All Known Implementing Classes:

MiniAccumuloClusterControl, StandaloneClusterControl
```
public interface ClusterControl
```
Basic functionality required to control an Accumulo cluster

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`adminStopAll()`	Issue an orderly shutdown of the cluster, throws an exception if it fails to return successfully (return value of 0).
`int`	`exec(Class<?> clz, String[] args)`	Execute the given class against the cluster with the provided arguments and waits for completion.
`Map.Entry<Integer,String>`	`execWithStdout(Class<?> clz, String[] args)`	Execute the given class against the cluster with the provided arguments and waits for completion.
`void`	`kill(ServerType server, String hostname)`	Send SIGKILL to the given process on the host
`void`	`resume(ServerType server, String hostname)`	Send SIGCONT to the given process on the host
`void`	`signal(ServerType server, String hostname, String signal)`	Send the provided signal to the process on the host
`void`	`start(ServerType server, String hostname)`	Start the given process on the host
`void`	`startAllServers(ServerType server)`	Starts all occurrences of the given server
`void`	`startCompactors(Class<? extends Compactor> compactor, int limit, String queueName)`	Start instances of Compactors
`void`	`startCoordinator(Class<? extends CompactionCoordinator> coordinator)`	Start an instance of CompactionCoordinator
`void`	`stop(ServerType server, String hostname)`	Stop the given process on the host
`void`	`stopAllServers(ServerType server)`	Stops all occurrences of the given server
`void`	`suspend(ServerType server, String hostname)`	Send SIGSTOP to the given process on the host

Method Detail

exec
```
int exec(Class<?> clz,
         String[] args)
  throws IOException
```
Execute the given class against the cluster with the provided arguments and waits for completion. Returns the exit code of the process.

Throws:

IOException

execWithStdout

Map.Entry<Integer,String> execWithStdout(Class<?> clz,
                                               String[] args)
                                        throws IOException

Execute the given class against the cluster with the provided arguments and waits for completion. Returns the exit code of the process with the stdout.

Throws:: IOException

adminStopAll
```
void adminStopAll()
           throws IOException
```
Issue an orderly shutdown of the cluster, throws an exception if it fails to return successfully (return value of 0).

Throws:

IOException

startCompactors

void startCompactors(Class<? extends Compactor> compactor,
                     int limit,
                     String queueName)
              throws IOException

Start instances of Compactors

Parameters:: compactor - compactor class; limit - number of compactors to start; queueName - name of queue
Throws:: IOException

startCoordinator
```
void startCoordinator(Class<? extends CompactionCoordinator> coordinator)
               throws IOException
```
Start an instance of CompactionCoordinator

Parameters:

coordinator - compaction coordinator class

Throws:

IOException

startAllServers

void startAllServers(ServerType server)
              throws IOException

Starts all occurrences of the given server

Throws:: IOException

start

void start(ServerType server,
           String hostname)
    throws IOException

Start the given process on the host

Throws:: IOException

stopAllServers

void stopAllServers(ServerType server)
             throws IOException

Stops all occurrences of the given server

Throws:: IOException

stop

void stop(ServerType server,
          String hostname)
   throws IOException

Stop the given process on the host

Throws:: IOException

signal

void signal(ServerType server,
            String hostname,
            String signal)
     throws IOException

Send the provided signal to the process on the host

Throws:: IOException

suspend

void suspend(ServerType server,
             String hostname)
      throws IOException

Send SIGSTOP to the given process on the host

Throws:: IOException

resume

void resume(ServerType server,
            String hostname)
     throws IOException

Send SIGCONT to the given process on the host

Throws:: IOException

kill

void kill(ServerType server,
          String hostname)
   throws IOException

Send SIGKILL to the given process on the host

Throws:: IOException

Interface ClusterControl