List<BufferInfo> bufferStates = ImmutableList.copyOf(transform(initialOutputIds, new Function<String, BufferInfo>()
{
@Override
public BufferInfo apply(String outputId)
{
return new BufferInfo(outputId, false, 0, 0);
}
}));
if (initialSplit != null) {
checkState(planFragment.isPartitioned(), "Plan is not partitioned");