Keep labels in Field api

[hsz1273327]

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

[adchia]

Thanks for giving feedback and nice catch!

[achals]

Thanks for the feedback @hsz1273327 , this was definitely an oversight. We're planning on adding this back in soon (but we may be possibly changing the name of this field to tags to more accurately convey the purpose of the field).

[kevjumba]

@hsz1273327 If you are planning to switch to Field from Feature, we deprecated the label parameter in place of tags. However, the Feature object still contains the normal label.