Keep labels in Field api #2607
Description
I found that new api 'Field' will take place of 'Feature' in 0.21+ feast. but Field only have 'name' and 'dtype' parameters. The parameter 'labels' is disappeared.
In my use case 'labels' is very import. 'labels' stores the default value, descriptions,and other things. for example
comic_feature_view = FeatureView(
name="comic_featureV1",
entities=["item_id"],
ttl=Duration(seconds=86400 * 1),
features=[
Feature(name="channel_id", dtype=ValueType.INT32, labels={"default": "14", "desc":"channel"}),
Feature(name="keyword_weight", dtype=ValueType.FLOAT, labels={"default": "0.0", "desc":"keyword's weight"}),
Feature(name="comic_vectorv1", dtype=ValueType.FLOAT, labels={"default": ";".join(["0.0" for i in range(32)]), "desc":"deepwalk vector","faiss_index":"/data/faiss_index/comic_featureV1__comic_vectorv1.index"}),
Feature(name="comic_vectorv2", dtype=ValueType.FLOAT, labels={"default": ";".join(["0.0" for i in range(32)]), "desc":"word2vec vector","faiss_index":"/data/faiss_index/comic_featureV1__comic_vectorv2.index"}),
Feature(name="gender", dtype=ValueType.INT32, labels={"default": "0", "desc":" 0-femal 1-male"}),
Feature(name="pub_time", dtype=ValueType.STRING, labels={"default": "1970-01-01 00:00:00", "desc":"comic's publish time"}),
Feature(name="update_time", dtype=ValueType.STRING, labels={"default": "1970-01-01 00:00:00", "desc":"comic's update time"}),
Feature(name="view_cnt", dtype=ValueType.INT64, labels={"default": "0", "desc":"comic's hot score"}),
Feature(name="collect_cnt", dtype=ValueType.INT64, labels={"default": "0", "desc":"collect count"}),
Feature(name="source_id", dtype=ValueType.INT32, labels={"default": "0", "desc":"comic is from(0-unknown，1-japen，2-usa，3- other)"}),So please keep the parameter 'labels' in Field api