Upgrading MariaDB 10.1.32 version to 10.3.7 - mariadb

Question

Is it possible to upgrade from 10.1.x to 10.3.x directly in one step? or I have to upgrade first to 10.2. x then to 10.3.x.
Please it is so important question regarding upgrading our production MariaDB servers and I couldn't find any answer or notes regarding upgrade from 10.1 series to 10.3 series.
So i have to do it as follow:
10.1.32 --> 10.2.16
10.2.16 --> 10.3.7
or
once 10.1.32 --> 10.3.7

Answer 1

In general, for any upgrade for a critical production environment:
The best approach is to use or create a test environment that is as close as possible to your production environment and test the upgrade there.
Make backups and prepare a rollback so you are ready to undo your changes
For MariaDB specifically: to quote from other related questions on their support pages:
The main concern with skipping versions is that, while upgrading one major version is usually well-tested, skipping versions is not, so you
may bump into an incompatibility
Even if you find anecdotal indications that it worked for others, a database engine like MariaDB has possible complexities with different storage engines and the like that might make it more tricky in certain setups than in others.

Answer 2

1 : Shutdown or Quit your XAMPP server from Xampp control panel.
2 : Download the ZIP version of MariaDB
3 : Rename the xampp/mysql folder to mysql_old.
4 : Unzip or Extract the contents of the MariaDB ZIP file into your XAMPP
folder.
5 : Rename the MariaDB folder, called something like mariadb-5.5.37-win32, to
mysql.
6 : Rename xampp/mysql/data to data_old.
7 : Copy the xampp/mysql_old/data folder to xampp/mysql/.
8 : Copy the xampp/mysql_old/backup folder to xampp/mysql/.
9 : Copy the xampp/mysql_old/scripts folder to xampp/mysql/.
10: Copy mysql_uninstallservice.bat and mysql_installservice.bat from
xampp/mysql_old/ into xampp/mysql/.
11 : Copy xampp/mysql_old/bin/my.ini into xampp/mysql/bin.
12 : Edit xampp/mysql/bin/my.ini using a text editor like Notepad. Find skip-federated and add a # in front (to the left) of it to comment out the line if it exists. Save and exit the editor.
13 : Start-up XAMPP.
Note If you can't get mysql to start from Xampp control panel.
Add this 'skip-grant-tables' statement anywhere in xampp/mysql/bin/my.ini
file
14 : Run xampp/mysql/bin/mysql_upgrade.exe.
15 : Shutdown and restart MariaDB (MySQL).
If still mysql is not started then follow below Note steps(!Important)
Note :mysql error log file: c:\xampp\mysql\bin\mysqld.exe: unknown variable 'innodb_additional_mem_pool_size=2M' like please remove or commented this statement in my.ini file in this path xampp/mysql/bin/my.ini file.
Help from this link.