Part 2B We want Raft to keep a consistent, replicated log of operations. A call to Start() at the leader starts the process of adding a new operation to the log; the leader sends the new operation to the other servers in AppendEntries RPCs.我们希望Raft保持…

6.824 Lab 2: Raft Part 2A Due: Feb 23 at 11:59pm Part 2B Due: Mar 2 at 11:59pm Part 2C Due: Mar 9 at 11:59pm Introduction This is the first in a series of labs in which you'll build a fault-tolerant key/value storage system. In this lab you'll implem…

Part 2C Do a git pull to get the latest lab software. If a Raft-based server reboots it should resume service where it left off. This requires that Raft keep persistent state that survives a reboot. The paper's Figure 2 mentions which state should be…

6.824 Lab 3: Fault-tolerant Key/Value Service Due Part A: Mar 13 23:59 Due Part B: Apr 10 23:59 Introduction In this lab you will build a fault-tolerant key/value storage service using your Raft library from lab 2. You key/value service will be a rep…

Part B: Key/value service with log compaction Do a git pull to get the latest lab software. As things stand now with your lab code, a rebooting server replays the complete Raft log in order to restore its state. However, it's not practical for a long…

概述 lab2中实现了raft协议,本lab将在raft之上实现一个可容错的k/v存储服务,第一部分是实现一个不带日志压缩的版本,第二部分是实现日志压缩.时间原因我只完成了第一部分. 设计思路 如上图,lab2实现了raft协议,本lab将实现kvserver.每个raft都关联一个kvserver,Clerks发送Put(), Append(), Get() RPC给leader服务器中的kvserver,kvserver收到请求后将操作打包成Log Entry提交给raft,然后阻塞等待ra…

Introduction In this lab you will modify YFS to cache extents, reducing the load on the extent server and improving YFS performance. The main challenge is to ensure consistency of extents cached at different yfs_clients: to make sure that each yfs_cl…

书接上文Raft Part A | MIT 6.824 Lab2A Leader Election. 实验准备 实验代码:git://g.csail.mit.edu/6.824-golabs-2021/src/raft 如何测试:go test -run 2B -race 相关论文:Raft Extended Section 5.3 Section 5.4.1 实验指导:6.824 Lab 2: Raft (mit.edu) 实验目标 在Leader Election的基础上,完成Leader和…

书接上文Raft Part C | MIT 6.824 Lab2C Persistence. 实验准备 实验代码:git://g.csail.mit.edu/6.824-golabs-2021/src/raft 如何测试:go test -run 2D -race 相关论文:Raft Extended Section 7 实验指导:6.824 Lab 2: Raft (mit.edu) 实验目标 实现Snapshot.CondInstallSnapshot.InstallSnapshot RPC…

书接上文Raft Part B | MIT 6.824 Lab2B Log Replication. 实验准备 实验代码:git://g.csail.mit.edu/6.824-golabs-2021/src/raft 如何测试:go test -run 2C -race 相关论文:Raft Extended 实验指导:6.824 Lab 2: Raft (mit.edu) 实验目标 完成persist()和readPersist()函数,编码方式参照注释. 优化nextIndex[]回退方式,…