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END_SCAN_LOOKAHEAD

datafusion_datasource::boundary_stream

Constant END_SCAN_LOOKAHEAD 

Source 
pub const END_SCAN_LOOKAHEAD: u64 = _; // 16_384u64
Expand description

How far past raw_end the initial bounded fetch covers. If the terminating newline is not found within this window, ScanningLastTerminator issues successive same-sized GETs until the newline is located or EOF is reached.