return new OutputReceiver()
{
@Override
public void updateOutput(Object result)
{
@SuppressWarnings("unchecked")
MaterializedViewWriterResult writerResult = MaterializedViewWriterResult.forMap((Map<String, Object>) result);
String oldValue = shardsDone.put(writerResult.getShardUuid(), writerResult.getNodeIdentifier());
checkState(oldValue == null || oldValue.equals(writerResult.getNodeIdentifier()),
"Seen a different node committing a shard (%s vs %s)", oldValue, writerResult.getNodeIdentifier());
for (Map.Entry<String, PartitionInfo> entry : finishedPartitions.entrySet()) {
if (!partitionsDone.contains(entry.getKey())) {
considerCommittingPartition(entry.getKey(), entry.getValue());
}