Switch to using byte offsets as LSNs

[fabubaker]

What changes were proposed in this pull request?

Why are the changes needed?

Does this PR introduce any user-facing change? If yes is this documented?

How was this patch tested?

Are there any further changes required?

[github-actions]

⚠️ Performance Alert ⚠️

Possible performance regression was detected for benchmark 'Rust Benchmark'.
Benchmark result of this commit is worse than the previous benchmark result exceeding threshold 2.

Benchmark suite	Current: 124389f	Previous: 9823ef7	Ratio
lotr_graph/num_edges	5 ns/iter (± 0)	0 ns/iter (± 0)	+∞
lotr_graph/num_nodes	135 ns/iter (± 24)	1 ns/iter (± 0)	135
lotr_graph/graph_latest	3 ns/iter (± 0)	0 ns/iter (± 0)	+∞
lotr_graph_window_100/num_edges	29 ns/iter (± 0)	8 ns/iter (± 0)	3.63
lotr_graph_window_100/num_nodes	143 ns/iter (± 24)	5 ns/iter (± 0)	28.60
lotr_graph_window_10/has_node_existing	132 ns/iter (± 7)	62 ns/iter (± 11)	2.13
lotr_graph_window_10/iterate nodes	32983 ns/iter (± 77)	11339 ns/iter (± 40)	2.91
lotr_graph_window_10/iterate edges	106967 ns/iter (± 353)	48684 ns/iter (± 211)	2.20
lotr_graph_subgraph_10pc/has_edge_existing	232 ns/iter (± 9)	93 ns/iter (± 1)	2.49
lotr_graph_subgraph_10pc/num_nodes	129 ns/iter (± 39)	4 ns/iter (± 0)	32.25
lotr_graph_subgraph_10pc/has_node_existing	108 ns/iter (± 2)	34 ns/iter (± 0)	3.18
lotr_graph_subgraph_10pc/iterate nodes	2556 ns/iter (± 136)	839 ns/iter (± 5)	3.05
lotr_graph_subgraph_10pc_windowed/has_node_existing	128 ns/iter (± 8)	62 ns/iter (± 14)	2.06
lotr_graph_subgraph_10pc_windowed/iterate nodes	4422 ns/iter (± 93)	1365 ns/iter (± 3)	3.24
lotr_graph_window_50_layered/num_nodes	64611 ns/iter (± 4560)	21435 ns/iter (± 536)	3.01
lotr_graph_window_50_layered/has_node_existing	941 ns/iter (± 83)	129 ns/iter (± 12)	7.29
lotr_graph_window_50_layered/max_id	72516 ns/iter (± 2156)	25556 ns/iter (± 252)	2.84
lotr_graph_window_50_layered/iterate nodes	145785 ns/iter (± 453)	19308 ns/iter (± 47)	7.55
lotr_graph_window_50_layered/iterate edges	210387 ns/iter (± 447)	83616 ns/iter (± 1318)	2.52
lotr_graph_window_50_layered/graph_latest	109174 ns/iter (± 2378)	36649 ns/iter (± 916)	2.98
lotr_graph_persistent_window_50_layered/num_edges_temporal	593619 ns/iter (± 5558)	192686 ns/iter (± 1569)	3.08
lotr_graph_persistent_window_50_layered/num_nodes	83955 ns/iter (± 4650)	31517 ns/iter (± 779)	2.66
lotr_graph_persistent_window_50_layered/has_node_existing	1116 ns/iter (± 179)	174 ns/iter (± 83)	6.41
lotr_graph_persistent_window_50_layered/max_id	93826 ns/iter (± 731)	38024 ns/iter (± 490)	2.47
lotr_graph_persistent_window_50_layered/iterate nodes	194168 ns/iter (± 1025)	35886 ns/iter (± 191)	5.41
lotr_graph_persistent_window_50_layered/iterate edges	179679 ns/iter (± 389)	84161 ns/iter (± 596)	2.13
lotr_graph_persistent_window_50_layered/graph_latest	166016 ns/iter (± 19384)	57549 ns/iter (± 4809)	2.88
lotr_graph_persistent_window_50_layered_materialise/materialize	11632293 ns/iter (± 63965)	5298035 ns/iter (± 147912)	2.20
lotr_graph/proto_encode	5919006 ns/iter (± 54552)	1157897 ns/iter (± 73709)	5.11

This comment was automatically generated by workflow using github-action-benchmark.