Package org.apache.drill.yarn.client

Class StartCommand

java.lang.Object

org.apache.drill.yarn.client.ClientCommand

org.apache.drill.yarn.client.StartCommand

public class StartCommand
extends ClientCommand

Launches a drill cluster by uploading the Drill archive then launching the Drill Application Master (AM). For testing, can also do just the upload or just the launch. Handles both a localized Drill and a non-localized launch (which uses a pre-installed Drill.)

This single operation combines upload and launch because the upload Information is needed by the launch.

On the surface, it would seem that uploading a file and launching an app should be simple operations. However, under YARN, we must handle a large number of details that must be gotten exactly right. Plus, both the upload and launch can be slow operations, so we provide feedback to the user that something is, indeed, happening.

Field Summary

Fields inherited from class org.apache.drill.yarn.client.ClientCommand

opts

Constructor Summary

Constructors

Constructor	Description
StartCommand(boolean upload, boolean launch)

Method Summary

Modifier and Type	Method	Description
void	run()

Methods inherited from class org.apache.drill.yarn.client.ClientCommand

checkAppId, getAppIdFile, getClient, loadAppId, removeAppIdFile, setOpts

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

StartCommand

public StartCommand(boolean upload,
 boolean launch)

Method Details

run

public void run()
         throws ClientException

Specified by:

run in class ClientCommand

Throws:

ClientException