以太坊核心开发者最新会议摘要:Pectra修复与筹备、PeerDAS进展

marsbitPublished on 2024-08-08Last updated on 2024-08-09

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以太坊所有核心开发者共识电话(ACDC)是每两周举行一次的系列会议,专注于讨论和协调以太坊共识层(CL),也就是信标链的变更。第 139 次 ACDC 电话会议由以太坊基金会(EF)研究员 Alex Stokes 主持,会议内容涵盖了 Pectra Devnet 2 的修复、Devnet 3 的准备、PeerDAS 实施进展以及以太坊节点分布的新数据。
在会议期间,开发者们审议了 Pectra Devnet 2 的稳定性和存在的问题,讨论了即将到来的 Devnet 3 的准备工作,并就 PeerDAS 的实施进展进行了深入探讨。此外,EIP 7688 的提案也引起了与会者的广泛讨论,这一提案旨在引入一种向前兼容的数据结构,以支持以太坊数据序列化方法的潜在变更。Galaxy Digital 研究副总裁 Christine Kim 对本次会议进行了详细记录,BlockBeats 将原文编译如下:

2024 年 8 月 8 日,以太坊开发者们通过 Zoom 举行了第 139 次核心开发者共识电话会议(ACDC)。ACDC 电话会议是每两周举行一次的系列会议,开发者们在此讨论并协调对以太坊共识层(CL),也称为信标链的变更。本周的电话会议由以太坊基金会(EF)研究员 Alex Stokes 主持。开发者们讨论了 Pectra Devnet 2 的修复、Devnet 3 的准备、PeerDAS 实施进展以及以太坊节点分布的新数据。

Pectra 更新

Stokes 宣布,EF 的研究员 Hsiao Wei Wang 即将推出 Pectra 共识层(CL)规范的官方更新版本alpha.4,该版本包含了对前一版的多项改进,并计划在近期发布。

关于 Pectra Devnet 2 的话题,EF 开发者运营工程师 Barnabas Busa 表示,网络稳定,并已达到 85% 的网络参与度。在执行层(EL)客户端中还有一些需要解决的小问题,主要是 EthereumJS 和 Erigon。大多数 CL 客户端在 Devnet 2 上是稳定的。然而,Busa 提到了 Prysm 客户端需要进一步调查的小问题。EF DevOps 工程师 Parithosh Jayanthi 补充说,还需要客户端团队调查 Lighthouse、Teku 和 Besu 节点之间的问题。

随后,开发者们讨论了如何改善 devnet 启动的通讯流程。Prysm 的开发者 Kasey Kirkham 在 Zoom 聊天中指出了自己对 Devnet 2 启动时间的不知晓。为确保 Devnet 3 的启动信息能准确传达给所有客户端团队,开发者们决定设立一个定期的周会议,用于更新 Pectra 的测试进展。尽管具体时间尚未确定,但这些会议预计将在每周一举行,类似于 Dencun 升级前的测试电话会议。Jayanthi 提出,这些会议将简短高效,时长控制在 15 至 30 分钟之间,专注于讨论 Pectra 相关的 devnet 测试更新,涵盖 PeerDAS 和 EOF devnets 等议题。

在讨论 Pectra Devnet 3 的议题时,开发者们重申了它将沿用与 Devnet 2 一致的 EIP 配置。此外,Devnet 3 将首次集成最新设计的 EIP 7702,团队将对其进行细致的测试,以确保其与 Pectra 核心 EIPs 的兼容性。Lodestar 团队的 Gajinder Singh 提到,在 Devnet 2 中发现的 EIP 7251,即 MaxEB 提案中的问题,尽管已经进行了调试,但仍需在接下来的 Pectra devnet 上进行更深入的测试以验证解决方案。

正如在ACDE #193上讨论的,有一个新的 Engine API 规范,它允许 CL 客户端从 EL blob 交易内存池中获取 blobs。该方法称为「getBlobsV1」。为了避免滥用,Teku 开发者 Enrico del Fante 提出了一些对 CL 规范的澄清。Stokes 建议开发者们审查这些澄清,并计划在 Pectra Devnet 3 上测试这种方法的使用。

开发者们就mplex协议的弃用进行了讨论。Mplex 曾是 CL 客户端用于单一通信链接多数据流传输的协议,但目前已遭其维护者废弃。客户端团队正计划转向如 yamux 这样的新型数据流复用技术。Lodestar 的 Phil Ngo 宣布,他们已完成yamux的集成和测试工作,并倾向于直接过渡到新协议,而非长期维护两个协议,因为这将增加客户端的运营成本。Nimbus 的 Etan Kissling 也透露,他们团队正在对 yamux 进行测试。开发者们达成共识,将继续关注其他 CL 客户端团队在协议过渡方面的进展,并计划在未来几个月内再次评估从 mplex 到新复用器的迁移策略。

Etan Kissling 在 Pectra 议题上提出了关于EIP 7688的讨论,该提案旨在引入一种向前兼容的数据结构,以便智能合约开发者能够在以太坊执行层(EL)的数据序列化方法从 RLP 过渡到 SSZ 时继续使用。尽管 Pectra 升级本身不会完全实现 SSZ,但 EIP 7688 的提出是为了确保 Pectra EIPs 在数据变更方面的前向兼容性。

Alex Stokes 对于在 Pectra 升级中加入 EIP 7688 持谨慎态度,认为升级规模已经相当庞大。Parithosh Jayanthi 在会议中提到,EIP 7688 最早可能在 Devnet 5 中进行测试。Lodestar、Prysm、Teku 和 Lighthouse 等团队的代表对此提案表示支持。Stokes 和 Beiko 建议,在所有现有 Pectra EIPs 达到稳定状态之前,应避免向 Pectra 添加新的 EIPs。Kissling 接受了这一建议,并询问了何时重新讨论此议题的最佳时机。尽管没有得到具体答复,但团队普遍认为应在 Pectra Devnet 5 启动前对 EIP 7688 进行再次评估。

PeerDAS 更新

Prysm 客户端团队的代表在会议上汇报了他们关于 PeerDAS 实施的最新进展,并引发了对"blobsidecar" Engine API 请求必要性的讨论。Alex Stokes 建议在下一次 PeerDAS 小组会议中深入讨论 PeerDAS 对 Engine API 所需进行的调整。他同时指出,一位 EF 研究员已经草拟了正式规范,提议从 PeerDAS 中移除抽样机制,目的是降低升级过程的复杂度。然而,在最近一次的 PeerDAS 小组会议上,与会者担心此举可能会增加未来通过硬分叉重新引入抽样的难度。此外,抽样机制的移除对 Pectra 中 blob gas limit 安全增加的影响尚不明确。一项提议将执行层(EL)和共识层(CL)中的 blob gas limit 解耦的提案,EIP 7742,在本周的电话会议上再次被提出。Stokes 表示他将更新该 EIP,并计划在下一次的 CL 电话会议上讨论其纳入的可能性,以及与 Pectra 中 blob gas limit 调整相关的议题。

研究更新

在本周的电话会议中,开发者们集中讨论了三项研究议题。首先,他们探讨了 EIP 7251 下,验证者在合并质押 ETH 余额时可能遇到的边缘情况。Etan Kissling 提出,验证者余额在合并期间可能长时间未更新,这可能导致协议错误地分配同步委员会职责。对此,Alex Stokes 回应称,这一问题与协议处理验证者退出的情况相似,并建议在共识层(CL)规范中记录这一边缘情况,而不改变现有合并设计。

然后,开发者们讨论了以太坊网络层的变更,特别是引入了「quic ENR entry」。Quic 代表快速 UDP 互联网连接,它帮助节点发送和接收数据。Stokes 建议在 GitHub 上创建一个拉取请求(PR),以进一步详细说明 quic ENR entry 的具体变更。

最后,ProbeLab 分享了他们对以太坊网络的节点运行情况的持续分析。报告显示,目前有 8335 个节点在以太坊网络上运行,其中 42% 使用的是 Lighthouse 客户端。在美国运营的节点占总数的 36%,且约一半的节点部署在数据中心。Prysm 的开发者「Potuz」对于数据中心托管的 Lighthouse 节点数量超过自托管节点的现象表示好奇。Stokes 推测,这可能是因为 Lighthouse 客户端的主要用户群体包括机构和专业的节点运营商。

在会议的尾声,Potuz 敦促团队审查他所提交的关于调整执行有效载荷结构的 PR。该提案在上一届 ACDC 电话会议中首次被提出。Potuz 强调了迅速决策的重要性,指出尽管这些变更在概念上简单易懂,但要将它们整合进共识层(Consensus Layer, CL)规范却颇具挑战。他建议开发者们尽早着手这一工作。


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