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[[ignore-malformed]]
=== `ignore_malformed`
Sometimes you don't have much control over the data that you receive. One
user may send a `login` field that is a <<date,`date`>>, and another sends a
`login` field that is an email address.
Trying to index the wrong datatype into a field throws an exception by
default, and rejects the whole document. The `ignore_malformed` parameter, if
set to `true`, allows the exception to be ignored. The malformed field is not
indexed, but other fields in the document are processed normally.
For example:
[source,js]
--------------------------------------------------
PUT my_index
{
"mappings": {
"my_type": {
"properties": {
"number_one": {
"type": "integer",
"ignore_malformed": true
},
"number_two": {
"type": "integer"
}
}
}
}
}
PUT my_index/my_type/1
{
"text": "Some text value",
"number_one": "foo" <1>
}
PUT my_index/my_type/2
{
"text": "Some text value",
"number_two": "foo" <2>
}
--------------------------------------------------
// CONSOLE
// TEST[catch:request]
<1> This document will have the `text` field indexed, but not the `number_one` field.
<2> This document will be rejected because `number_two` does not allow malformed values.
TIP: The `ignore_malformed` setting is allowed to have different settings for
fields of the same name in the same index. Its value can be updated on
existing fields using the <<indices-put-mapping,PUT mapping API>>.
[[ignore-malformed-setting]]
==== Index-level default
The `index.mapping.ignore_malformed` setting can be set on the index level to
allow to ignore malformed content globally across all mapping types.
[source,js]
--------------------------------------------------
PUT my_index
{
"settings": {
"index.mapping.ignore_malformed": true <1>
},
"mappings": {
"my_type": {
"properties": {
"number_one": { <1>
"type": "byte"
},
"number_two": {
"type": "integer",
"ignore_malformed": false <2>
}
}
}
}
}
--------------------------------------------------
// CONSOLE
<1> The `number_one` field inherits the index-level setting.
<2> The `number_two` field overrides the index-level setting to turn off `ignore_malformed`.
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