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replay_stage.rs
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replay_stage.rs
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//! The `replay_stage` replays transactions broadcast by the leader.
use {
crate::{
broadcast_stage::RetransmitSlotsSender,
cache_block_meta_service::CacheBlockMetaSender,
cluster_info_vote_listener::{
GossipDuplicateConfirmedSlotsReceiver, GossipVerifiedVoteHashReceiver, VoteTracker,
},
cluster_slot_state_verifier::*,
cluster_slots::ClusterSlots,
cluster_slots_service::ClusterSlotsUpdateSender,
commitment_service::{AggregateCommitmentService, CommitmentAggregationData},
consensus::{
ComputedBankState, Stake, SwitchForkDecision, Tower, VotedStakes, SWITCH_FORK_THRESHOLD,
},
cost_update_service::CostUpdate,
fork_choice::{ForkChoice, SelectVoteAndResetForkResult},
heaviest_subtree_fork_choice::HeaviestSubtreeForkChoice,
latest_validator_votes_for_frozen_banks::LatestValidatorVotesForFrozenBanks,
progress_map::{ForkProgress, ProgressMap, PropagatedStats},
repair_service::DuplicateSlotsResetReceiver,
rewards_recorder_service::RewardsRecorderSender,
unfrozen_gossip_verified_vote_hashes::UnfrozenGossipVerifiedVoteHashes,
voting_service::VoteOp,
window_service::DuplicateSlotReceiver,
},
solana_client::rpc_response::SlotUpdate,
solana_gossip::cluster_info::ClusterInfo,
solana_ledger::{
block_error::BlockError,
blockstore::Blockstore,
blockstore_processor::{self, BlockstoreProcessorError, TransactionStatusSender},
entry::VerifyRecyclers,
leader_schedule_cache::LeaderScheduleCache,
},
solana_measure::measure::Measure,
solana_metrics::inc_new_counter_info,
solana_poh::poh_recorder::{PohRecorder, GRACE_TICKS_FACTOR, MAX_GRACE_SLOTS},
solana_rpc::{
optimistically_confirmed_bank_tracker::{BankNotification, BankNotificationSender},
rpc_subscriptions::RpcSubscriptions,
},
solana_runtime::{
accounts_background_service::AbsRequestSender,
bank::{Bank, NewBankOptions},
bank_forks::BankForks,
commitment::BlockCommitmentCache,
vote_sender_types::ReplayVoteSender,
},
solana_sdk::{
clock::{Slot, MAX_PROCESSING_AGE, NUM_CONSECUTIVE_LEADER_SLOTS},
execute_timings::ExecuteTimings,
genesis_config::ClusterType,
hash::Hash,
pubkey::Pubkey,
saturating_add_assign,
signature::{Keypair, Signature, Signer},
timing::timestamp,
transaction::Transaction,
},
solana_vote_program::vote_state::Vote,
std::{
collections::{BTreeMap, HashMap, HashSet},
result,
sync::{
atomic::{AtomicBool, Ordering},
mpsc::{Receiver, RecvTimeoutError, Sender},
Arc, Mutex, RwLock,
},
thread::{self, Builder, JoinHandle},
time::{Duration, Instant},
},
};
pub const MAX_ENTRY_RECV_PER_ITER: usize = 512;
pub const SUPERMINORITY_THRESHOLD: f64 = 1f64 / 3f64;
pub const MAX_UNCONFIRMED_SLOTS: usize = 5;
pub const DUPLICATE_LIVENESS_THRESHOLD: f64 = 0.1;
pub const DUPLICATE_THRESHOLD: f64 = 1.0 - SWITCH_FORK_THRESHOLD - DUPLICATE_LIVENESS_THRESHOLD;
const MAX_VOTE_SIGNATURES: usize = 200;
const MAX_VOTE_REFRESH_INTERVAL_MILLIS: usize = 5000;
#[derive(PartialEq, Debug)]
pub(crate) enum HeaviestForkFailures {
LockedOut(u64),
FailedThreshold(u64),
FailedSwitchThreshold(u64),
NoPropagatedConfirmation(u64),
}
// Implement a destructor for the ReplayStage thread to signal it exited
// even on panics
struct Finalizer {
exit_sender: Arc<AtomicBool>,
}
impl Finalizer {
fn new(exit_sender: Arc<AtomicBool>) -> Self {
Finalizer { exit_sender }
}
}
// Implement a destructor for Finalizer.
impl Drop for Finalizer {
fn drop(&mut self) {
self.exit_sender.clone().store(true, Ordering::Relaxed);
}
}
struct LastVoteRefreshTime {
last_refresh_time: Instant,
last_print_time: Instant,
}
#[derive(Default)]
struct SkippedSlotsInfo {
last_retransmit_slot: u64,
last_skipped_slot: u64,
}
pub struct ReplayStageConfig {
pub my_pubkey: Pubkey,
pub vote_account: Pubkey,
pub authorized_voter_keypairs: Arc<RwLock<Vec<Arc<Keypair>>>>,
pub exit: Arc<AtomicBool>,
pub rpc_subscriptions: Arc<RpcSubscriptions>,
pub leader_schedule_cache: Arc<LeaderScheduleCache>,
pub latest_root_senders: Vec<Sender<Slot>>,
pub accounts_background_request_sender: AbsRequestSender,
pub block_commitment_cache: Arc<RwLock<BlockCommitmentCache>>,
pub transaction_status_sender: Option<TransactionStatusSender>,
pub rewards_recorder_sender: Option<RewardsRecorderSender>,
pub cache_block_meta_sender: Option<CacheBlockMetaSender>,
pub bank_notification_sender: Option<BankNotificationSender>,
pub wait_for_vote_to_start_leader: bool,
}
#[derive(Default)]
pub struct ReplayTiming {
last_print: u64,
collect_frozen_banks_elapsed: u64,
compute_bank_stats_elapsed: u64,
select_vote_and_reset_forks_elapsed: u64,
start_leader_elapsed: u64,
reset_bank_elapsed: u64,
voting_elapsed: u64,
vote_push_us: u64,
vote_send_us: u64,
generate_vote_us: u64,
update_commitment_cache_us: u64,
select_forks_elapsed: u64,
compute_slot_stats_elapsed: u64,
generate_new_bank_forks_elapsed: u64,
replay_active_banks_elapsed: u64,
wait_receive_elapsed: u64,
heaviest_fork_failures_elapsed: u64,
bank_count: u64,
process_gossip_duplicate_confirmed_slots_elapsed: u64,
process_duplicate_slots_elapsed: u64,
process_unfrozen_gossip_verified_vote_hashes_elapsed: u64,
generate_new_bank_forks_read_lock_us: u64,
generate_new_bank_forks_get_slots_since_us: u64,
generate_new_bank_forks_loop_us: u64,
generate_new_bank_forks_write_lock_us: u64,
}
impl ReplayTiming {
#[allow(clippy::too_many_arguments)]
fn update(
&mut self,
collect_frozen_banks_elapsed: u64,
compute_bank_stats_elapsed: u64,
select_vote_and_reset_forks_elapsed: u64,
start_leader_elapsed: u64,
reset_bank_elapsed: u64,
voting_elapsed: u64,
select_forks_elapsed: u64,
compute_slot_stats_elapsed: u64,
generate_new_bank_forks_elapsed: u64,
replay_active_banks_elapsed: u64,
wait_receive_elapsed: u64,
heaviest_fork_failures_elapsed: u64,
bank_count: u64,
process_gossip_duplicate_confirmed_slots_elapsed: u64,
process_unfrozen_gossip_verified_vote_hashes_elapsed: u64,
process_duplicate_slots_elapsed: u64,
) {
self.collect_frozen_banks_elapsed += collect_frozen_banks_elapsed;
self.compute_bank_stats_elapsed += compute_bank_stats_elapsed;
self.select_vote_and_reset_forks_elapsed += select_vote_and_reset_forks_elapsed;
self.start_leader_elapsed += start_leader_elapsed;
self.reset_bank_elapsed += reset_bank_elapsed;
self.voting_elapsed += voting_elapsed;
self.select_forks_elapsed += select_forks_elapsed;
self.compute_slot_stats_elapsed += compute_slot_stats_elapsed;
self.generate_new_bank_forks_elapsed += generate_new_bank_forks_elapsed;
self.replay_active_banks_elapsed += replay_active_banks_elapsed;
self.wait_receive_elapsed += wait_receive_elapsed;
self.heaviest_fork_failures_elapsed += heaviest_fork_failures_elapsed;
self.bank_count += bank_count;
self.process_gossip_duplicate_confirmed_slots_elapsed +=
process_gossip_duplicate_confirmed_slots_elapsed;
self.process_unfrozen_gossip_verified_vote_hashes_elapsed +=
process_unfrozen_gossip_verified_vote_hashes_elapsed;
self.process_duplicate_slots_elapsed += process_duplicate_slots_elapsed;
let now = timestamp();
let elapsed_ms = now - self.last_print;
if elapsed_ms > 1000 {
datapoint_info!(
"replay-loop-voting-stats",
("vote_push_us", self.vote_push_us, i64),
("vote_send_us", self.vote_send_us, i64),
("generate_vote_us", self.generate_vote_us, i64),
(
"update_commitment_cache_us",
self.update_commitment_cache_us,
i64
),
);
datapoint_info!(
"replay-loop-timing-stats",
("total_elapsed_us", elapsed_ms * 1000, i64),
(
"collect_frozen_banks_elapsed",
self.collect_frozen_banks_elapsed as i64,
i64
),
(
"compute_bank_stats_elapsed",
self.compute_bank_stats_elapsed as i64,
i64
),
(
"select_vote_and_reset_forks_elapsed",
self.select_vote_and_reset_forks_elapsed as i64,
i64
),
(
"start_leader_elapsed",
self.start_leader_elapsed as i64,
i64
),
("reset_bank_elapsed", self.reset_bank_elapsed as i64, i64),
("voting_elapsed", self.voting_elapsed as i64, i64),
(
"select_forks_elapsed",
self.select_forks_elapsed as i64,
i64
),
(
"compute_slot_stats_elapsed",
self.compute_slot_stats_elapsed as i64,
i64
),
(
"generate_new_bank_forks_elapsed",
self.generate_new_bank_forks_elapsed as i64,
i64
),
(
"replay_active_banks_elapsed",
self.replay_active_banks_elapsed as i64,
i64
),
(
"process_gossip_duplicate_confirmed_slots_elapsed",
self.process_gossip_duplicate_confirmed_slots_elapsed as i64,
i64
),
(
"process_unfrozen_gossip_verified_vote_hashes_elapsed",
self.process_unfrozen_gossip_verified_vote_hashes_elapsed as i64,
i64
),
(
"wait_receive_elapsed",
self.wait_receive_elapsed as i64,
i64
),
(
"heaviest_fork_failures_elapsed",
self.heaviest_fork_failures_elapsed as i64,
i64
),
("bank_count", self.bank_count as i64, i64),
(
"process_duplicate_slots_elapsed",
self.process_duplicate_slots_elapsed as i64,
i64
),
(
"generate_new_bank_forks_read_lock_us",
self.generate_new_bank_forks_read_lock_us as i64,
i64
),
(
"generate_new_bank_forks_get_slots_since_us",
self.generate_new_bank_forks_get_slots_since_us as i64,
i64
),
(
"generate_new_bank_forks_loop_us",
self.generate_new_bank_forks_loop_us as i64,
i64
),
(
"generate_new_bank_forks_write_lock_us",
self.generate_new_bank_forks_write_lock_us as i64,
i64
),
);
*self = ReplayTiming::default();
self.last_print = now;
}
}
}
pub struct ReplayStage {
t_replay: JoinHandle<()>,
commitment_service: AggregateCommitmentService,
}
impl ReplayStage {
#[allow(clippy::new_ret_no_self, clippy::too_many_arguments)]
pub fn new(
config: ReplayStageConfig,
blockstore: Arc<Blockstore>,
bank_forks: Arc<RwLock<BankForks>>,
cluster_info: Arc<ClusterInfo>,
ledger_signal_receiver: Receiver<bool>,
duplicate_slots_receiver: DuplicateSlotReceiver,
poh_recorder: Arc<Mutex<PohRecorder>>,
mut tower: Tower,
vote_tracker: Arc<VoteTracker>,
cluster_slots: Arc<ClusterSlots>,
retransmit_slots_sender: RetransmitSlotsSender,
_duplicate_slots_reset_receiver: DuplicateSlotsResetReceiver,
replay_vote_sender: ReplayVoteSender,
gossip_duplicate_confirmed_slots_receiver: GossipDuplicateConfirmedSlotsReceiver,
gossip_verified_vote_hash_receiver: GossipVerifiedVoteHashReceiver,
cluster_slots_update_sender: ClusterSlotsUpdateSender,
voting_sender: Sender<VoteOp>,
cost_update_sender: Sender<CostUpdate>,
drop_bank_sender: Sender<Vec<Arc<Bank>>>,
) -> Self {
let ReplayStageConfig {
my_pubkey,
vote_account,
authorized_voter_keypairs,
exit,
rpc_subscriptions,
leader_schedule_cache,
latest_root_senders,
accounts_background_request_sender,
block_commitment_cache,
transaction_status_sender,
rewards_recorder_sender,
cache_block_meta_sender,
bank_notification_sender,
wait_for_vote_to_start_leader,
} = config;
trace!("replay stage");
// Start the replay stage loop
let (lockouts_sender, commitment_service) = AggregateCommitmentService::new(
&exit,
block_commitment_cache.clone(),
rpc_subscriptions.clone(),
);
#[allow(clippy::cognitive_complexity)]
let t_replay = Builder::new()
.name("solana-replay-stage".to_string())
.spawn(move || {
let verify_recyclers = VerifyRecyclers::default();
let _exit = Finalizer::new(exit.clone());
let (
mut progress,
mut heaviest_subtree_fork_choice,
) = Self::initialize_progress_and_fork_choice_with_locked_bank_forks(
&bank_forks,
&my_pubkey,
&vote_account,
);
let mut current_leader = None;
let mut last_reset = Hash::default();
let mut partition_exists = false;
let mut skipped_slots_info = SkippedSlotsInfo::default();
let mut replay_timing = ReplayTiming::default();
let mut duplicate_slots_tracker = DuplicateSlotsTracker::default();
let mut gossip_duplicate_confirmed_slots = GossipDuplicateConfirmedSlots::default();
let mut unfrozen_gossip_verified_vote_hashes = UnfrozenGossipVerifiedVoteHashes::default();
let mut latest_validator_votes_for_frozen_banks = LatestValidatorVotesForFrozenBanks::default();
let mut voted_signatures = Vec::new();
let mut has_new_vote_been_rooted = !wait_for_vote_to_start_leader;
let mut last_vote_refresh_time = LastVoteRefreshTime {
last_refresh_time: Instant::now(),
last_print_time: Instant::now(),
};
loop {
// Stop getting entries if we get exit signal
if exit.load(Ordering::Relaxed) {
break;
}
let mut generate_new_bank_forks_time =
Measure::start("generate_new_bank_forks_time");
Self::generate_new_bank_forks(
&blockstore,
&bank_forks,
&leader_schedule_cache,
&rpc_subscriptions,
&mut progress,
&mut replay_timing,
);
generate_new_bank_forks_time.stop();
let mut tpu_has_bank = poh_recorder.lock().unwrap().has_bank();
let mut replay_active_banks_time = Measure::start("replay_active_banks_time");
let ancestors = bank_forks.read().unwrap().ancestors();
let descendants = bank_forks.read().unwrap().descendants().clone();
let did_complete_bank = Self::replay_active_banks(
&blockstore,
&bank_forks,
&my_pubkey,
&vote_account,
&mut progress,
transaction_status_sender.as_ref(),
cache_block_meta_sender.as_ref(),
&verify_recyclers,
&mut heaviest_subtree_fork_choice,
&replay_vote_sender,
&bank_notification_sender,
&rewards_recorder_sender,
&rpc_subscriptions,
&mut duplicate_slots_tracker,
&gossip_duplicate_confirmed_slots,
&mut unfrozen_gossip_verified_vote_hashes,
&mut latest_validator_votes_for_frozen_banks,
&cluster_slots_update_sender,
&cost_update_sender,
);
replay_active_banks_time.stop();
let forks_root = bank_forks.read().unwrap().root();
// Reset any duplicate slots that have been confirmed
// by the network in anticipation of the confirmed version of
// the slot
/*let mut reset_duplicate_slots_time = Measure::start("reset_duplicate_slots");
Self::reset_duplicate_slots(
&duplicate_slots_reset_receiver,
&mut ancestors,
&mut descendants,
&mut progress,
&bank_forks,
);
reset_duplicate_slots_time.stop();*/
// Check for any newly confirmed slots detected from gossip.
let mut process_gossip_duplicate_confirmed_slots_time = Measure::start("process_gossip_duplicate_confirmed_slots");
Self::process_gossip_duplicate_confirmed_slots(
&gossip_duplicate_confirmed_slots_receiver,
&mut duplicate_slots_tracker,
&mut gossip_duplicate_confirmed_slots,
&bank_forks,
&mut progress,
&mut heaviest_subtree_fork_choice,
);
process_gossip_duplicate_confirmed_slots_time.stop();
// Ingest any new verified votes from gossip. Important for fork choice
// and switching proofs because these may be votes that haven't yet been
// included in a block, so we may not have yet observed these votes just
// by replaying blocks.
let mut process_unfrozen_gossip_verified_vote_hashes_time = Measure::start("process_gossip_duplicate_confirmed_slots");
Self::process_gossip_verified_vote_hashes(
&gossip_verified_vote_hash_receiver,
&mut unfrozen_gossip_verified_vote_hashes,
&heaviest_subtree_fork_choice,
&mut latest_validator_votes_for_frozen_banks,
);
for _ in gossip_verified_vote_hash_receiver.try_iter() {}
process_unfrozen_gossip_verified_vote_hashes_time.stop();
// Check to remove any duplicated slots from fork choice
let mut process_duplicate_slots_time = Measure::start("process_duplicate_slots");
if !tpu_has_bank {
Self::process_duplicate_slots(
&duplicate_slots_receiver,
&mut duplicate_slots_tracker,
&gossip_duplicate_confirmed_slots,
&bank_forks,
&mut progress,
&mut heaviest_subtree_fork_choice,
);
}
process_duplicate_slots_time.stop();
let mut collect_frozen_banks_time = Measure::start("frozen_banks");
let mut frozen_banks: Vec<_> = bank_forks
.read()
.unwrap()
.frozen_banks()
.into_iter()
.filter(|(slot, _)| *slot >= forks_root)
.map(|(_, bank)| bank)
.collect();
collect_frozen_banks_time.stop();
let mut compute_bank_stats_time = Measure::start("compute_bank_stats");
let newly_computed_slot_stats = Self::compute_bank_stats(
&vote_account,
&ancestors,
&mut frozen_banks,
&tower,
&mut progress,
&vote_tracker,
&cluster_slots,
&bank_forks,
&mut heaviest_subtree_fork_choice,
&mut latest_validator_votes_for_frozen_banks,
);
compute_bank_stats_time.stop();
let mut compute_slot_stats_time = Measure::start("compute_slot_stats_time");
for slot in newly_computed_slot_stats {
let fork_stats = progress.get_fork_stats(slot).unwrap();
let confirmed_forks = Self::confirm_forks(
&tower,
&fork_stats.voted_stakes,
fork_stats.total_stake,
&progress,
&bank_forks,
);
Self::mark_slots_confirmed(&confirmed_forks, &bank_forks, &mut progress, &mut duplicate_slots_tracker, &mut heaviest_subtree_fork_choice);
}
compute_slot_stats_time.stop();
let mut select_forks_time = Measure::start("select_forks_time");
let (heaviest_bank, heaviest_bank_on_same_voted_fork) = heaviest_subtree_fork_choice
.select_forks(&frozen_banks, &tower, &progress, &ancestors, &bank_forks);
select_forks_time.stop();
if let Some(heaviest_bank_on_same_voted_fork) = heaviest_bank_on_same_voted_fork.as_ref() {
if let Some(my_latest_landed_vote) = progress.my_latest_landed_vote(heaviest_bank_on_same_voted_fork.slot()) {
Self::refresh_last_vote(&mut tower, &cluster_info,
heaviest_bank_on_same_voted_fork,
my_latest_landed_vote,
&vote_account,
&authorized_voter_keypairs.read().unwrap(),
&mut voted_signatures,
has_new_vote_been_rooted, &mut
last_vote_refresh_time,
&voting_sender,
);
}
}
let mut select_vote_and_reset_forks_time =
Measure::start("select_vote_and_reset_forks");
let SelectVoteAndResetForkResult {
vote_bank,
reset_bank,
heaviest_fork_failures,
} = Self::select_vote_and_reset_forks(
&heaviest_bank,
heaviest_bank_on_same_voted_fork.as_ref(),
&ancestors,
&descendants,
&progress,
&mut tower,
&latest_validator_votes_for_frozen_banks,
&heaviest_subtree_fork_choice,
);
select_vote_and_reset_forks_time.stop();
let mut heaviest_fork_failures_time = Measure::start("heaviest_fork_failures_time");
if tower.is_recent(heaviest_bank.slot()) && !heaviest_fork_failures.is_empty() {
info!(
"Couldn't vote on heaviest fork: {:?}, heaviest_fork_failures: {:?}",
heaviest_bank.slot(),
heaviest_fork_failures
);
for r in heaviest_fork_failures {
if let HeaviestForkFailures::NoPropagatedConfirmation(slot) = r {
if let Some(latest_leader_slot) =
progress.get_latest_leader_slot(slot)
{
progress.log_propagated_stats(latest_leader_slot, &bank_forks);
}
}
}
}
heaviest_fork_failures_time.stop();
let mut voting_time = Measure::start("voting_time");
// Vote on a fork
if let Some((ref vote_bank, ref switch_fork_decision)) = vote_bank {
if let Some(votable_leader) =
leader_schedule_cache.slot_leader_at(vote_bank.slot(), Some(vote_bank))
{
Self::log_leader_change(
&my_pubkey,
vote_bank.slot(),
&mut current_leader,
&votable_leader,
);
}
Self::handle_votable_bank(
vote_bank,
switch_fork_decision,
&bank_forks,
&mut tower,
&mut progress,
&vote_account,
&authorized_voter_keypairs.read().unwrap(),
&cluster_info,
&blockstore,
&leader_schedule_cache,
&lockouts_sender,
&accounts_background_request_sender,
&latest_root_senders,
&rpc_subscriptions,
&block_commitment_cache,
&mut heaviest_subtree_fork_choice,
&bank_notification_sender,
&mut duplicate_slots_tracker,
&mut gossip_duplicate_confirmed_slots,
&mut unfrozen_gossip_verified_vote_hashes,
&mut voted_signatures,
&mut has_new_vote_been_rooted,
&mut replay_timing,
&voting_sender,
&drop_bank_sender,
);
};
voting_time.stop();
let mut reset_bank_time = Measure::start("reset_bank");
// Reset onto a fork
if let Some(reset_bank) = reset_bank {
if last_reset != reset_bank.last_blockhash() {
info!(
"vote bank: {:?} reset bank: {:?}",
vote_bank.as_ref().map(|(b, switch_fork_decision)| (
b.slot(),
switch_fork_decision
)),
reset_bank.slot(),
);
let fork_progress = progress
.get(&reset_bank.slot())
.expect("bank to reset to must exist in progress map");
datapoint_info!(
"blocks_produced",
("num_blocks_on_fork", fork_progress.num_blocks_on_fork, i64),
(
"num_dropped_blocks_on_fork",
fork_progress.num_dropped_blocks_on_fork,
i64
),
);
Self::reset_poh_recorder(
&my_pubkey,
&blockstore,
&reset_bank,
&poh_recorder,
&leader_schedule_cache,
);
last_reset = reset_bank.last_blockhash();
tpu_has_bank = false;
if let Some(last_voted_slot) = tower.last_voted_slot() {
// If the current heaviest bank is not a descendant of the last voted slot,
// there must be a partition
let partition_detected = Self::is_partition_detected(&ancestors, last_voted_slot, heaviest_bank.slot());
if !partition_exists && partition_detected
{
warn!(
"PARTITION DETECTED waiting to join heaviest fork: {} last vote: {:?}, reset slot: {}",
heaviest_bank.slot(),
last_voted_slot,
reset_bank.slot(),
);
inc_new_counter_info!("replay_stage-partition_detected", 1);
datapoint_info!(
"replay_stage-partition",
("slot", reset_bank.slot() as i64, i64)
);
partition_exists = true;
} else if partition_exists
&& !partition_detected
{
warn!(
"PARTITION resolved heaviest fork: {} last vote: {:?}, reset slot: {}",
heaviest_bank.slot(),
last_voted_slot,
reset_bank.slot()
);
partition_exists = false;
inc_new_counter_info!("replay_stage-partition_resolved", 1);
}
}
}
}
reset_bank_time.stop();
let mut start_leader_time = Measure::start("start_leader_time");
if !tpu_has_bank {
Self::maybe_start_leader(
&my_pubkey,
&bank_forks,
&poh_recorder,
&leader_schedule_cache,
&rpc_subscriptions,
&progress,
&retransmit_slots_sender,
&mut skipped_slots_info,
has_new_vote_been_rooted,
);
let poh_bank = poh_recorder.lock().unwrap().bank();
if let Some(bank) = poh_bank {
Self::log_leader_change(
&my_pubkey,
bank.slot(),
&mut current_leader,
&my_pubkey,
);
}
}
start_leader_time.stop();
let mut wait_receive_time = Measure::start("wait_receive_time");
if !did_complete_bank {
// only wait for the signal if we did not just process a bank; maybe there are more slots available
let timer = Duration::from_millis(100);
let result = ledger_signal_receiver.recv_timeout(timer);
match result {
Err(RecvTimeoutError::Timeout) => (),
Err(_) => break,
Ok(_) => trace!("blockstore signal"),
};
}
wait_receive_time.stop();
replay_timing.update(
collect_frozen_banks_time.as_us(),
compute_bank_stats_time.as_us(),
select_vote_and_reset_forks_time.as_us(),
start_leader_time.as_us(),
reset_bank_time.as_us(),
voting_time.as_us(),
select_forks_time.as_us(),
compute_slot_stats_time.as_us(),
generate_new_bank_forks_time.as_us(),
replay_active_banks_time.as_us(),
wait_receive_time.as_us(),
heaviest_fork_failures_time.as_us(),
if did_complete_bank {1} else {0},
process_gossip_duplicate_confirmed_slots_time.as_us(),
process_unfrozen_gossip_verified_vote_hashes_time.as_us(),
process_duplicate_slots_time.as_us(),
);
}
})
.unwrap();
Self {
t_replay,
commitment_service,
}
}
fn is_partition_detected(
ancestors: &HashMap<Slot, HashSet<Slot>>,
last_voted_slot: Slot,
heaviest_slot: Slot,
) -> bool {
last_voted_slot != heaviest_slot
&& !ancestors
.get(&heaviest_slot)
.map(|ancestors| ancestors.contains(&last_voted_slot))
.unwrap_or(true)
}
fn initialize_progress_and_fork_choice_with_locked_bank_forks(
bank_forks: &RwLock<BankForks>,
my_pubkey: &Pubkey,
vote_account: &Pubkey,
) -> (ProgressMap, HeaviestSubtreeForkChoice) {
let (root_bank, frozen_banks) = {
let bank_forks = bank_forks.read().unwrap();
(
bank_forks.root_bank(),
bank_forks.frozen_banks().values().cloned().collect(),
)
};
Self::initialize_progress_and_fork_choice(&root_bank, frozen_banks, my_pubkey, vote_account)
}
pub(crate) fn initialize_progress_and_fork_choice(
root_bank: &Bank,
mut frozen_banks: Vec<Arc<Bank>>,
my_pubkey: &Pubkey,
vote_account: &Pubkey,
) -> (ProgressMap, HeaviestSubtreeForkChoice) {
let mut progress = ProgressMap::default();
frozen_banks.sort_by_key(|bank| bank.slot());
// Initialize progress map with any root banks
for bank in &frozen_banks {
let prev_leader_slot = progress.get_bank_prev_leader_slot(bank);
progress.insert(
bank.slot(),
ForkProgress::new_from_bank(bank, my_pubkey, vote_account, prev_leader_slot, 0, 0),
);
}
let root = root_bank.slot();
let heaviest_subtree_fork_choice = HeaviestSubtreeForkChoice::new_from_frozen_banks(
(root, root_bank.hash()),
&frozen_banks,
);
(progress, heaviest_subtree_fork_choice)
}
#[allow(dead_code)]
fn reset_duplicate_slots(
duplicate_slots_reset_receiver: &DuplicateSlotsResetReceiver,
ancestors: &mut HashMap<Slot, HashSet<Slot>>,
descendants: &mut HashMap<Slot, HashSet<Slot>>,
progress: &mut ProgressMap,
bank_forks: &RwLock<BankForks>,
) {
for duplicate_slot in duplicate_slots_reset_receiver.try_iter() {
Self::purge_unconfirmed_duplicate_slot(
duplicate_slot,
ancestors,
descendants,
progress,
bank_forks,
);
}
}
#[allow(dead_code)]
fn purge_unconfirmed_duplicate_slot(
duplicate_slot: Slot,
ancestors: &mut HashMap<Slot, HashSet<Slot>>,
descendants: &mut HashMap<Slot, HashSet<Slot>>,
progress: &mut ProgressMap,
bank_forks: &RwLock<BankForks>,
) {
warn!("purging slot {}", duplicate_slot);
let slot_descendants = descendants.get(&duplicate_slot).cloned();
if slot_descendants.is_none() {
// Root has already moved past this slot, no need to purge it
return;
}
// Clear the ancestors/descendants map to keep them
// consistent
let slot_descendants = slot_descendants.unwrap();
Self::purge_ancestors_descendants(
duplicate_slot,
&slot_descendants,
ancestors,
descendants,
);
for d in slot_descendants
.iter()
.chain(std::iter::once(&duplicate_slot))
{
// Clear the progress map of these forks
let _ = progress.remove(d);
// Clear the duplicate banks from BankForks
{
let mut w_bank_forks = bank_forks.write().unwrap();
w_bank_forks.remove(*d);
}
}
}
// Purge given slot and all its descendants from the `ancestors` and
// `descendants` structures so that they're consistent with `BankForks`
// and the `progress` map.
fn purge_ancestors_descendants(
slot: Slot,
slot_descendants: &HashSet<Slot>,
ancestors: &mut HashMap<Slot, HashSet<Slot>>,
descendants: &mut HashMap<Slot, HashSet<Slot>>,
) {
if !ancestors.contains_key(&slot) {
// Slot has already been purged
return;
}
// Purge this slot from each of its ancestors' `descendants` maps
for a in ancestors
.get(&slot)
.expect("must exist based on earlier check")
{
descendants
.get_mut(a)
.expect("If exists in ancestor map must exist in descendants map")
.retain(|d| *d != slot && !slot_descendants.contains(d));
}
ancestors
.remove(&slot)
.expect("must exist based on earlier check");
// Purge all the descendants of this slot from both maps
for descendant in slot_descendants {
ancestors.remove(descendant).expect("must exist");
descendants
.remove(descendant)
.expect("must exist based on earlier check");
}
descendants
.remove(&slot)
.expect("must exist based on earlier check");
}
// Check for any newly confirmed slots by the cluster. This is only detects
// optimistic and in the future, duplicate slot confirmations on the exact
// single slots and does not account for votes on their descendants. Used solely
// for duplicate slot recovery.
fn process_gossip_duplicate_confirmed_slots(
gossip_duplicate_confirmed_slots_receiver: &GossipDuplicateConfirmedSlotsReceiver,
duplicate_slots_tracker: &mut DuplicateSlotsTracker,
gossip_duplicate_confirmed_slots: &mut GossipDuplicateConfirmedSlots,
bank_forks: &RwLock<BankForks>,
progress: &mut ProgressMap,
fork_choice: &mut HeaviestSubtreeForkChoice,
) {
let root = bank_forks.read().unwrap().root();
for new_confirmed_slots in gossip_duplicate_confirmed_slots_receiver.try_iter() {
for (confirmed_slot, confirmed_hash) in new_confirmed_slots {
if confirmed_slot <= root {
continue;
} else if let Some(prev_hash) =
gossip_duplicate_confirmed_slots.insert(confirmed_slot, confirmed_hash)
{
assert_eq!(prev_hash, confirmed_hash);
// Already processed this signal
return;
}
check_slot_agrees_with_cluster(
confirmed_slot,
root,
bank_forks
.read()
.unwrap()
.get(confirmed_slot)
.map(|b| b.hash()),
duplicate_slots_tracker,
gossip_duplicate_confirmed_slots,
progress,
fork_choice,
SlotStateUpdate::DuplicateConfirmed,
);
}
}
}
fn process_gossip_verified_vote_hashes(
gossip_verified_vote_hash_receiver: &GossipVerifiedVoteHashReceiver,
unfrozen_gossip_verified_vote_hashes: &mut UnfrozenGossipVerifiedVoteHashes,
heaviest_subtree_fork_choice: &HeaviestSubtreeForkChoice,
latest_validator_votes_for_frozen_banks: &mut LatestValidatorVotesForFrozenBanks,
) {
for (pubkey, slot, hash) in gossip_verified_vote_hash_receiver.try_iter() {
let is_frozen = heaviest_subtree_fork_choice.contains_block(&(slot, hash));
// cluster_info_vote_listener will ensure it doesn't push duplicates
unfrozen_gossip_verified_vote_hashes.add_vote(
pubkey,
slot,
hash,
is_frozen,
latest_validator_votes_for_frozen_banks,
)
}
}
// Checks for and handle forks with duplicate slots.
fn process_duplicate_slots(