title: Unable to start zookeeper
body: <p>I went through full disk space(100%) issue due to which core got corrupted. As I have googled I have removed all snapshots from <code>version-2</code> and <code>datalog/version-2</code>. </p>
  
  <p>Right now <code>/var/zookeeper</code> having only <code>myid</code> file and <code>__backup</code> folder. </p>
  
  <p>While I am trying to start zookeeper I am getting below error</p>
  
  <pre><code>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
  </code></pre>
  
  <p>Could you please help me with this fix.</p>
  
  <p>Thank you.</p>