/// <summary>The waiting function.</summary>
/// <remarks>
/// The waiting function. The reduce exits once it gets a signal. Here the
/// signal is the file existence.
/// </remarks>
/// <exception cref="System.IO.IOException"/>
public virtual void Reduce(WritableComparable key, IEnumerator <Writable> val, OutputCollector
<WritableComparable, Writable> output, Reporter reporter)
{
if (fs != null)
{
while (!fs.Exists(signal))
{
try
{
reporter.Progress();
lock (this)
{
Sharpen.Runtime.Wait(this, 1000);
}
}
catch (Exception)
{
// wait for 1 sec
System.Console.Out.WriteLine("Interrupted while the map was waiting for the" + " signal."
);
break;
}
}
}
else
{
throw new IOException("Could not get the DFS!!");
}
}
/// <summary>Report progress.</summary>
public override void Progress()
{
reporter.Progress();
}
