elasticsearch issue: sort fail on not_analyzed attribute

mapping.json

{
  "UILayout": {
    "properties": {
      "id": {
        "store": "yes",
        "type": "long"
      },
      "userId": {
        "store": "yes",
        "type": "string"
      },
      "name": {
        "index": "not_analyzed",
        "store": "yes",
        "type": "string"
      },
      "key": {
        "type": "string"
      },
      "layoutType": {
        "store": "yes",
        "type": "string"
      },
      "entityName": {
        "store": "yes",
        "type": "string"
      },
      "classIdentifier": {
        "index": "not_analyzed",
        "store": "yes",
        "type": "string"
      }
    }
  }
}

sort_query

curl -XPOST -d '{"from" : 0, "size" : 15, "query":{"query_string" : {"query" : "name:new*"}},"sort" : [{"name":"asc"}]}' http://localhost:9200/system/UILayout/_search?pretty=true
{
  "took" : 28,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 2,
    "failed" : 3,
    "failures" : [ {
      "index" : "system",
      "shard" : 2,
      "status" : 500,
      "reason" : "QueryPhaseExecutionException[[system][2]: query[filtered(name:new*)->FilterCacheFilterWrapper(_type:UILayout)],from[0],size[15],sort[<custom:\"name\": org.elasticsearch.index.field.data.strings.StringFieldDataType$1@6f172517>]: Query Failed [Failed to execute main query]]; nested: IOException[Can't sort on string types with more than one value per doc, or more than one token per field]; "
    }, {
      "index" : "system",
      "shard" : 4,
      "status" : 500,
      "reason" : "QueryPhaseExecutionException[[system][4]: query[filtered(name:new*)->FilterCacheFilterWrapper(_type:UILayout)],from[0],size[15],sort[<custom:\"name\": org.elasticsearch.index.field.data.strings.StringFieldDataType$1@588441fb>]: Query Failed [Failed to execute main query]]; nested: IOException[Can't sort on string types with more than one value per doc, or more than one token per field]; "
    }, {
      "index" : "system",
      "shard" : 1,
      "status" : 500,
      "reason" : "QueryPhaseExecutionException[[system][1]: query[filtered(name:new*)->FilterCacheFilterWrapper(_type:UILayout)],from[0],size[15],sort[<custom:\"name\": org.elasticsearch.index.field.data.strings.StringFieldDataType$1@5307f323>]: Query Failed [Failed to execute main query]]; nested: IOException[Can't sort on string types with more than one value per doc, or more than one token per field]; "
    } ]
  },
  "hits" : {
    "total" : 5,
    "max_score" : null,
    "hits" : [ {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "new1",
      "_score" : null, "_source" : {"key":"new1","name":"new1","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96592},
      "sort" : [ "new1" ]
    }, {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "newC",
      "_score" : null, "_source" : {"key":"newC","name":"newC","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96604},
      "sort" : [ "newC" ]
    }, {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "newE",
      "_score" : null, "_source" : {"key":"newE","name":"newE","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96612},
      "sort" : [ "newE" ]
    }, {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "newH",
      "_score" : null, "_source" : {"key":"newH","name":"newH","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96624},
      "sort" : [ "newH" ]
    }, {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "newJ",
      "_score" : null, "_source" : {"key":"newJ","name":"newJ","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96632},
      "sort" : [ "newJ" ]
    } ]
  }
}

sortless_query

curl -XPOST -d '{"from" : 0, "size" : 10, "query":{"query_string" : {"query" : "name:new*"}}}' http://localhost:9200/system/UILayout/_search?pretty=true
{
  "took" : 57,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 13,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "new1",
      "_score" : 1.0, "_source" : {"key":"new1","name":"new1","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96592}
    }, {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "newE",
      "_score" : 1.0, "_source" : {"key":"newE","name":"newE","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96612}
    }, {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "newJ",
      "_score" : 1.0, "_source" : {"key":"newJ","name":"newJ","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96632}
    }, {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "newA",
      "_score" : 1.0, "_source" : {"key":"newA","name":"newA","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96596}
    }, {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "newF",
      "_score" : 1.0, "_source" : {"key":"newF","name":"newF","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96616}
    }, {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "newK",
      "_score" : 1.0, "_source" : {"key":"newK","name":"newK","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96636}
    }, {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "newB",
      "_score" : 1.0, "_source" : {"key":"newB","name":"newB","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96600}
    }, {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "newG",
      "_score" : 1.0, "_source" : {"key":"newG","name":"newG","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96620}
    }, {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "newL",
      "_score" : 1.0, "_source" : {"key":"newL","name":"newL","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96640}
    }, {
      "_index" : "system",
      "_type" : "UILayout",
      "_id" : "newC",
      "_score" : 1.0, "_source" : {"key":"newC","name":"newC","classIdentifier":null,"entityName":null,"layoutType":"static_widget","userId":null,"id":96604}
    } ]
  }
}