in GET v2/entities with the "mq" query param fails randomly if we use a vector in "metadata values"

[iariasleon]

in GET v2/entities with the "mq" query param fails randomly if we use a vector in "metadata values". In execution of tests in group, if the test is executed alone never fails. The problem is probably in the stack.

Entity request

url: POST http://localhost:1026/v2/entities
headers:
    Content-Type: application/json
    Fiware-Service: s01901pep2cbv2
    Fiware-ServicePath: /ssp1
payload: {"type": "t96C", "id": "room1",  "temperature":{"type": "celsius", "metadata": {"very_cold": {"value": ["one","two","three"], "type": "alarm"}}, "value": 45}}

GET request

url: GET http://localhost:1026/v2/entities?mq=temperature.very_cold==one&options=count
headers:
    Fiware-Service: s01901pep2cbv2
    Fiware-ServicePath: /ssp1

GET response

`http code: 200 - OK
headers:
   content-length: 136
   fiware-total-count: 1
   server: nginx
   fiware-correlator: f2b421ba-5fad-11e6-b8d3-fa163e026cb4
   connection: keep-alive
   date: Thu, 11 Aug 2016 10:25:38 GMT
   content-type: application/json
payload: [{"id":"room1","type":"t96C","temperature":{"type":"celsius","value":45,"metadata":{"very_cold":{"type":"alarm","one","two","three"}}}}]

expected response

http code: 200 - OK
payload: [{"id":"room1","type":"nQIa","temperature":{"type":"celsius","value":45,"metadata":{"very_cold":{"type":"alarm","value":["one","two","three"]}}}}]

[kzangeli]

Might be an uninitialized variable ...

[kzangeli]

I've seen and fixed a similar bug in recent branches, still not in develop.
[ might have thrown away that modification when rolling back the branch for #2223 ]
However, I would wait with this issue to see if it still falis once th PR for #2223 is merged.

[fgalan]

New functest added in PR #2475 but it seems that the bug has been previously fixed in some other PR.

@iariasleon please have a look and close if you find this ok.

[iariasleon]

Tested in Component environment and the failure does not ocurr, I would like to test on INT environment where was detected.

CB installed in component:

  "version" : "1.2.0-next"
  "git_hash" : "208dbd7d4d3cda50dd6688b93a945328fb775f6b",

[iariasleon]

LGTM
Tested on INT environment and the failure is not detected