org.apache.bookkeeper.mledger.impl

Class EntryCacheDefaultEvictionPolicy

java.lang.Object

org.apache.bookkeeper.mledger.impl.EntryCacheDefaultEvictionPolicy

All Implemented Interfaces:

EntryCacheEvictionPolicy

public class EntryCacheDefaultEvictionPolicy
extends Object
implements EntryCacheEvictionPolicy

Default eviction policy.

This policy consider only the bigger caches for doing eviction.

The PercentOfSizeToConsiderForEviction parameter should always be bigger than the cacheEvictionWatermak, otherwisethe eviction cycle will free less memory than what was required.

Constructor Summary

Constructors

Constructor and Description
EntryCacheDefaultEvictionPolicy()

Method Summary

Modifier and Type	Method and Description
void	doEviction(List<EntryCache> caches, long sizeToFree) Perform the cache eviction of at least sizeToFree bytes on the supplied list of caches.

Methods inherited from class java.lang.Object

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

Constructor Detail

EntryCacheDefaultEvictionPolicy

public EntryCacheDefaultEvictionPolicy()

Method Detail

doEviction

public void doEviction(List<EntryCache> caches,
                       long sizeToFree)

Description copied from interface: EntryCacheEvictionPolicy

Perform the cache eviction of at least sizeToFree bytes on the supplied list of caches.

Specified by:

doEviction in interface EntryCacheEvictionPolicy

Parameters:

caches - the list of caches to consider

sizeToFree - the minimum size in bytes to be freed