABACKUP  --prepare --target-dir=$targetdir;
+-- source include/restart_and_restore.inc
+--enable_result_log
+
+SELECT * FROM t1;
+DROP TABLE t1;
+rmdir $targetdir;