add dynamic batch for fetch

雾聪

2024-04-19 63a70a00f7c9f162e8d7b3e330516438fb8cd87b

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<?xml version="1.0" encoding="UTF-8"?>
<Bucket
   uuid = "A434E096-73C6-4C03-86F5-FAA8A72D79B0"
   type = "1"
   version = "2.0">
</Bucket>