[Data] Fix driver hang during streaming generator block metadata retrieval#1
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snorkelopstesting2-coder merged 1 commit intomainfrom Oct 22, 2025
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…ieval Original PR #56451 by dragongu Original: ray-project/ray#56451
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Recreated from original PR: ray-project/ray#56451
Why are these changes needed?
This PR fixes a critical driver hang issue in Ray Data's streaming generator. The problem occurs when computation completes and block data is generated, but the worker crashes before the metadata object is generated, causing the driver to hang completely until the task's metadata is successfully rebuilt. This creates severe performance issues, especially in cluster environments with significant resource fluctuations.
What was the problem?
**Specific s...