[Improvement] Make config type of RSS_STORAGE_TYPE as enum

[zuston]

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• I have searched in the issues and found no similar issues.

What would you like to be improved?

Make config type of RSS_STORAGE_TYPE in RssBaseConf as enum

How should we improve?

The enum type of config option is introduced in #199, follow this PR to fix the storage type config

Are you willing to submit PR?

• Yes I am willing to submit a PR!

[selectbook]

is it change to something like this?

public static final ConfigOption RSS_STORAGE_TYPE = ConfigOptions
.key("rss.storage.type")
.enumType(StorageType.class)
.noDefaultValue()
.withDescription("Data storage for remote shuffle service");

[jerqi]

is it change to something like this?

public static final ConfigOption RSS_STORAGE_TYPE = ConfigOptions .key("rss.storage.type") .enumType(StorageType.class) .noDefaultValue() .withDescription("Data storage for remote shuffle service");

Yes, do you want to submit a PR?

[selectbook]

is it change to something like this?
public static final ConfigOption RSS_STORAGE_TYPE = ConfigOptions .key("rss.storage.type") .enumType(StorageType.class) .noDefaultValue() .withDescription("Data storage for remote shuffle service");

Yes, do you want to submit a PR?

yes i will fix this

[amaliujia]

I looked this a bit. I thought this requires a good amount of refactoring. For example you might need to move StorageType.class to common module.