Module async_reader

ParquetRecordBatchStreamBuilder: async API for reading Parquet files as RecordBatches

This can be used to decode a Parquet file in streaming fashion (without downloading the whole file at once) from a remote source, such as an object store.

See example on ParquetRecordBatchStreamBuilder::new

Structs

MetadataLoader

An asynchronous interface to load ParquetMetaData from an async source

ParquetRecordBatchStream

An asynchronous Streamof RecordBatch constructed using ParquetRecordBatchStreamBuilder to read parquet files.

Traits

AsyncFileReader

The asynchronous interface used by ParquetRecordBatchStream to read parquet files

MetadataFetch

A data source that can be used with MetadataLoader to load ParquetMetaData

Functions

fetch_parquet_metadataDeprecated

Fetches parquet metadata

Type Aliases

ParquetRecordBatchStreamBuilder

A builder for reading parquet files from an async source as ParquetRecordBatchStream