org.apache.hudi.common.util.collection

Class DiskMap<T extends Serializable,R extends Serializable>

java.lang.Object

org.apache.hudi.common.util.collection.DiskMap<T,R>

Type Parameters:

T - The generic type of the keys

R - The generic type of the values

All Implemented Interfaces:

Iterable<R>, Map<T,R>

Direct Known Subclasses:

BitCaskDiskMap, RocksDbDiskMap

public abstract class DiskMap<T extends Serializable,R extends Serializable>
extends Object
implements Map<T,R>, Iterable<R>

This interface provides the map interface for storing records in disk after they spill over from memory. Used by ExternalSpillableMap.

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Field Summary

Fields

Modifier and Type	Field and Description
protected String	diskMapPath

Constructor Summary

Constructors

Constructor and Description
DiskMap(String basePath, String prefix)

Method Summary

Modifier and Type	Method and Description
void	close() Close and cleanup the Map.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Field Detail

diskMapPath

protected final String diskMapPath

Constructor Detail

DiskMap

public DiskMap(String basePath,
               String prefix)
        throws IOException

Throws:

IOException

Method Detail

close

public void close()

Close and cleanup the Map.