Partial fields in elasticsearch2.2.0 is not working?

May i know the details why the partial fields is not working in elasticsearch 2.2.0.I recently upgraded from elasticsearch 1.7.2 to elasticsearch 2.2.0.In older version it is working but after upgration results are not coming and raising an exception.

Pls find error for your reference

{
"error": {
"root_cause": [
{
"type": "search_parse_exception",
"reason": "failed to parse search source. unknown search element [partial_fields]",
"line": 79,
"col": 4
}
],
"type": "search_phase_execution_exception",
"reason": "all shards failed",
"phase": "query",
"grouped": true,
"failed_shards": [
{
"shard": 0,
"index": "candidates1",
"node": "tlFrZ6JKTOWJ6krrkRnhMw",
"reason": {
"type": "search_parse_exception",
"reason": "failed to parse search source. unknown search element [partial_fields]",
"line": 79,
"col": 4
}
}
]
},
"status": 400
}

Take a read of https://www.elastic.co/guide/en/elasticsearch/reference/2.3/breaking_20_search_changes.html#_partial_fields and see if that helps.

thank you mark