HDFS - System Design | What is HDFS | HDFS Architecture

In this video, we're going to reveal about HDFS (Hadoop File system) used in System Design:
HDFS:
- HDFS stores large files across multiple machines.
- It achieves reliability by replicating the data across multiple hosts.
- With the replication value 3, data is stored on three nodes: two on same rack & one on different rack.
Data nodes can talk to each other to rebalance data, to move copies around to keep replication data high.
- HDFS is highly fault-tolerant and is designed to be deployed on low-cost hardware.

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