Commissioning Applications on Linux

Scenario

After the code is developed, you can compile the code into a JAR file and upload it to a Linux environment for application function commissioning.

Before commissioning applications on Linux, you need to pre-install a client on the Linux node.

Procedure

1. In the Windows development environment IntelliJ IDEA, choose Maven Projects > JDBCExample > Lifecycle and perform the clean and package operations. After the compilation is complete, the JDBCExample-1.0-SNAPSHOT.jar file is generated in the target directory.
2. Run the following command to create the running directory in Linux:

   mkdir -p /opt/hetuclient;

3. Upload the JDBCExample-1.0-SNAPSHOT.jar package to the /opt/hetuclient directory in Linux.
4. Download and decompress the client file FusionInsight_Cluster_Cluster ID_ HetuEngine_Client.tar by referring to Preparing an Operating Environment, obtain the JDBC drive package, and upload it to the /opt/hetuclient directory in the Linux environment.
   

   To obtain the JDBC driver package:

   Obtain the hetu-jdbc-*.jar file from the FusionInsight_Cluster_Cluster ID_HetuEngine_ClientConfig\HetuEngine\xxx\ directory.

   Note: xxx can be arm or x86.

5. Run the following command to go to the client installation directory:

   cd /opt/client;

6. Run the following command to configure environment variables:

   source bigdata_env;

7. Run the following command to debug the development program:

   cd /opt/hetuclient;

   java -classpath JDBCExample-*.jar:hetu-jdbc-*.jar com.huawei.hetu.className

   

   • Replace the JDBC driver package name and class name with the actual ones, for example, java -classpath JDBCExample-*.jar:hetu-jdbc-*.jar com.huawei.hetu.JDBCExampleZk.
   • If SSL authentication of ZooKeeper is enabled for the interconnected cluster, you need to add the following JVM configuration

     -Dzookeeper.clientCnxnSocket=org.apache.zookeeper.ClientCnxnSocketNetty -Dzookeeper.client.secure=true.

     The corresponding debugging command is as follows: java -cp JDBCExample-*.jar:hetu-jdbc-*.jar -Dzookeeper.clientCnxnSocket=org.apache.zookeeper.ClientCnxnSocketNetty -Dzookeeper.client.secure=true com.huawei.hetu.JDBCExampleZK

     .

8. Check whether the command output is normal.

   .......
   Table
   testtable