feature request: allow creating nodes and directories with the same name

[glerchundi]

As i mentioned some weeks ago (#1301), I would like to have the possibility to create nodes and directories with the same at the same path. This is motivated by this project: https://github.com/glerchundi/parkeeper.

[xiang90]

we accepted this feature request. we will implement this in the v3 api.

/cc @barakmich @kelseyhightower

[glerchundi]

perfect, thanks!

[coquin]

I tried to reproduce this issue but I couldn't:

1. Create a directory dir:

   curl http://127.0.0.1:2379/v2/keys/dir -XPUT -d dir=true
   
   => {
       "action": "set",
       "node": {
           "createdIndex": 1,
           "dir": true,
           "key": "/dir",
           "modifiedIndex": 1
       }
   }
   

2. Add a node dir to this directory:

   curl http://127.0.0.1:2379/v2/keys/dir/dir -XPUT -d value=bar
   
   => {
       "action": "set",
       "node": {
           "createdIndex": 2,
           "key": "/dir/dir",
           "modifiedIndex": 2,
           "value": "bar"
       }
   }
   

It works. And if I list dir directory contents it returns this dir node without any errors.

@glerchundi, could you, please, confirm that it works for you too or clarify your case (step to reproduce and/or a bit more info about this feature request)?

[glerchundi]

@coquin, i want to be able to create a node alongside the folder (with the same name), not inside it, this shouldn't work:

curl http://127.0.0.1:2379/v2/keys/dir -XPUT -d dir=true
curl http://127.0.0.1:2379/v2/keys/dir -XPUT -d value=bar

[yichengq]

@xiang90 Do we want to support this in v2? A unix file system doesn't support to set value to dir, but zookeeper seems to support that.

[xiang90]

@glerchundi Please take a look at the v3 api under /doc/rfc. Thanks!