フリー問題

問題文

How does HDFS lay out one large table file across the cluster?

選択肢

1. The file splits into replicated blocks placed on several DataNodes, and the accompanying namespace keeps the compressed bytes on the NameNode.
2. The file splits into sorted rows placed on several DataNodes, and the accompanying namespace keeps the compressed bytes on the NameNode.
3. The file splits into replicated blocks placed on several DataNodes, and the accompanying namespace keeps the directory entries on the NameNode.
4. The file splits into sorted rows placed on several DataNodes, and the accompanying namespace keeps the directory entries on the NameNode.