zookeeper集群挂了，提示

Hadoop集群意外关机后，zookeeper服务出现停止状态， 日志错误提示如下：

java.io.IOException: Transaction log: /var/lib/zookeeper/version-/log.260010d366 has invalid magic number  !=
        at org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.inStreamCreated(FileTxnLog.java:)
        at org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.createInputArchive(FileTxnLog.java:)
        at org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.goToNextLog(FileTxnLog.java:)
        at org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.init(FileTxnLog.java:)
        at org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.<init>(FileTxnLog.java:)
        at org.apache.zookeeper.server.persistence.FileTxnLog.read(FileTxnLog.java:)
        at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:)
        at org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:)
        at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:)
        at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:)
        at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:)
        at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:)
        at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:)
-- ::, ERROR org.apache.zookeeper.server.quorum.QuorumPeerMain: Unexpected exception, exiting abnormally
java.lang.RuntimeException: Unable to run quorum server
        at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:)
        at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:)
        at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:)
        at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:)
        at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:)
Caused by: java.io.IOException: Transaction log: /var/lib/zookeeper/version-/log.260010d366 has invalid magic number  !=
        at org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.inStreamCreated(FileTxnLog.java:)
        at org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.createInputArchive(FileTxnLog.java:)
        at org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.goToNextLog(FileTxnLog.java:)
        at org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.init(FileTxnLog.java:)
        at org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.<init>(FileTxnLog.java:)
        at org.apache.zookeeper.server.persistence.FileTxnLog.read(FileTxnLog.java:)
        at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:)
        at org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:)
        at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:)

解决办法：

1、找到 ：dataDir=/var/lib/zookeeper

2、进入该目录：将 version-2 文件重命名或者删除都可以

3、在zookeeper实例中删除该机器服务，重新添加实例，重启该服务即可。