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HBase, mail # user - ERROR zookeeper.RecoverableZooKeeper: ZooKeeper exists failed after 3 retries


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ERROR zookeeper.RecoverableZooKeeper: ZooKeeper exists failed after 3 retries
Bing Li 2012-02-12, 21:00
Dear all,

I am a new learner of HBase. I tried to set up my HBase on a
pseudo-distributed HDFS.

After starting HDFS by running ./start-dfs.sh and ./start-hbase.sh, I
started the HBase shell.

   ./hbase shell

It was started properly. However, when I typed the command, status, as
follows.

   hbase(main):001:0> status

It got the following exception. Since I had very limited experiences to use
HBase, I could not figure out what the problem was.

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in
[jar:file:/opt/hbase-0.92.0/lib/slf4j-log4j12-1.5.8.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in
[jar:file:/opt/hadoop-1.0.0/lib/slf4j-log4j12-1.4.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an
explanation.
12/02/13 04:34:01 ERROR zookeeper.RecoverableZooKeeper: ZooKeeper exists
failed after 3 retries
12/02/13 04:34:01 WARN zookeeper.ZKUtil: hconnection Unable to set watcher
on znode /hbase/master
org.apache.zookeeper.KeeperException$ConnectionLossException:
KeeperErrorCode = ConnectionLoss for /hbase/master
        at
org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
        at
org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
        at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1003)
        at
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:154)
        at
org.apache.hadoop.hbase.zookeeper.ZKUtil.watchAndCheckExists(ZKUtil.java:226)
        at
org.apache.hadoop.hbase.zookeeper.ZooKeeperNodeTracker.start(ZooKeeperNodeTracker.java:76)
        at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.setupZookeeperTrackers(HConnectionManager.java:580)
        at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.<init>(HConnectionManager.java:569)
        at
org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:186)
        at
org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:98)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
        at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at
org.jruby.javasupport.JavaConstructor.newInstanceDirect(JavaConstructor.java:275)
        at
org.jruby.java.invokers.ConstructorInvoker.call(ConstructorInvoker.java:91)
        at
org.jruby.java.invokers.ConstructorInvoker.call(ConstructorInvoker.java:178)
        at
org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:322)
        at
org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:178)
        at
org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:182)
        at
org.jruby.java.proxies.ConcreteJavaProxy$2.call(ConcreteJavaProxy.java:47)
        at
org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:322)

Could you please give me a hand? Thanks so much!

Best regards,
Bing