feat(snapshot-backfill): introduce state to snapshot backfill #19720
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hzxa21
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| if self.streams.is_empty() { | ||
| break Poll::Ready(Ok(None)); | ||
| } | ||
| for (vnode, stream) in &mut self.streams { |
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Will polling the streams in vnode order cause starvation or data skew in downstream? Should we use FuturesUnordered instead?
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Changed to use FuturesUnordered in #19936
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