Current state: Under Discussion
Discussion thread: here
Please keep the discussion on the mailing list rather than commenting on the wiki (wiki discussions get unwieldy fast).
Currently, IQ throws InvalidStateStoreException for any types of error, that means a user cannot handle different types of error. Because of that, we should throw different exceptions for each type.
Add two new exception classes for the IQ state store errors:
public class StateStoreMigratedException extends InvalidStateStoreException
public class StateStoreClosedException extends InvalidStateStoreException
StateStoreMigratedException can be used to indicate a state store is currently not available and it may have been migrated to another instance.
StateStoreClosedException can be used to indicate a state store is closed.(RocksDBStore, WrappedStateStore)
Compatibility, Deprecation, and Migration Plan
- Because no classes will be removed, this change will be fully backward.