ZooKeeper 未启动，因为acceptedEpoch 小于currentEpoch

Question

我有zookeeper.version=3.4.10，我看到：

https://issues.apache.org/jira/browse/ZOOKEEPER-2307

然而，该问题仍处于悬而未决的状态。问题的出现是因为磁盘空间已满。现在我删除了一些日志并释放了空间，我想启动zookeeper，但由于此错误它不会启动：

[2019-01-22 09:07:32,646] ERROR Unable to load database on disk 
(org.apache.zookeeper.server.quorum.QuorumPeer)
java.io.IOException: The accepted epoch, 13 is less than the current epoch, 
14
    at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:645)
    at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:591)
    at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:164)
    at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:111)
    at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78)
[2019-01-22 09:07:32,648] ERROR Unexpected exception, exiting abnormally 
(org.apache.zookeeper.server.quorum.QuorumPeerMain)
java.lang.RuntimeException: Unable to run quorum server
    at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:649)
    at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:591)
    at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:164)
    at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:111)
    at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78)
Caused by: java.io.IOException: The accepted epoch, 13 is less than the current epoch, 14
    at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:645)
    ... 4 more

我是否必须修补它（我不确定是否已准备好修补程序），或者我可以修复动物园管理员数据（例如，使其以某种方式接受新纪元）并继续使用相同的版本吗？

Answer 1

它有效，我刚刚做了：

cp currentEpoch acceptedEpoch

在zookeeper数据目录中，它启动没有任何问题。