Files
solana/core
behzad nouri b468ead1b1 uses current timestamp when flushing local pending push queue (#16808)
local_message_pending_push_queue is recording timestamps at the time the
value is created, and uses that when the pending values are flushed:
https://github.com/solana-labs/solana/blob/ec37a843a/core/src/cluster_info.rs#L321
https://github.com/solana-labs/solana/blob/ec37a843a/core/src/crds_gossip.rs#L96-L102

which is then used as the insert_timestamp when inserting values in the
crds table:
https://github.com/solana-labs/solana/blob/ec37a843a/core/src/crds_gossip_push.rs#L183

The flushing may happen 100ms after the values are created (or even
later if there is a lock contention). This will cause non-monotone
insert_timestamps in the crds table (where time goes backward),
hindering the usability of insert_timestamps for other computations.

For example both ClusterInfo::get_votes and get_epoch_slots_since rely
on monotone insert_timestamps when values are inserted into the table:
https://github.com/solana-labs/solana/blob/ec37a843a/core/src/cluster_info.rs#L1197-L1215
https://github.com/solana-labs/solana/blob/ec37a843a/core/src/cluster_info.rs#L1274-L1298

This commit removes timestamps from local_message_pending_push_queue and
uses current timestamp when flushing the queue.
2021-04-28 00:15:11 +00:00
..
2019-07-12 18:28:42 -07:00