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Subscription: intro poll and prefetch v2 for tsfile topic #15790

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Subscription: intro poll and prefetch v2 for tsfile topic #15790

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@VGalaxies VGalaxies commented Jun 19, 2025 •
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The core idea of v2 is:

  1. Polling should not drive prefetch; instead, during the remaining time, it should poll the prefetching queue.
  2. Prefetch should handle tsfile events specially by performing stateful, on-demand parsing (with retries if necessary).

@SteveYurongSu SteveYurongSu self-assigned this Jun 20, 2025
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@VGalaxies VGalaxies marked this pull request as ready for review June 24, 2025 14:28
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