问题标签 [quorum]

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133 问题

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1 回答

313 浏览

blockchain - What contract is used in Istanbul consensus mechanism in JP Morgan Quorum?

In "7nodes" installation example from JPMorgan Quorum github is used such a genesis file ("istanbul-genesus.json"):

}

So, this genesis file, obviously, contains contract binary code at address 0x00...0020.

But what is the source code of this contract?

I have read, that in old versions of Quorum this contract was the voting contract of QuorumChain consensus algorithm. In latest version they removed QuorumChain and added Istanbul BFT consensus. So it is new contract.

And you can not find its source code in the Quorum sources. There are no contracts similar to this one (even by size) in the sources.

I decompiled this contract in EVM mnemocode, but original sources will be more helpfull.

P.S.

I asked for this question Quorum team (by their contact email) - they didn't respond.

0 投票

1 回答

232 浏览

elasticsearch - 为什么 Elasticsearch 允许我在无法满足仲裁要求的单节点集群中索引文档？

来自https://www.elastic.co/guide/en/elasticsearch/guide/2.x/distrib-write.html：

请注意，number_of_replicas 是索引设置中指定的副本数，而不是当前活动的副本数。如果您已指定索引应具有三个副本，则仲裁将如下所示：

int( (主 + 3 个副本) / 2 ) + 1 = 3

但是如果你只启动两个节点，将没有足够的活动分片副本来满足法定人数，你将无法索引或删除任何文档。

我在单节点集群上运行了以下命令，即使上面的数学表明我不应该能够索引文档，我也能够成功地索引文档。

这是输出：

即使我已将索引配置为具有 3 个副本分片并且数学表明我必须至少有 3 个节点，我如何能够仅使用 1 个节点来索引文档？

elasticsearch indexing quorum

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1 回答

121 浏览

quorum - 为什么 quoum 7 节点示例为每个节点创建创世块

我尝试了 Quorum 7 节点示例，它运行完美。但我发现./raft-init.sh正在为每个节点编写运行创世块。

代码：

如您所见Writing genesis block，正在为每个节点完成。那么每个节点都有自己的区块链吗？7 个节点的例子不是应该展示 7 个具有不同“职责”的不同节点如何共存并与一个区块链一起运行吗？

quorum

0 投票

1 回答

419 浏览

blockchain - 仲裁区块链安装错误

安装仲裁时出错

github.com/ethereum/go-ethereum/crypto/secp256k1 exec：“gcc”：在 $PATH github.com/ethereum/go-ethereum/vendor/github.com/karalabe/hid # github.com/ 中找不到可执行文件ethereum/go-ethereum/vendor/github.com/karalabe/hid exec：“gcc”：在 $PATH util.go:44 中找不到可执行文件：退出状态 2 退出状态 1 Makefile：25：目标“所有”的配方制作失败：*** [全部] 错误 1

blockchain quorum

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1 回答

905 浏览

docker - How to recover a node in quorum?

I have set up a three-node quorum network using docker and if my network crashes, and I only have information of one of the node. Do I want to recover that node using binary? also, the blocks in the new network should be in sync with others. Please guide how is it possible?

docker quorum

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482 浏览