ES 0.19.0.RC3: Where's my _size? :(

gistfile1.sh

#!/usr/bin/env bash

h=localhost:9200
g='curl -XGET '
p='curl -XPOST '
u='curl -XPUT '
d='curl -XDELETE '

# make the index
$u "$h/hello"

# make the mapping, and check
$u "$h/hello/type1/_mapping" -d '{ 
    "msg": { 
        "properties": { 
            "body": { 
                "type": "string", 
                "store": "yes" 
            } 
        }, 
        "_size": { 
            "enabled": true,
            "store": "yes"
        }
    }
}'
$g "$h/hello/type1/_mapping?pretty=true"

# add some docs
$p "$h/hello/type1/1" -d '{
    "msg": "short"
}'
$p "$h/hello/type1/2" -d '{
    "msg": "longer"
}'
$p "$h/hello/type1/3" -d '{
    "msg": "really longer"
}'

# force a refresh, just in case
$p "$h/hello"

sleep 3

echo ''
echo ''
echo ''

# where's my _size? :(
$g "$h/hello/type1/1?pretty=true"
#{
#  "_index" : "hello",
#  "_type" : "type1",
#  "_id" : "1",
#  "_version" : 1,
#  "exists" : true, "_source" : {
#    "msg": "short"
#}
#}

$g "$h/hello/type1/1?pretty=true&fields=_size"
#{
#  "_index" : "hello",
#  "_type" : "type1",
#  "_id" : "1",
#  "_version" : 1,
#  "exists" : true
#}

$g "$h/hello/type1/1?fields=_size"
#{"_index":"hello","_type":"type1","_id":"1","_version":1,"exists":true}