PXB-3220 Add tests

storage/innobase/fil/fil0fil.cc

@@ -11998,6 +11998,7 @@ dberr_t Tablespace_dirs::scan(bool populate_fil_cache) {
     err = DB_SUCCESS;
   }
 
+  debug_sync_point("xtrabackup_suspend_between_file_discovery_and_open");
   if (err == DB_SUCCESS && populate_fil_cache) {
     bool result = true;
     std::function<void(const Const_iter &, const Const_iter &, size_t, bool &)>

storage/innobase/xtrabackup/test/suites/lockless/ddl_between_discovery_and_file_open.sh

@@ -0,0 +1,62 @@
+###############################################################################
+# PXB-3220: Tolerate file deletion/rename between discovery and file open
+###############################################################################
+
+. inc/common.sh
+
+require_debug_pxb_version
+
+start_server
+
+$MYSQL $MYSQL_ARGS -Ns -e "CREATE TABLE test.drop_table (id INT PRIMARY KEY AUTO_INCREMENT); INSERT INTO test.drop_table VALUES(1);" test
+$MYSQL $MYSQL_ARGS -Ns -e "CREATE TABLE test.rename_table (id INT PRIMARY KEY AUTO_INCREMENT); INSERT INTO test.rename_table VALUES(1);" test
+$MYSQL $MYSQL_ARGS -Ns -e "CREATE TABLE test.alter_rename_table (id INT PRIMARY KEY AUTO_INCREMENT); INSERT INTO test.alter_rename_table VALUES(1)" test
+$MYSQL $MYSQL_ARGS -Ns -e "CREATE TABLE test.alter_drop_column_table (id INT PRIMARY KEY AUTO_INCREMENT, name VARCHAR(50)); INSERT INTO test.alter_drop_column_table VALUES(1, 'test')" test
+
+innodb_wait_for_flush_all
+
+xtrabackup --backup --target-dir=$topdir/backup \
+  --debug-sync="xtrabackup_suspend_between_file_discovery_and_open" --lock-ddl=REDUCED \
+  2> >( tee $topdir/backup.log)&
+
+job_pid=$!
+pid_file=$topdir/backup/xtrabackup_debug_sync
+wait_for_xb_to_suspend $pid_file
+xb_pid=`cat $pid_file`
+echo "backup pid is $job_pid"
+
+# Delete table
+$MYSQL $MYSQL_ARGS -Ns -e "DROP TABLE test.drop_table;" test
+# Rename table and generate redo
+$MYSQL $MYSQL_ARGS -Ns -e "RENAME TABLE test.rename_table TO test.new_rename_table; INSERT INTO test.new_rename_table VALUES(2);" test
+# Alter table rename and generate redo
+$MYSQL $MYSQL_ARGS -Ns -e "ALTER TABLE test.alter_rename_table RENAME test.new_alter_rename_table; INSERT INTO test.new_alter_rename_table VALUES(2);" test
+# Alter table drop column and generate redo
+$MYSQL $MYSQL_ARGS -Ns -e "ALTER TABLE test.alter_drop_column_table DROP COLUMN name; INSERT INTO test.alter_drop_column_table VALUES(2);" test
+
+# Resume the xtrabackup process
+vlog "Resuming xtrabackup"
+kill -SIGCONT $xb_pid
+run_cmd wait $job_pid
+
+if ! egrep -q "DDL tracking : LSN: [0-9]* delete table ID: [0-9]* Name: test/drop_table.ibd" $topdir/backup.log ; then
+    die "xtrabackup did not handle delete table DDL"
+fi
+
+if ! egrep -q "DDL tracking : LSN: [0-9]* rename table ID: [0-9]* From: test/rename_table.ibd To: test/new_rename_table.ibd" $topdir/backup.log ; then
+    die "xtrabackup did not handle rename table DDL"
+fi
+
+if ! egrep -q "DDL tracking : LSN: [0-9]* rename table ID: [0-9]* From: test/alter_rename_table.ibd To: test/new_alter_rename_table.ibd" $topdir/backup.log ; then
+    die "xtrabackup did not handle alter table rename DDL"
+fi
+
+xtrabackup --prepare --target-dir=$topdir/backup
+record_db_state test
+stop_server
+rm -rf $mysql_datadir/*
+xtrabackup --copy-back --target-dir=$topdir/backup
+start_server
+verify_db_state test
+stop_server
+rm -rf $mysql_datadir $topdir/backup