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FetchNextBehaviour

arrow_avro::reader::async_reader

Enum FetchNextBehaviour 

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enum FetchNextBehaviour {
    ReadSyncMarker,
    DecodeVLQHeader,
    ContinueDecoding,
}

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ReadSyncMarker

Initial read: scan for sync marker, then move to decoding blocks

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DecodeVLQHeader

Parse VLQ header bytes one at a time until Data state, then continue decoding

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ContinueDecoding

Continue decoding the current block with the fetched data

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