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DeltaScanExecutionOptions

delta_arrow_reader

Struct DeltaScanExecutionOptions 

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

Bounded execution settings for one Delta scan.

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impl DeltaScanExecutionOptions

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pub const fn new() -> Self

Returns the baseline execution settings.

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pub const fn parquet_backend(&self) -> ParquetReaderBackend

Returns the selected Parquet 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_batches_per_partition(&self) -> usize

Returns the number of output batches buffered per partition.

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pub const fn prefetch_files_per_partition(&self) -> usize

Returns the number of future direct Parquet files prepared per partition.

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

Returns the direct Parquet reader’s metadata size hint in bytes.

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

Returns the direct Parquet reader’s full-file read threshold in bytes.

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pub const fn with_parquet_backend( self, parquet_backend: ParquetReaderBackend, ) -> Self

Selects a Parquet reader backend.

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

Sets the per-partition file-read limit.

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pub fn with_output_buffer_batches_per_partition( self, output_buffer_batches: usize, ) -> Result<Self, DeltaReaderError>

Sets the number of output batches buffered per partition.

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pub const fn with_prefetch_files_per_partition( self, prefetch_files: usize, ) -> Self

Sets the number of future direct Parquet files prepared per partition.

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pub fn with_parquet_metadata_size_hint_bytes( self, metadata_size_hint_bytes: Option<usize>, ) -> Result<Self, DeltaReaderError>

Sets or clears the direct Parquet reader’s metadata size hint in bytes.

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pub fn with_parquet_full_file_read_threshold_bytes( self, full_file_read_threshold_bytes: Option<usize>, ) -> Result<Self, DeltaReaderError>

Sets or clears the direct Parquet reader’s full-file read threshold in bytes.

Trait Implementations§

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impl Clone for DeltaScanExecutionOptions

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fn clone(&self) -> DeltaScanExecutionOptions

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 DeltaScanExecutionOptions

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impl Debug for DeltaScanExecutionOptions

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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 DeltaScanExecutionOptions

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fn default() -> Self

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

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impl PartialEq for DeltaScanExecutionOptions

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fn eq(&self, other: &DeltaScanExecutionOptions) -> 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 DeltaScanExecutionOptions

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