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DeltaReaderExecutionOptions

delta_arrow_reader

Struct DeltaReaderExecutionOptions 

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pub struct DeltaReaderExecutionOptions { /* private fields */ }
Expand description

Bounded execution settings for one Delta scan.

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impl DeltaReaderExecutionOptions

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pub const fn new() -> Self

Returns the baseline execution settings.

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pub const fn reader_backend(&self) -> DeltaReaderBackend

Returns the selected data-file reader backend.

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pub const fn max_concurrent_file_reads_per_scan(&self) -> Option<usize>

Returns the optional scan-wide file-read limit.

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pub const fn max_concurrent_file_reads_per_partition(&self) -> usize

Returns the per-partition file-read limit.

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pub const fn output_buffer_capacity_per_partition(&self) -> usize

Returns the per-partition output buffer capacity.

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pub const fn native_async_prefetch_file_count_per_partition(&self) -> usize

Returns the NativeAsync per-partition file prefetch depth.

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pub const fn parquet_metadata_size_hint(&self) -> Option<usize>

Returns the NativeAsync Parquet metadata size hint.

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pub const fn parquet_full_file_read_threshold(&self) -> Option<usize>

Returns the NativeAsync full-file read threshold.

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pub fn with_reader_backend( self, value: DeltaReaderBackend, ) -> Result<Self, DeltaReaderError>

Selects a data-file reader backend.

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pub fn with_max_concurrent_file_reads_per_scan( self, value: Option<usize>, ) -> Result<Self, DeltaReaderError>

Sets or clears the scan-wide file-read limit.

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pub fn with_max_concurrent_file_reads_per_partition( self, value: usize, ) -> Result<Self, DeltaReaderError>

Sets the per-partition file-read limit.

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pub fn with_output_buffer_capacity_per_partition( self, value: usize, ) -> Result<Self, DeltaReaderError>

Sets the per-partition output buffer capacity.

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pub fn with_native_async_prefetch_file_count_per_partition( self, value: usize, ) -> Result<Self, DeltaReaderError>

Sets the NativeAsync per-partition file prefetch depth.

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pub fn with_parquet_metadata_size_hint( self, value: Option<usize>, ) -> Result<Self, DeltaReaderError>

Sets or clears the NativeAsync Parquet metadata size hint.

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pub fn with_parquet_full_file_read_threshold( self, value: Option<usize>, ) -> Result<Self, DeltaReaderError>

Sets or clears the NativeAsync full-file read threshold.

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pub fn validate(&self) -> Result<(), DeltaReaderError>

Validates all execution bounds.

Trait Implementations§

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impl Clone for DeltaReaderExecutionOptions

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fn clone(&self) -> DeltaReaderExecutionOptions

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for DeltaReaderExecutionOptions

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impl Debug for DeltaReaderExecutionOptions

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for DeltaReaderExecutionOptions

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Eq for DeltaReaderExecutionOptions

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impl PartialEq for DeltaReaderExecutionOptions

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fn eq(&self, other: &DeltaReaderExecutionOptions) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for DeltaReaderExecutionOptions

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