Package org.apache.druid.query

Class NoopQueryProcessingPool

java.lang.Object

org.apache.druid.query.NoopQueryProcessingPool

All Implemented Interfaces:

com.google.common.util.concurrent.ListeningExecutorService, Executor, ExecutorService, QueryProcessingPool

public class NoopQueryProcessingPool
extends Object
implements QueryProcessingPool

Implementation of QueryProcessingPool that throws when any query execution task unit is submitted to it. It is semantically shutdown from the moment it is created, and since the shutdown methods are supposed to be idempotent, they do not throw like the execution methods

Constructor Summary

Constructors

Constructor	Description
NoopQueryProcessingPool()

Method Summary

Modifier and Type	Method	Description
boolean	awaitTermination(long l, TimeUnit timeUnit)
void	execute(Runnable runnable)
static NoopQueryProcessingPool	instance()
<T> List<Future<T>>	invokeAll(Collection<? extends Callable<T>> collection)
<T> List<Future<T>>	invokeAll(Collection<? extends Callable<T>> collection, long l, TimeUnit timeUnit)
<T> T	invokeAny(Collection<? extends Callable<T>> collection)
<T> T	invokeAny(Collection<? extends Callable<T>> collection, long l, TimeUnit timeUnit)
boolean	isShutdown()
boolean	isTerminated()
void	shutdown()
List<Runnable>	shutdownNow()
com.google.common.util.concurrent.ListenableFuture<?>	submit(Runnable runnable)
<T> com.google.common.util.concurrent.ListenableFuture<T>	submit(Runnable runnable, T t)
<T> com.google.common.util.concurrent.ListenableFuture<T>	submit(Callable<T> callable)
<T,V> com.google.common.util.concurrent.ListenableFuture<T>	submitRunnerTask(PrioritizedQueryRunnerCallable<T,V> task)	Submits the query execution unit task for asynchronous execution.

Methods inherited from class java.lang.Object

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

Constructor Detail

NoopQueryProcessingPool

public NoopQueryProcessingPool()

Method Detail

instance

public static NoopQueryProcessingPool instance()

submitRunnerTask

public <T,V> com.google.common.util.concurrent.ListenableFuture<T> submitRunnerTask(PrioritizedQueryRunnerCallable<T,V> task)

Description copied from interface: QueryProcessingPool

Submits the query execution unit task for asynchronous execution.

Specified by:

submitRunnerTask in interface QueryProcessingPool

Type Parameters:

T - - Task result type

V - - Query runner sequence type

Parameters:

task - - Task to be submitted.

Returns:

- Future object for tracking the task completion.

submit

public <T> com.google.common.util.concurrent.ListenableFuture<T> submit(Callable<T> callable)

Specified by:

submit in interface ExecutorService

Specified by:

submit in interface com.google.common.util.concurrent.ListeningExecutorService

submit

public com.google.common.util.concurrent.ListenableFuture<?> submit(Runnable runnable)

Specified by:

submit in interface ExecutorService

Specified by:

submit in interface com.google.common.util.concurrent.ListeningExecutorService

submit

public <T> com.google.common.util.concurrent.ListenableFuture<T> submit(Runnable runnable,
                                                                        T t)

Specified by:

submit in interface ExecutorService

Specified by:

submit in interface com.google.common.util.concurrent.ListeningExecutorService

invokeAll

public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> collection)

Specified by:

invokeAll in interface ExecutorService

Specified by:

invokeAll in interface com.google.common.util.concurrent.ListeningExecutorService

invokeAll

public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> collection,
                                     long l,
                                     TimeUnit timeUnit)

Specified by:

invokeAll in interface ExecutorService

Specified by:

invokeAll in interface com.google.common.util.concurrent.ListeningExecutorService

shutdown

public void shutdown()

Specified by:

shutdown in interface ExecutorService

shutdownNow

public List<Runnable> shutdownNow()

Specified by:

shutdownNow in interface ExecutorService

isShutdown

public boolean isShutdown()

Specified by:

isShutdown in interface ExecutorService

isTerminated

public boolean isTerminated()

Specified by:

isTerminated in interface ExecutorService

awaitTermination

public boolean awaitTermination(long l,
                                TimeUnit timeUnit)

Specified by:

awaitTermination in interface ExecutorService

invokeAny

public <T> T invokeAny(Collection<? extends Callable<T>> collection)

Specified by:

invokeAny in interface ExecutorService

invokeAny

public <T> T invokeAny(Collection<? extends Callable<T>> collection,
                       long l,
                       TimeUnit timeUnit)

Specified by:

invokeAny in interface ExecutorService

execute

public void execute(Runnable runnable)

Specified by:

execute in interface Executor