Package org.apache.datafusion

Class CacheManagerOptions.Builder

java.lang.Object

org.apache.datafusion.CacheManagerOptions.Builder

Enclosing class:

CacheManagerOptions

public static final class CacheManagerOptions.Builder
extends Object

Builder for CacheManagerOptions.

Method Summary

Modifier and Type	Method	Description
CacheManagerOptions	build()
CacheManagerOptions.Builder	fileMetadataCache(long maxBytes)	Enable the file-embedded metadata cache (parquet footers, page metadata) with the given byte cap.
CacheManagerOptions.Builder	fileStatisticsCache(boolean enabled)	Enable the file-statistics cache (per-file row counts / column statistics).
CacheManagerOptions.Builder	listFilesCache(long maxBytes, Duration ttl)	Enable the list-files cache with the given byte cap and TTL.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

fileMetadataCache

public CacheManagerOptions.Builder fileMetadataCache(long maxBytes)

Enable the file-embedded metadata cache (parquet footers, page metadata) with the given byte cap. The cap is the budget the upstream DefaultFilesMetadataCache uses to evict entries; 0 is legal and means "construct the cache but with a 0-byte budget" (effectively disabled but observable in stats).

Throws:

IllegalArgumentException - if maxBytes is negative.

listFilesCache

public CacheManagerOptions.Builder listFilesCache(long maxBytes,
 Duration ttl)

Enable the list-files cache with the given byte cap and TTL. Pass null for ttl to use upstream's "no expiration" semantics (entries are evicted only by capacity pressure).

Throws:

IllegalArgumentException - if maxBytes is negative or ttl is negative.

fileStatisticsCache

public CacheManagerOptions.Builder fileStatisticsCache(boolean enabled)

Enable the file-statistics cache (per-file row counts / column statistics). When enabled is true, the upstream DefaultFileStatisticsCache is installed. When false, the slot is explicitly set to disabled in the wire format — the same end-state as never calling this setter, but distinguishable for testing.

build

public CacheManagerOptions build()