Optionaloptions: ReaderOptions | null
Options for reading Parquet data. Optional keys include:
batchSize: The number of rows in each batch. If not provided, the upstream parquet
default is 1024.rowGroups: Only read data from the provided row group indexes.limit: Provide a limit to the number of rows to be read.offset: Provide an offset to skip over the given number of rows.columns: The column names from the file to read.Create a readable stream of record batches.
Each item in the stream will be a RecordBatch.
Optionaloptions: ReaderOptions | null
Options for reading Parquet data. Optional keys include:
batchSize: The number of rows in each batch. If not provided, the upstream parquet
default is 1024.rowGroups: Only read data from the provided row group indexes.limit: Provide a limit to the number of rows to be read.offset: Provide an offset to skip over the given number of rows.columns: The column names from the file to read.concurrency: The number of concurrent requests to makeStaticfromConstruct a ParquetFile from a new Blob or File handle.
Safety: Do not use this in a multi-threaded environment,
(transitively depends on !Send web_sys::Blob)
Staticfrom
Read from the Parquet file in an async fashion.