无法启动zookeeper

Question

由于内核损坏，我遇到了磁盘空间已满(100%)的问题。正如我用谷歌搜索的那样，我已经从version-2和datalog/version-2中删除了所有快照。

现在/var/zookeeper只有myid文件和__backup文件夹。

当我尝试启动zookeeper时，我遇到了下面的错误

2016-06-12 12:43:36,512 [myid:4] - ERROR [main:FileTxnSnapLog@210] - Parent /search/cluster1/overseer/queue missing for /search/cluster1/overseer/queue/qn-0000000288
2016-06-12 12:43:36,514 [myid:4] - ERROR [main:QuorumPeer@453] - Unable to load database on disk
java.io.IOException: Failed to process transaction type: 1 error: KeeperErrorCode = NoNode for /search/cluster1/overseer/queue
        at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:153)
        at org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:223)
        at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:417)
        at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:409)
        at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:151)
        at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:111)
        at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78)
Caused by: org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /search/cluster1/overseer/queue
        at org.apache.zookeeper.server.persistence.FileTxnSnapLog.processTransaction(FileTxnSnapLog.java:211)
        at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:151)
        ... 6 more
2016-06-12 12:43:36,514 [myid:4] - ERROR [main:QuorumPeerMain@89] - Unexpected exception, exiting abnormally
java.lang.RuntimeException: Unable to run quorum server
        at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:454)
        at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:409)
        at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:151)
        at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:111)
        at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78)
Caused by: java.io.IOException: Failed to process transaction type: 1 error: KeeperErrorCode = NoNode for /search/cluster1/overseer/queue
        at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:153)
        at org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:223)
        at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:417)
        ... 4 more
Caused by: org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /search/cluster1/overseer/queue
        at org.apache.zookeeper.server.persistence.FileTxnSnapLog.processTransaction(FileTxnSnapLog.java:211)
        at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:151)
        ... 6 more

你能帮我解决这个问题吗？

谢谢。

Answer 1

显然，你的zookeeper似乎处于一种不一致的状态，它试图找到一个丢失的节点。查看zoo.cfg文件，查看ZooKeeper的dataDir设置是否一致。

或者这可能是Zookeeper的一个已知问题。https://issues.apache.org/jira/browse/ZOOKEEPER-1813