Agg query_cache not working with date filter

query_cache_test.sh

#!/bin/sh

echo "Remove old index..."
curl -XDELETE "http://localhost:9200/fml?pretty=true"

echo "Make index and add some data - default mappings are fine"
curl -XPOST "http://localhost:9200/fml/widget/?pretty=true" -d '
{
   "name": "uno",
   "postDate" : "2009-11-15"
}
'
curl -XPOST "http://localhost:9200/fml/widget/?pretty=true" -d '
{
   "name": "dos",
   "postDate" : "2010-11-15"
}
'
curl -XPOST "http://localhost:9200/fml/widget/?pretty=true" -d '
{
   "name": "tres",
   "postDate" : "201-11-15"
}
'

echo "Wait for ES to be synced (aka refresh indices)..."
curl -XPOST "http://localhost:9200/fml/_refresh?pretty=true"

echo "Enable query cache by default"
curl -XPUT localhost:9200/fml/_settings -d'{ "index.cache.query.enable": true }'

echo "Show settings: verify query cache enabled"
curl -GET localhost:9200/fml/_settings?pretty

echo "Verify empty cache..."
curl 'localhost:9200/_stats/query_cache?pretty&human'

# echo "simple cached agg..."
#curl -XPOST "http://localhost:9200/fml/widget/_search?pretty=true&search_type=count&query_cache=true" -d '
#{
#    "aggregations": {
#        "names": {
#            "terms": {
#                "field": "name"
#            }
#        }
#    }
#}
#'

# echo "cached, internally filtered agg..."
#curl -XPOST "http://localhost:9200/fml/widget/_search?pretty=true&search_type=count&query_cache=true" -d '
#{
#    "aggregations": {
#        "with_filter": {
#            "filter": {
#                "bool": {
#                    "must_not": [
#                        {
#                            "terms": {
#                                "name": [ "tres" ]
#                            }
#                        }
#                    ]
#                }
#            },
#            "aggregations": {
#                "names": {
#                    "terms": {
#                        "field": "name"
#                    }
#                }
#            }
#        }
#    }
#}
#'

#echo "query-filtered, cached agg..."
#curl -XPOST "http://localhost:9200/fml/widget/_search?pretty=true&search_type=count&query_cache=true" -d '
#{
#    "query": {
#        "filtered": {
#            "filter": {
#                "bool": {
#                    "must_not": [
#                        {
#                            "terms": {
#                                "name": [ "tres" ]
#                            }
#                        }
#                    ]
#                }
#            }
#        }
#    },
#    "aggregations": {
#        "names": {
#            "terms": {
#                "field": "name"
#            }
#        }
#    },
#    "facets": {
#        "case_tags": {
#            "terms": {
#                "field": "name"
#            }
#        }
#    }
#}
#'

echo "internal date range filtered agg..."
# caching doesn't work with internal date range filter agg
curl -XPOST "http://localhost:9200/fml/widget/_search?pretty=true&search_type=count&query_cache=true" -d '
{
  "aggregations": {
    "with_filter": {
      "filter": {
        "bool": {
          "_cache": true,
          "must": [
            {
              "range": {
                "_cache": true,
                "postDate": {
                  "gte": "2009-11-15",
                  "lte": "2010-11-16"
                }
              }
            }
          ]
        }
      },
      "aggregations": {
        "names": {
          "terms": {
            "field": "name"
          }
        }
      }
    }
  }
}
'

#echo "minimal date query-filtered, cached agg..."
## caching doesn't work with date range filter in query
#curl -XPOST "http://localhost:9200/fml/widget/_search?pretty=true&search_type=count&query_cache=true" -d '
#{
#  "query": {
#    "filtered": {
#      "filter": {
#        "bool": {
#          "_cache": true,
#          "must": [
#            {
#              "range": {
#                "_cache": true,
#                "postDate": {
#                  "gte": "2009-11-15",
#                  "lte": "2010-11-16"
#                }
#              }
#            }
#          ]
#        }
#      }
#    }
#  },
#  "aggregations": {
#    "names": {
#      "terms": {
#        "field": "name"
#      }
#    }
#  }
#}
#'

echo "Verify non-empty cache..."
curl 'localhost:9200/_stats/query_cache?pretty&human'

#echo "Clear cache..."
#curl -XPOST 'localhost:9200/_cache/clear?query_cache=true'