MIT 6.824 - Spring 2020

• Lab1 MapReduce
• Lab2 Raft
  • Part A: Raft leader election and heartbeats
  • Part B: Append new log entries
  • Part C: Persistent state for Reboot
• Lab3 Fault-tolerant Key/Value Service
  • Part A: Key/value service without log compaction
  • Part B: Key/value service with log compaction (Snapshot)
• Lab4 Sharded Key/Value Service
  • Part A: Shard Master (Config Server)
  • Part B: Sharded Key/Value Server
  • Challenge I: Garbage collection of state
  • Challenge II: Client requests during configuration changes

GO111MODULE=off
go version go1.14.3 darwin/amd64

• Good

  Lab 1-4 tested for 1000 times without any error.

• Bad

  Current implementation of Raft did not implement no-op entry, which may be a potential problem.