[0.9.2] cluster replication issue for measurement name containing backslash

[beckettsean]

From a note sent to the support team, recreating it here:

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I am running on 3 nodes CENTOS 6.6 and i have created InfluxDB Cluster Configuration as very well exaplined in docs section. (i have installed InfluxDB 0.9.2 on all 3 nodes).

On the first node i created a database with: create database mydb which appeared on the other 3 nodes. I have inserted a measurement called cpu_load which also appeared on the other 3 nodes. All good and working as expected until now.

I have inserted another measurement called "cpu time" using the following line command: insert cpu\ time,hostname=server01 value=100. On this node i could succesfully query it and i had the following results:

> show series
name: cpu time
--------------
_key hostname
cpu\ time,hostname=server01 server01

Now when i tried to query it on the other nodes, i got a slightly different result:(pay attention to _key):

On 2nd and 3rd node:

> show series
name: cpu time
--------------
_key hostname
cpu\\ time,hostname=server01 server01

So my guess is that when we insert measurements containing spaces, the replication is not working very well - it seems to add one more backslash to measurement _key on the other nodes.

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There are two bugs here: one is that the backslash gets duplicated when copied to the other nodes. The second is that the insert statement should never have created a measurement name with a backslash, it should have preserved the space. The second bug is fixed in 0.9.3 I believe, but the first is likely still valid.