Bug: _mlt on a document does not route properly on node clients

1 - curl on data node

Thu 11:54:32 madlep@elastic1 ~
$ curl -XPUT 'http://localhost:9200/foo/bar/1' -d '{"foo":{"bar":"boz"}}'
{"ok":true,"_index":"foo","_type":"bar","_id":"1","_version":1}

Thu 11:56:21 madlep@elastic1 ~
$ curl -v "http://localhost:9200/foo/bar/1"
* About to connect() to localhost port 9200 (#0)
*   Trying ::1... connected
* Connected to localhost (::1) port 9200 (#0)
> GET /foo/bar/1 HTTP/1.1
> User-Agent: curl/7.19.7 (x86_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15
> Host: localhost:9200
> Accept: */*
> 
< HTTP/1.1 200 OK
< Content-Type: application/json; charset=UTF-8
< Content-Length: 102
< 
* Connection #0 to host localhost left intact
* Closing connection #0
{"_index":"foo","_type":"bar","_id":"1","_version":1,"exists":true, "_source" : {"foo":{"bar":"boz"}}}

Thu 11:56:52 madlep@elastic1 ~
$ curl -v "http://localhost:9200/foo/bar/1/_mlt"
* About to connect() to localhost port 9200 (#0)
*   Trying ::1... connected
* Connected to localhost (::1) port 9200 (#0)
> GET /foo/bar/1/_mlt HTTP/1.1
> User-Agent: curl/7.19.7 (x86_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15
> Host: localhost:9200
> Accept: */*
> 
< HTTP/1.1 200 OK
< Content-Type: application/json; charset=UTF-8
< Content-Length: 124
< 
* Connection #0 to host localhost left intact
* Closing connection #0
{"took":5,"timed_out":false,"_shards":{"total":12,"successful":12,"failed":0},"hits":{"total":0,"max_score":null,"hits":[]}}

2 - curl on client node

Thu 11:59:00 madlep@web1 ~
$ curl -v "http://localhost:9200/foo/bar/1"
* About to connect() to localhost port 9200 (#0)
*   Trying ::1... connected
* Connected to localhost (::1) port 9200 (#0)
> GET /foo/bar/1 HTTP/1.1
> User-Agent: curl/7.19.7 (x86_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15
> Host: localhost:9200
> Accept: */*
> 
< HTTP/1.1 200 OK
< Content-Type: application/json; charset=UTF-8
< Content-Length: 102
< 
* Connection #0 to host localhost left intact
* Closing connection #0
{"_index":"foo","_type":"bar","_id":"1","_version":1,"exists":true, "_source" : {"foo":{"bar":"boz"}}}

Thu 11:59:03 madlep@web1 ~
$ curl -v "http://localhost:9200/foo/bar/1/_mlt"
* About to connect() to localhost port 9200 (#0)
*   Trying ::1... connected
* Connected to localhost (::1) port 9200 (#0)
> GET /foo/bar/1/_mlt HTTP/1.1
> User-Agent: curl/7.19.7 (x86_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15
> Host: localhost:9200
> Accept: */*
> 
< HTTP/1.1 404 Not Found
< Content-Type: application/json; charset=UTF-8
< Content-Length: 61
< 
* Connection #0 to host localhost left intact
* Closing connection #0
{"error":"IndexMissingException[[foo] missing]","status":404}