Interface HardwoodContext

All Superinterfaces:

AutoCloseable

public interface HardwoodContext
extends AutoCloseable

Context object that manages shared resources for Parquet file reading.

Holds the thread pool for parallel page decoding, the libdeflate decompressor pool for native GZIP decompression, the decompressor factory, and the MetadataSource installed through builder(), if any.

The context lifecycle is tied to either:

• Hardwood instance (for multi-file usage)
• ParquetFileReader instance (for standalone single-file usage)

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	HardwoodContext.Builder	Builder for a HardwoodContext.

Method Summary

Modifier and Type	Method	Description
static HardwoodContext.Builder	builder()	Starts building a context.
void	close()
static HardwoodContext	create()	Create a new context with a thread pool sized to available processors.
static HardwoodContext	create(int threads)	Create a new context with a thread pool of the specified size.
ExecutorService	executor()	Get the executor service for parallel operations.

Method Details

executor

ExecutorService executor()

Get the executor service for parallel operations.

close

void close()

Specified by:

close in interface AutoCloseable

create

static HardwoodContext create()

Create a new context with a thread pool sized to available processors.

create

static HardwoodContext create(int threads)

Create a new context with a thread pool of the specified size.

builder

@Experimental
static HardwoodContext.Builder builder()

Starts building a context.

try (HardwoodContext context = HardwoodContext.builder()
        .threads(16)
        .metadataSource(source)
        .build()) {
    // every reader opened against context takes its footers from source
}