Bug#24337625: SYSSCHEMA.FN_FORMAT_PATH IS FAILING ON THE PB2

              UNDO TABLESPACES RUN

Description: Mtr test, syschema.fn_format, is failing on PB2
platforms for "innodb_undo-2-debug" configuration where
"innodb_undo_tablespaces" is set to 2.

Analysis: For "innodb_undo-2-debug" configuration, the data
directory is pre installed with "innodb_undo_tablespaces=2".
This will create the innodb undo tablespaces inside the
default "innodb_undo_directory" path. But the mtr test,
"fn_format_path" uses its own innodb undo directory. So when
this test is run, it is failing to start the server throwing
the error, "[ERROR] InnoDB: Unable to open undo tablespace
'xxx'.". This happens because the innodb tablespaces are
created inside default "innodb_undo_directory" path and mtr
is checking for the tablespace inside the
"innodb_undo_directory" path specified by the test.

Fix: While starting the test, a custom data directory is
installed with appropriate "innodb_undo_tablespaces" and
"innodb_undo_directory".

Author: Arun Kuruvila

mysql-test/suite/sysschema/r/fn_format_path.result

@@ -1,3 +1,4 @@
+# restart: --datadir=CUSTOM_DATADIR --innodb_data_home_dir=MYSQLTEST_VARDIR/tmp/innodb --innodb_log_group_home_dir=MYSQLTEST_VARDIR/tmp/innodb_logs --innodb_undo_directory=MYSQLTEST_VARDIR/tmp/innodb_undo --innodb_undo_tablespaces=innodb_undo_tablespaces
 SELECT sys.format_path(NULL);
 sys.format_path(NULL)
 NULL
@@ -28,3 +29,4 @@ sys.format_path(@mypath)
 SELECT sys.format_path('/foo/bar/baz.foo');
 sys.format_path('/foo/bar/baz.foo')
 /foo/bar/baz.foo
+# restart

mysql-test/suite/sysschema/t/fn_format_path-master.opt

@@ -5,6 +5,36 @@
 # Verify the sys.format_path() function perfoms as expected
 #
 
+# Save current server option values;
+let $page_size = `select @@innodb_page_size`;
+let $innodb_undo_tablespaces = `select @@innodb_undo_tablespaces`;
+let $MYSQLD_BASEDIR= `select @@basedir`;
+
+# Create custom datadir
+--mkdir $MYSQL_TMP_DIR/custom_datadir
+let $CUSTOM_DATADIR = $MYSQL_TMP_DIR/custom_datadir/data;
+
+# Stop the server because the MTR uses default value for innodb_undo_directory.
+--source include/shutdown_mysqld.inc
+
+let BOOTSTRAP_SQL=$MYSQL_TMP_DIR/boot.sql;
+
+# Create bootstrap file
+write_file $BOOTSTRAP_SQL;
+CREATE DATABASE test;
+EOF
+
+# Set the bootstrap parameter with new innodb_undo_directory
+let NEW_CMD = $MYSQLD --no-defaults --initialize-insecure $KEYRING_PLUGIN_OPT --lc_messages_dir=$MYSQL_SHAREDIR --innodb-page-size=$page_size --innodb-undo-tablespaces=$innodb_undo_tablespaces --basedir=$MYSQLD_BASEDIR --datadir=$CUSTOM_DATADIR --innodb_log_file_size=5M --innodb_log_files_in_group=2 --innodb_undo_directory=$MYSQLTEST_VARDIR/tmp/innodb_undo --init-file=$BOOTSTRAP_SQL --secure-file-priv="" </dev/null>>$MYSQLTEST_VARDIR/tmp/bootstrap.log 2>&1;
+
+# Run the bootstrap command
+--exec $NEW_CMD
+
+# Start the DB server with new datadir, innodb_data_home_dir, innodb_log_group_home_dir and innodb_undo_directory
+--replace_result $CUSTOM_DATADIR CUSTOM_DATADIR $MYSQLTEST_VARDIR MYSQLTEST_VARDIR $innodb_undo_tablespaces innodb_undo_tablespaces
+--let $restart_parameters="restart: --datadir=$CUSTOM_DATADIR --innodb_data_home_dir=$MYSQLTEST_VARDIR/tmp/innodb --innodb_log_group_home_dir=$MYSQLTEST_VARDIR/tmp/innodb_logs --innodb_undo_directory=$MYSQLTEST_VARDIR/tmp/innodb_undo --innodb_undo_tablespaces=$innodb_undo_tablespaces"
+--source include/start_mysqld.inc
+
 # Passing NULL should return NULL
 SELECT sys.format_path(NULL);
 
@@ -40,3 +70,12 @@ SELECT sys.format_path(@mypath);
 
 # Unrecognized paths should return the full path
 SELECT sys.format_path('/foo/bar/baz.foo');
+
+# Restart the server
+let $restart_parameters=;
+--source include/restart_mysqld.inc
+
+# Cleanup
+--remove_file $BOOTSTRAP_SQL
+let CLEANUP_FOLDER= $MYSQL_TMP_DIR/custom_datadir;
+--source include/cleanup_folder.inc