Can we start the maven build from the point where it failed

you can resume the build from any module you want by using the -rf command. For example, if your build failed in myproject-proxy, you can use the following command:

mvn -rf myproject-proxy clean install

Here is the example

mvn clean install -rf :your-module

You can resume the build from the 6th module using -rf or --resume-from:

-rf, --resume-from
          Resume reactor from specified project

See the Advanced Reactor Options for details.