public override void StopTask()
{
if (Context != null)
{
if (Context.NCacheLog.IsInfoEnabled)
{
Context.NCacheLog.Info("MapReduceTask(" + this.TaskId + ").StopTask", "MapReduce task is stopping.");
}
}
if (mapperTask != null)
{
mapperTask.StopTask();
}
if (combinerTask != null && CombinerConfigured)
{
combinerTask.StopTask();
}
if (reducerTask != null && ReducerConfigured)
{
reducerTask.StopTask();
}
mapperTask = null;
combinerTask = null;
reducerTask = null;
if (Context != null)
{
if (Context.NCacheLog.IsInfoEnabled)
{
Context.NCacheLog.Info("MapReduceTask(" + this.TaskId + ").StopTask", "MapReduce task has been stopped.");
}
}
}
public MapReduceTask(CacheBase parent, TaskCallback callback,
IMapper mapper,
ICombinerFactory combiner,
IReducerFactory reducer,
MapReduceInput inputProvider,
MapReduceOutput outputProvider,
Filter filter, CacheRuntimeContext context, int chunkSize, int maxExceps)
{
this._parent = parent;
this.Callback = callback;
this._context = context;
this.maxExceptions = maxExceps;
this.mapperTask = new MapperTask(mapper, inputProvider, filter != null ? filter.KeyFilter : null, this);
if (reducer != null)
{
ReducerConfigured = true;
this.reducerTask = new ReducerTask(reducer, this);
}
else
{
ReducerConfigured = true;
this.reducerTask = new ReducerTask(new IdentityReducerFactory(), this);
}
if (combiner != null)
{
CombinerConfigured = true;
this.combinerTask = new CombinerTask(combiner, this);
}
throttlingMgr = new MapReduceThrottlingManager(chunkSize, this);
this.outputProvider = outputProvider;
if (_parent != null && _parent is LocalCacheImpl)
{
isLocal = true;
participants = new Hashtable();
participants.Add(new Address(_parent.Context.Render.IPAddress, _parent.Context.Render.Port), new NodeTaskStatus());
}
#if !CLIENT
if (_parent != null && _parent is ClusterCacheBase)
{
ArrayList list = ((ClusterCacheBase)_parent).ActiveServers;
IEnumerator it = list.GetEnumerator();
participants = new Hashtable();
while (it.MoveNext())
{
participants.Add(it.Current, new NodeTaskStatus());
}
if (parent is PartitionedServerCache)
{
distributionMgr = ((PartitionedServerCache)parent).DistributionMgr;
}
}
#endif
//Queue itialization and synchronization
Queue syncQueue = Queue.Synchronized(reducerDataQueue);
this.reducerDataQueue = syncQueue;
}
