Local timestamps are updated for records associated with a pubkey if the
origin is still active:
https://github.com/solana-labs/solana/blob/c8ed14c64/core/src/crds.rs#L301-L311
However this is done inconsistently on some gossip paths (pull requests
and pull responses) but not all (e.g. push messages). Additionally
update_record_timestamp is inefficient since there can be ~800 values
associated with each pubkey.
This commit updates records timestamps only on contact-infos; and,
instead utilizes origin's timestamp when purging old values.
(cherry picked from commit 2c82f2154d
)
Co-authored-by: behzad nouri <behzadnouri@gmail.com>