org.apache.ratis.server.raftlog.segmented

类 CacheInvalidationPolicy.CacheInvalidationPolicyDefault

java.lang.Object

org.apache.ratis.server.raftlog.segmented.CacheInvalidationPolicy.CacheInvalidationPolicyDefault

所有已实现的接口:

CacheInvalidationPolicy

封闭接口:

CacheInvalidationPolicy

public static class CacheInvalidationPolicy.CacheInvalidationPolicyDefault
extends Object
implements CacheInvalidationPolicy

嵌套类概要

从接口继承的嵌套类/接口 org.apache.ratis.server.raftlog.segmented.CacheInvalidationPolicy

CacheInvalidationPolicy.CacheInvalidationPolicyDefault

构造器概要

构造器

构造器和说明
CacheInvalidationPolicyDefault()

方法概要

限定符和类型	方法和说明
List<LogSegment>	evict(long[] followerNextIndices, long safeEvictIndex, long lastAppliedIndex, org.apache.ratis.server.raftlog.segmented.SegmentedRaftLogCache.LogSegmentList segments, int maxCachedSegments) Determine which log segments should evict their log entry cache

从类继承的方法 java.lang.Object

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

构造器详细资料

CacheInvalidationPolicyDefault

public CacheInvalidationPolicyDefault()

方法详细资料

evict

public List<LogSegment> evict(long[] followerNextIndices,
                              long safeEvictIndex,
                              long lastAppliedIndex,
                              org.apache.ratis.server.raftlog.segmented.SegmentedRaftLogCache.LogSegmentList segments,
                              int maxCachedSegments)

从接口复制的说明: CacheInvalidationPolicy

Determine which log segments should evict their log entry cache

指定者:

evict 在接口中 CacheInvalidationPolicy

参数:

followerNextIndices - the next indices of all the follower peers. Null if the local peer is not a leader.

safeEvictIndex - the index up to which cache can be evicted. This index depends on two factors: 1. the largest index belonging to a closed segment 2. the latest snapshotIndex Logs with endIndex less than the max of these two indices can be evicted.

lastAppliedIndex - the last index that has been applied to state machine

segments - The list of log segments. The segments should be sorted in ascending order according to log index.

maxCachedSegments - the max number of segments with cached log entries

返回:

the log segments that should evict cache