Example usage for org.apache.hadoop.yarn.event EventHandler handle

Introduction

In this page you can find the example usage for org.apache.hadoop.yarn.event EventHandler handle.

Prototype

void handle(T event);

Source Link

Usage

From source file:org.apache.tajo.master.TajoAsyncDispatcher.java

License:Apache License

@SuppressWarnings("unchecked")
protected void dispatch(Event event) {
    //all events go thru this loop
    if (LOG.isDebugEnabled()) {
        LOG.debug("Dispatching the event " + event.getClass().getName() + "." + event.toString());
    }//from  w w  w . j  a v  a2  s .  c  o  m
    Class<? extends Enum> type = event.getType().getDeclaringClass();

    try {
        EventHandler handler = eventDispatchers.get(type);
        if (handler != null) {
            handler.handle(event);
        } else {
            throw new Exception("No handler for registered for " + type);
        }
    } catch (Throwable t) {
        //TODO Maybe log the state of the queue
        LOG.fatal("Error in dispatcher thread:" + event.getType(), t);
        if (exitOnDispatchException && (ShutdownHookManager.get().isShutdownInProgress()) == false) {
            LOG.info("Exiting, bye..");
            System.exit(-1);
        }
    } finally {
    }
}

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From source file:org.apache.tez.common.AsyncDispatcher.java

License:Apache License

protected void dispatch(Event event) {
    //all events go thru this loop
    if (LOG.isDebugEnabled()) {
        LOG.debug("Dispatching the event " + event.getClass().getName() + "." + event.toString());
    }//from  ww  w. ja  v a  2  s  . c  om

    Class<? extends Enum> type = event.getType().getDeclaringClass();

    try {
        EventHandler handler = eventHandlers.get(type);
        if (handler != null) {
            handler.handle(event);
        } else {
            throw new Exception("No handler for registered for " + type);
        }
    } catch (Throwable t) {
        LOG.fatal("Error in dispatcher thread", t);
        // If serviceStop is called, we should exit this thread gracefully.
        if (exitOnDispatchException && (ShutdownHookManager.get().isShutdownInProgress()) == false
                && stopped == false) {
            LOG.info("Exiting, bbye..");
            System.exit(-1);
        }
    }
}

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From source file:org.apache.tez.common.AsyncDispatcherConcurrent.java

License:Apache License

protected void dispatch(Event event) {
    //all events go thru this loop
    if (LOG.isDebugEnabled()) {
        LOG.debug("Dispatching the event " + event.getClass().getName() + "." + event.toString());
    }/*from  www .j  av a2  s  . c  o  m*/

    Class<? extends Enum> type = event.getType().getDeclaringClass();

    try {
        EventHandler handler = eventHandlers.get(type);
        if (handler != null) {
            handler.handle(event);
        } else {
            throw new Exception("No handler for registered for " + type);
        }
    } catch (Throwable t) {
        LOG.error("Error in dispatcher thread", t);
        // If serviceStop is called, we should exit this thread gracefully.
        if (exitOnDispatchException && (ShutdownHookManager.get().isShutdownInProgress()) == false
                && stopped == false) {
            Thread shutDownThread = new Thread(createShutDownThread());
            shutDownThread.setName("AsyncDispatcher ShutDown handler");
            shutDownThread.start();
        }
    }
}

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From source file:org.apache.tez.common.DrainDispatcher.java

License:Apache License

@SuppressWarnings("unchecked")
@Override//w w w .  j  a  v a 2s . c om
public EventHandler getEventHandler() {
    final EventHandler actual = super.getEventHandler();
    return new EventHandler() {
        @Override
        public void handle(Event event) {
            synchronized (mutex) {
                actual.handle(event);
                drained = false;
            }
        }
    };
}

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