public void Receive<TKey>(PartitionedStream<TOutput, TKey> partitionedStream)
{
#if DEBUG
_received = true;
#endif
_mergeExecutor = MergeExecutor<TOutput>.Execute<TKey>(
partitionedStream, _forEffectMerge, _mergeOptions, _taskScheduler, _isOrdered, _cancellationState, _queryId);
TraceHelpers.TraceInfo("[timing]: {0}: finished opening - QueryOperator<>::GetEnumerator", DateTime.Now.Ticks);
}
}