excludeFields parameter in river.

[richardwilly98]

This parameter should provide a comma separated list of fields that should not be indexed.

Currently the only option available to exclude fields to be indexed is using a script filter. It would be probably more efficient to exclude directly within the river.

Please rate this feature.

[richardwilly98]

Add support for child level attributes using dotted notation.
exclude_fields = ["level1.level2"]

{
    "level1" : {
        "level2" : {
            "attribute" : "1"
        },
        "attribute2" : "9"
    }
}   

Should be transformed in

{
    "level1" : {
        "attribute2" : "9"
    }
}

[richardwilly98]

For more details see [1] and [2].

[1] - https://github.com/richardwilly98/elasticsearch-river-mongodb/blob/master/src/test/java/test/elasticsearch/plugin/river/mongodb/ExcludeFieldsTest.java
[2] - https://github.com/richardwilly98/elasticsearch-river-mongodb/blob/master/src/test/java/test/elasticsearch/plugin/river/mongodb/test-exclude-fields-document.json

[agarwal-karan]

using include_fields as a parameter in options. however there are other extra keys that are getting indexed. Any pointers ?