feat: custom sharding weights #38624
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pavelfeldman
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Dec 22, 2025
| - type: <[null]|[Object]> | ||
| - `total` <[int]> The total number of shards. | ||
| - `current` <[int]> The index of the shard to execute, one-based. | ||
| - `weights` ?<[Array]<[int]>> The shard weights. |
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Let's not expose them for now.
docs/src/test-sharding-js.md
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| ## Rebalancing Shards | ||
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| ``` | ||
| npx playwright test --shard=1/4,26/24/25/25 |
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I'd say --shard=1/4 --shard-weights=26:24:25:25 to keep things readable
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Test results for "MCP"2727 passed, 116 skipped Merge workflow run. |
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Test results for "tests 1"1 failed 1 flaky34396 passed, 689 skipped Merge workflow run. |
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Inspired by #38598, alternative to #38588. Let's play around with it and see how it works for our own CI.