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Ensure Asset public ids are assigned deterministically #9706

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merged 1 commit into from
May 8, 2024

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mattcompiles
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We've been seeing issues internally where public Ids are not deterministic between two builds on the same commit and options. I believe this is related to how we iterate over the nodes array directly to assign the public Ids rather than using a DFS. As Assets are transformed off-thread, it's possible Assets are added to the graph in different order between builds, therefore the node Array is not deterministic.

This PR instead uses a dfs to ensure the nodes are visited in order. In the full Jira AssetGraph I measured a 100ms performance loss using DFS instead which I think is acceptable in this case.

@mattcompiles mattcompiles requested a review from a team May 8, 2024 05:46
@mattcompiles mattcompiles enabled auto-merge May 8, 2024 06:01
@mattcompiles mattcompiles added this pull request to the merge queue May 8, 2024
Merged via the queue into v2 with commit a7b7e8a May 8, 2024
16 of 17 checks passed
@marcins marcins deleted the public-id-dfs branch May 8, 2024 06:32
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2 participants