Hi All, I am using a Receiver based approach. And I understand that spark streaming API's will convert the received data from receiver into blocks and these blocks that are in memory are also stored in WAL if one enables it. my upstream source which is not Kafka can also replay by which I mean if I don't send an ack to my upstream source it will resend it so I don't have to write the received data to WAL however I still need to enable WAL correct? because there are blocks that are in memory that needs to written to WAL so they can be recovered later.
Thanks, kant
