3b85cbc504
https://github.com/solana-labs/solana/pull/10095 renamed is_last_data to is_last_in_fec_set. However, the code shows that this is actually meant to indicate where the serialized data is complete: https://github.com/solana-labs/solana/blob/420174d3d/ledger/src/shred.rs#L599-L600 https://github.com/solana-labs/solana/blob/420174d3d/ledger/src/shred.rs#L229-L231 There are multiple FEC sets for each `&[Entry]` serialized and this flag does not represent shreds last in FEC sets (only the very last one by overlap). So the name is wrong and confusing