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[[mapping-size-field]]
=== `_size`
The `_size` field allows to automatically index the size of the original
`_source` indexed. By default, it's disabled. In order to enable it, set
the mapping to:
[source,js]
--------------------------------------------------
{
"tweet" : {
"_size" : {"enabled" : true}
}
}
--------------------------------------------------
In order to also store it, use:
[source,js]
--------------------------------------------------
{
"tweet" : {
"_size" : {"enabled" : true, "store" : true }
}
}
--------------------------------------------------
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