proxy can not start when use etcd

[blueseason]

2015/10/19 17:01:17 proxy.go:120: [INFO] proxy is serving
2015/10/19 17:01:17 proxy.go:447: [INFO] got event proxy_1, {EventNodeChildrenChanged StateConnected /zk/codis/db_test/actions/00000000000000006167 }, lastActionSeq -1
2015/10/19 17:01:17 proxy.go:344: [PANIC] action failed, seq = 10
[error]: zk: node does not exist
6 /home/season/gowork/src/github.com/wandoulabs/codis/pkg/models/action.go:58
github.com/wandoulabs/codis/pkg/models.GetActionWithSeq
5 /home/season/gowork/src/github.com/wandoulabs/codis/pkg/proxy/topology.go:81
github.com/wandoulabs/codis/pkg/proxy.(_Topology).GetActionWithSeq
4 /home/season/gowork/src/github.com/wandoulabs/codis/pkg/proxy/proxy.go:342
github.com/wandoulabs/codis/pkg/proxy.(_Server).checkAndDoTopoChange
3 /home/season/gowork/src/github.com/wandoulabs/codis/pkg/proxy/proxy.go:427
github.com/wandoulabs/codis/pkg/proxy.(_Server).processAction
2 /home/season/gowork/src/github.com/wandoulabs/codis/pkg/proxy/proxy.go:459
github.com/wandoulabs/codis/pkg/proxy.(_Server).loopEvents
1 /home/season/gowork/src/github.com/wandoulabs/codis/pkg/proxy/proxy.go:126
github.com/wandoulabs/codis/pkg/proxy.(_Server).serve
0 /home/season/gowork/src/github.com/wandoulabs/codis/pkg/proxy/proxy.go:85
github.com/wandoulabs/codis/pkg/proxy.New.func1
... ...
[stack]:
4 /home/season/gowork/src/github.com/wandoulabs/codis/pkg/proxy/proxy.go:344
github.com/wandoulabs/codis/pkg/proxy.(_Server).checkAndDoTopoChange
3 /home/season/gowork/src/github.com/wandoulabs/codis/pkg/proxy/proxy.go:427
github.com/wandoulabs/codis/pkg/proxy.(_Server).processAction
2 /home/season/gowork/src/github.com/wandoulabs/codis/pkg/proxy/proxy.go:459
github.com/wandoulabs/codis/pkg/proxy.(_Server).loopEvents
1 /home/season/gowork/src/github.com/wandoulabs/codis/pkg/proxy/proxy.go:126
github.com/wandoulabs/codis/pkg/proxy.(*Server).serve
0 /home/season/gowork/src/github.com/wandoulabs/codis/pkg/proxy/proxy.go:85
github.com/wandoulabs/codis/pkg/proxy.New.func1

[yangzhe1991]

看上去是因为节点名前面补了一堆0导致的……00000000000000006167会被当成6167然后取不到 /zk/codis/db_test/actions/6167，似乎是因为etcd和zk行为不一致……我看看咋搞

[yangzhe1991]

懂了，etcd-io/etcd@a7b9bff 从这个版本开始，In-Order Keys自动生成的key补了一堆0……

[yangzhe1991]

因为是从2.2开始变成20位的，老版还是没有补0的，所以你可以先自己改本地的https://github.com/wandoulabs/zkhelper/blob/master/etcd.go#L32 这个代码，本地路径应该是$GOPATH/wandoulabs/zkhelper/blob/master/etcd.go 把%d改成%020d然后再编译……长期来看因为未来的版本会拿掉zk/etcd的依赖，就暂时不准备做大幅度修改以应对这个问题了……

[blueseason]

可以工作了，谢谢，建议还是改一下，以免新手同样碰到，改动也不太:-)

[yangzhe1991]

改动不会很小，因为得判断是旧版的etcd还是新版的，搞成可配置的或者自行判断，不是说直接加%020d就行的……