One particular value in a field isn't indexed

[felix . kofink]

Hi,

this might be a rookie problem since I'm very new to elasticsearch.

I'm trying to put JSON documents into elasticsearch with a field "lang". 
However if "lang" is set to "it" elasticsearch doesn't seem to recognize 
the field since it's only returned when I filter for missing fields.
The problem can be recreated very simple:

curl -XPUT 'http://localhost:9200/test/test/1' -d '{"lang":"de"}'
curl -XPUT 'http://localhost:9200/test/test/2' -d '{"lang":"it"}'

If I try to search for lang:de:
curl -XGET http://s445.gfsrv.net:9200/test/test/_search?pretty -d 
'                                                               
{
  "query": {
    "query_string": {
      "query": "lang:de"
    }
}

I get a result:
{
  "took" : 2,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 1,
    "max_score" : 0.30685282,
    "hits" : [ {
      "_index" : "test",
      "_type" : "test",
      "_id" : "1",
      "_score" : 0.30685282, "_source" : {"lang":"de"}
    } ]
  }
}

However if I search for lang:it:
curl -XGET http://s445.gfsrv.net:9200/test/test/_search?pretty -d '
{
  "query": {
    "query_string": {
      "query": "lang:it"
    }
}
}'

There is no result:
{
  "took" : 1,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 0,
    "max_score" : null,
    "hits" : [ ]
  }
}

If I search for missing field lang:
curl -XGET http://s445.gfsrv.net:9200/test2/test/_search?pretty -d 
'{"query":{"filtered":{"filter":{"missing":{"field":"lang"}}}}}'

There it is:
{
  "took" : 1,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 1,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "test2",
      "_type" : "test",
      "_id" : "2",
      "_score" : 1.0, "_source" : {"lang":"it"}
    } ]
  }
}

Thanks for your time and any help would be appreciated.

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