Failure scenarios/bottlenecks

1. Metadata Server Failure (Single Point of Failure)

2. Storage Node Failure

3. Network Partition or Latency

4. Bottleneck: Metadata Server Scalability

5. Bottleneck: Small Files Problem

6. Slow or Failed Replication

7. Locking Deadlocks or Starvation

8. Corrupt Chunks or Disk Failures

9. Hotspot Files or Directories

10. Insufficient Storage Space

11. Inconsistent Metadata (Split-Brain)