how can zookeeper cli create an empty node?

Question

The create command:

create [-s] [-e] path data 

Unspecified the data field while creating node. It is possible using ZooInspector

Answer 1

I have used the following command: create /test "".

Get command on zkCli results:

[zk: localhost:2181(CONNECTED) 14] get /test

cZxid = 0x4
ctime = Fri Sep 07 09:38:31 IRDT 2018
mZxid = 0x4
mtime = Fri Sep 07 09:38:31 IRDT 2018
pZxid = 0x4
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 0
numChildren = 0

Finally, I download the zooInspector to check how it works and I create two znodes: fromcli and fromInspector. Accordingly, results are presented:

[zk: localhost:2181(CONNECTED) 20] ls /
[fromInspector, zookeeper, fromcli]
[zk: localhost:2181(CONNECTED) 21] get /fromcli

cZxid = 0x23
ctime = Fri Sep 07 11:11:39 IRDT 2018
mZxid = 0x23
mtime = Fri Sep 07 11:11:39 IRDT 2018
pZxid = 0x23
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 0
numChildren = 0
[zk: localhost:2181(CONNECTED) 22] get /fromInspector

cZxid = 0x24
ctime = Fri Sep 07 11:12:01 IRDT 2018
mZxid = 0x24
mtime = Fri Sep 07 11:12:01 IRDT 2018
pZxid = 0x24
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 0
numChildren = 0