test-missing-aggr-es2.3.sh

#!/bin/sh

# Create an index with a single nested field "foo"
curl -XPOST localhost:9200/testmissing -d '{
  "settings": {
    "number_of_shards": 1
  },
  "mappings": {
    "test1": {
      "properties": {
        "foo": {
          "type": "nested",
          "dynamic": "false",
          "properties": {
            "k": {
              "type": "string"
            },
            "v": {
              "type": "string"
            }
          }
        }
      }
    }
  }
}'

# Add a single document with a "foo"
curl -XPUT -d '{"foo": {"k": "k1", "v": "v1"}}' localhost:9200/testmissing/test1/doc1

# Search and do a Missing aggregation on foo
curl -XPOST -d '{"aggs": {"foomissing": {"missing": {"field": "foo"} } } }' localhost:9200/testmissing/_search?pretty

# Output:
# {
#   "took" : 1,
#   "timed_out" : false,
#   "_shards" : {
#     "total" : 1,
#     "successful" : 1,
#     "failed" : 0
#   },
#   "hits" : {
#     "total" : 1,
#     "max_score" : 1.0,
#     "hits" : [ {
#       "_index" : "testmissing",
#       "_type" : "test1",
#       "_id" : "doc1",
#       "_score" : 1.0,
#       "_source" : {
#         "foo" : {
#           "k" : "k1",
#           "v" : "v1"
#         }
#       }
#     } ]
#   },
#   "aggregations" : {
#     "foomissing" : {
#       "doc_count" : 1
#     }
#   }
# }

# Why does foomissing=1 when foo is clearly present?