Hadoop/Yarn: Running multiple commands on container

Question

I am using containerLaunchContext.setCommands() to add different commands that I wanted to run on container. But only first command is getting execute.Is there is something else I need to do?

List commands = new ArrayList();commands.add(cmd1);commands.add(cmd2);

I can see only cmd1 is getting executed.

Answer 1

I found that UnixShellScriptBuilder#command just concatenates each commands with space, not with ";".
Therefore, you need to suffix ";" after commands you'd like to execute.

UnixShellScriptBuilder {
 @Override
 public void command(List command) {
 line("exec /bin/bash -c "", StringUtils.join(" ", command), """);
 }
}