updateStateByKey - Can this be used when the key is multi-column (like a composite key ) and the value is not numeric. All the examples I have come across is where the key is a simple String and the Value is numeric.
Appreciate any help. Thanks
updateStateByKey - Can this be used when the key is multi-column (like a composite key ) and the value is not numeric. All the examples I have come across is where the key is a simple String and the Value is numeric.
Appreciate any help. Thanks