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 问题:一个 ZK启动不了 ,  在 zookeeper.out  中 报了如下的 异常

2020-01-21 18:39:59,277 [myid:2] - ERROR [main:QuorumPeer@557] - Unable to load database on disk
java.io.IOException: Found T1 in /export/servers/zookeeper-3.4.9/zkdatas/version-2/currentEpoch
	at org.apache.zookeeper.server.quorum.QuorumPeer.readLongFromFile(QuorumPeer.java:1219)
	at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:516)
	at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:500)
	at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:153)
	at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:111)
	at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78)
2020-01-21 18:39:59,290 [myid:2] - ERROR [main:QuorumPeerMain@89] - Unexpected exception, exiting abnormally
java.lang.RuntimeException: Unable to run quorum server 
	at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:558)
	at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:500)
	at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:153)
	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: Found T1 in /export/servers/zookeeper-3.4.9/zkdatas/version-2/currentEpoch
	at org.apache.zookeeper.server.quorum.QuorumPeer.readLongFromFile(QuorumPeer.java:1219)
	at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:516)
	... 4 more

解决 :删除  /export/servers/zookeeper-3.4.9/zkdatas/version-2  下的 所有文件,重新启动

/export/servers/zookeeper-3.4.9/zkdatas/version-2

 查看启动 状况:

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