branch-4.0: [Fix](StreamingJob) Optimize CDC consumption strategy #60181 #60463
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### What problem does this PR solve? Related PR: #58898 #59461 This PR primarily optimizes the speed of incremental and snapshot reads. 1. For incremental reads: - Binding the fetch logic to an interval allows fetching data within that interval. - Splitting the fetch and write logic asynchronously. 2. For snapshot reads: - Introducing the `snapshot_split_size` and `snapshot_parallelism` parameters. - `snapshot_split_size`: Adjusts the size of each chunk during the split phase, allowing each split to fetch more data. - `snapshot_parallelism`: The degree of parallelism during the snapshot read phase, i.e., how many chunks can run simultaneously, and how many chunks are scheduled in a single task.
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Thank you for your contribution to Apache Doris. Please clearly describe your PR:
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run buildall |
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run nonConcurrent |
yiguolei
approved these changes
Feb 4, 2026
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Cherry-picked from #60181