upgrade module : design doc and the framework codes#46
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wukongcheng merged 1 commit intoirisnet:feature/software-upgradefrom Jul 25, 2018
wukongcheng:silei/software-upgrade
Merged
upgrade module : design doc and the framework codes#46wukongcheng merged 1 commit intoirisnet:feature/software-upgradefrom wukongcheng:silei/software-upgrade
wukongcheng merged 1 commit intoirisnet:feature/software-upgradefrom
wukongcheng:silei/software-upgrade
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HaoyangLiu
reviewed
Jul 25, 2018
| * switch的投票将在约定高度进行检查，需要95%的Voting Power才视为投票通过 | ||
| * switch通过后开启切换流程： | ||
| 1. check_tx全部返回fail，以拒绝新tx的处理 | ||
| 2. 处理mempool中留存的tx，直到生成一个empty block |
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一个empty block可能有点少，只有一个空块只能说明这个块对应的proposal 节点的memory pool里面是空的，建议等多个empty block
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社区会公告在第多少高度进行版本升级，提醒届时会终止服务，不要在升级时间段内发交易。所以这里算是一个防御检查，保守一点可以先等两个空块，后续压测发现不足的话再调整。
HaoyangLiu
reviewed
Jul 25, 2018
| 2. 处理mempool中留存的tx，直到生成一个empty block | ||
| 3. 配置新版本的路由开关，并打开check_tx接受新tx | ||
| * 发生老版本AppHash冲突，检查自己是否在switch voter list中，否则reset rootMultiStore到上一个commit，并下载新版本开始同步block | ||
| * 新增Module的升级方式（现有Module逻辑修改也通过新Module完成），新老版本的Module共享同一个store，对于查询需要路由到相应版本的Module |
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从iris角度看，查询操作就是直接访问store，然后返回value和proof，具体字段的解析逻辑都是iriscli里面，所以iris本身不需要对查询操作做特殊处理，可能需要在iriscli里面做改动
HaoyangLiu
reviewed
Jul 25, 2018
| @@ -0,0 +1,32 @@ | |||
| package upgrade | |||
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这个switch msg应该是中交易吧，那发起这个交易的应该是轻客户端做的吧，是不是要求一定要 validator owner的签名
wukongcheng
commented
Jul 25, 2018
| 1. check_tx全部返回fail，以拒绝新tx的处理 | ||
| 2. 处理mempool中留存的tx，直到生成一个empty block | ||
| 3. 配置新版本的路由开关，并打开check_tx接受新tx | ||
| * 发生老版本AppHash冲突，检查自己是否在switch voter list中，否则reset rootMultiStore到上一个commit，并下载新版本开始同步block |
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回滚是应该的，但是之前只考虑了App中store当前版本的回滚，目前讨论下来还需要用新版本软件对自己tendermint node中的last block进行replay，否则还是会有AppHash冲突
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upgrade module : design doc and the framework codes
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…-tokens feat: take rate does not result in zero tokens
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