/// <summary>
/// Starts a new execution and adds it to the executions collection
/// </summary>
private void StartNewExecution()
{
try
{
var execution = new RequestExecution <T>(this, _session, _request);
execution.Start();
_running.Add(execution);
ScheduleNext();
}
catch (NoHostAvailableException ex)
{
if (_running.Count == 0)
{
//Its the sending of the first execution
//There isn't any host available, yield it to the user
SetCompleted(ex);
}
//Let's wait for the other executions
}
catch (Exception ex)
{
//There was an Exception before sending: a protocol error or the keyspace does not exists
SetCompleted(ex);
}
}
public void SetNoMoreHosts(NoHostAvailableException ex, RequestExecution <T> execution)
{
//An execution ended with a NoHostAvailableException (retrying or starting).
//If there is a running execution, do not yield it to the user
_running.Remove(execution);
if (_running.Count > 0)
{
Logger.Info("Could not obtain an available host for speculative execution");
return;
}
SetCompleted(ex);
}