pull_response_fail_inserts has been increasing:
https://cdn.discordapp.com/attachments/478692221441409024/759096187587657778/pull_response_fail_insert.png
but for outdated values which fail to insert:
https://github.com/solana-labs/solana/blob/a5c3fc14b3/core/src/crds_gossip_pull.rs#L332-L344
https://github.com/solana-labs/solana/blob/a5c3fc14b3/core/src/crds.rs#L104-L108
are not recorded anywhere, and so the next pull request may obtain the
same redundant payload again, unnecessary taking bandwidth.
This commit holds on to the hashes of failed-inserts for a while, similar
to purged_values:
https://github.com/solana-labs/solana/blob/a5c3fc14b3/core/src/crds_gossip_pull.rs#L380
and filter them out for the next pull request:
https://github.com/solana-labs/solana/blob/a5c3fc14b3/core/src/crds_gossip_pull.rs#L204
(cherry picked from commit 1866521df6
)
Co-authored-by: behzad nouri <behzadnouri@gmail.com>