For example, a JSON file with key-value pair where the key name has a dot in between it. When this file is uploaded, the dot is treated as next line \n and the name will split into two properties. I tried to use mapper.allow_dots_in_name=True in the setting but no effect.
Similar question posted by someone else, but no reply https://discuss.elastic.co/t/disable-expansion-of-field-names-with-dots-in-mapping/84761
Appreciate if anyone could help.
Elasticsearch 2.4 includes a property where the field names can include a dot. And the field will not get converted to object style mapping.
This setting can be enabled by
export ES_JAVA_OPTS="-Dmapper.allow_dots_in_name=true"
But from 5.x, it is not possible to get a field value with dots without converting it into object mapping. If you index a field like abc.foo.bar (with no explicit mapping). This will get converted to
{
"mappings": {
"properties": {
"abc": {
"properties": {
"foo": {
"properties": {
"bar": {
"type": "long"
}
}
}
}
}
}
}
}
It is best to avoid dots in the field names. You can refer to this documentation, to know more about this