Expand description
ParquetFileReaderFactory and DefaultParquetFileReaderFactory for
low level control of parquet file readers
Structs§
- Cached
Parquet File Reader - Implements [
AsyncFileReader] for a Parquet file in object storage. Reads the file metadata from the [FileMetadataCache], if available, otherwise reads it directly from the file and then updates the cache. - Cached
Parquet File Reader Factory - Implementation of
ParquetFileReaderFactorysupporting the caching of footer and page metadata. Reads and updates the [FileMetadataCache] with the [ParquetMetaData] data. This reader always loads the entire metadata (including page index, unless the file is encrypted), even if not required by the current query, to ensure it is always available for those that need it. - Cached
Parquet Meta Data - Wrapper to implement [
FileMetadata] for [ParquetMetaData]. - Default
Parquet File Reader Factory - Default implementation of
ParquetFileReaderFactory - Parquet
File Reader - Implements [
AsyncFileReader] for a parquet file in object storage.
Traits§
- Parquet
File Reader Factory - Interface for reading parquet files.