solana_accounts_db/
partitioned_rewards.rs

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
//! Code related to partitioned rewards distribution

#[derive(Debug)]
/// Configuration options for partitioned epoch rewards.
/// This struct allows various forms of testing, especially prior to feature activation.
pub struct PartitionedEpochRewardsConfig {
    /// number of stake accounts to store in one block during partitioned reward interval
    /// normally, this is a number tuned for reasonable performance, such as 4096 accounts/block
    /// if force_one_slot_partitioned_rewards, this will usually be u64::MAX so that all stake accounts are written in the first block
    pub stake_account_stores_per_block: u64,
    /// if true, end of epoch bank rewards will force using partitioned rewards distribution.
    /// see `set_test_enable_partitioned_rewards`
    pub test_enable_partitioned_rewards: bool,
    /// if true, end of epoch non-partitioned bank rewards will test the partitioned rewards distribution vote and stake accounts
    /// This has a significant performance impact on the first slot in each new epoch.
    pub test_compare_partitioned_epoch_rewards: bool,
}

impl Default for PartitionedEpochRewardsConfig {
    fn default() -> Self {
        Self {
            // # stake accounts to store in one block during partitioned reward interval
            // Target to store 64 rewards per entry/tick in a block. A block has a minimum of 64
            // entries/tick. This gives 4096 total rewards to store in one block.
            // This constant affects consensus.
            stake_account_stores_per_block: 4096,
            test_enable_partitioned_rewards: false,
            test_compare_partitioned_epoch_rewards: false,
        }
    }
}

#[derive(Debug, Default, Clone, Copy)]
pub enum TestPartitionedEpochRewards {
    #[default]
    None,
    CompareResults,
    ForcePartitionedEpochRewardsInOneBlock,
    PartitionedEpochRewardsConfigRewardBlocks {
        stake_account_stores_per_block: u64,
    },
}

impl PartitionedEpochRewardsConfig {
    pub fn new(test: TestPartitionedEpochRewards) -> Self {
        match test {
            TestPartitionedEpochRewards::None => Self::default(),
            TestPartitionedEpochRewards::CompareResults => {
                Self::set_test_compare_partitioned_epoch_rewards()
            }
            TestPartitionedEpochRewards::ForcePartitionedEpochRewardsInOneBlock => {
                Self::set_test_enable_partitioned_rewards()
            }
            TestPartitionedEpochRewards::PartitionedEpochRewardsConfigRewardBlocks {
                    stake_account_stores_per_block,
            } => {
                Self::set_test_enable_partitioned_rewards_with_custom_number_of_stake_accounts_per_block(
                    stake_account_stores_per_block
                )
            }
        }
    }

    /// All rewards will be distributed in the first block in the epoch, matching
    /// consensus for the non-partitioned rewards, but running all the partitioned rewards
    /// code.
    fn set_test_enable_partitioned_rewards() -> Self {
        Self {
            stake_account_stores_per_block: u64::MAX,
            test_enable_partitioned_rewards: true,
            // irrelevant if we are not running old code path
            test_compare_partitioned_epoch_rewards: false,
        }
    }

    /// All rewards will be distributed in the first block in the epoch as normal.
    /// Then, the partitioned rewards code will calculate expected results and compare to
    /// the old code path's results.
    fn set_test_compare_partitioned_epoch_rewards() -> Self {
        Self {
            test_compare_partitioned_epoch_rewards: true,
            ..PartitionedEpochRewardsConfig::default()
        }
    }

    /// A method that configures how many reward reward calculation blocks and how many stake
    /// accounts to store per reward block.
    fn set_test_enable_partitioned_rewards_with_custom_number_of_stake_accounts_per_block(
        stake_account_stores_per_block: u64,
    ) -> Self {
        Self {
            stake_account_stores_per_block,
            test_enable_partitioned_rewards: true,
            // irrelevant if we are not running old code path
            test_compare_partitioned_epoch_rewards: false,
        }
    }
}