Eclipse - MariaDB JDBC onnection issue (bug or I messed up something?) - eclipse

Question

I started learning Java EE, and I decided to develop my small application in simulated "real world production" environment:
I decoupled the development and deployment environment into a laptop (with Eclipse IDE) and a server (Raspberry Pi with Tomcat/TomEE and MariaDB).
With this environment I can learn not only EE development but the deployment phase, too.
The problem
After installation of MariaDB I realized that the MariaDB's JDBC connector doesn't work properly. I successfully made a connection in Eclipse via Generic JDBC (I used MariaDB's default connector). Pinging the server was also successful, but every query returned void results.
I tried the following queries:
show tables in dbName;
select * from tableName;
show databases;
When I tried to make entities from tables in a new JPA project, Eclipse didn't offered any tables.
Can somebody please help me to make a complete working connection to MariaDB.
What did I try (until this moment, without result)?
Updated the Raspbian system by apt-get update, moreover I did the same after installing MariaDB.
Tried to install MySql 5.6 with apt-get and dpkg, but the armhf version is not available on Raspbian Stretch
In Eclipse's Preferences/Data Management/Connectivity/Driver Definitions I tried to install MySql driver instead Generic JDBC
In properties (in Edit Driver Definition) tried the following Connection URL-s:
jdbc:mysql://hostName:port/
jdbc:mariadb://hostName:port/
jdbc:mysql://hostName:port/dbName
jdbc:mariadb://hostName:port/dbName
jdbc:mysql://hostName:port/dbName?user=userName&password=password
jdbc:mariadb://hostName:port/dbName?user=userName&password=password
Tried older version of JDBC connectors, too (mariadb-java-client-2.1.0.jar), without good result.
I installed MySQL on local machine, I could connect it in Eclipse successfully.
I could successfully connect, create, insert, alter tables in MariaDB from locally installed MySqlWorkbench.
I installed MariaDB on local machine. Despite the connection ping was successful in Eclipse, the void query result was the same as the remote MariaDB connection.
I installed NetBeans to check whether I can connect MariaDB with it's driver. The result was SUCCESS (screenshot is attached)
One more weird thing: in Data Source Explorer the tree structure is different between MySQL and MariaDB (see the screenshot)
The environment
Server:
Raspbian Stretch (Debian 9.1)
Java: openJKD 1.8.0_141, OpenJDK Runtime Environment build 1.8.0_141-8u141-b15-1~deb9ul-b15, OpenJDK Zero VM build 25.141-b15-1~deb9ul-b15
MariaDB Ver 15.1 Distrib 10.1.23-MariaDB, for debian-linux-gnueabihf (armv71)
Local machine:
Windows 10 Pro 64bit, version: 1703, build: 15063.674 (Hungarian language local)
MySqlWorkbench 6.3CE, 6.3.9 build 10690321 CE(64 bits)
Eclipse Neon.3 Release (4.6.3), Build id: 20170314-1500
NetBeans IDE 8.2, Build 201705191307
Java: JDK 1.8.0_151 (x86_64 architecture)
JDBC: mariadb-java-client-2.1.2.jar (This worked successfully with NetBeans)
To summarize, in Eclipse I can make a connection to MariaDB via Generic JDBC, the ping is successful, but I cannot get any result from queries (and cannot generate entities from tables).

Answer 1

Solved:
In Eclipse you don't have to use MariaDB's JDBC 2.1.2. connector. It is fully MySQL compatible just use MySQL JDBC 5.1 default (mysql-connector-java-5.1.41-bin.jar). Now it works fine!