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Posted to dev@hbase.apache.org by Bo Fu <bo...@uchicago.edu> on 2015/04/21 20:38:41 UTC

Base can't start due to Zookeeper

Hi,

I’m a beginner of HBase. I’m recently deploying HBase 1.0.0 onto Emulab using Hadoop 2.6.0
When I type bin/start-hbase.sh, Hbase and HRegionservers starts and then shut down. The master log are as follows:

2015-04-21 12:13:58,607 INFO  [main-SendThread(pc439.emulab.net<http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Opening socket connection to server pc439.emulab.net/155.98.38.39:2181<http://pc439.emulab.net/155.98.38.39:2181>. Will not attempt to authenticate using SASL (unknown error)
2015-04-21 12:13:58,608 INFO  [main-SendThread(pc439.emulab.net<http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Socket connection established to pc439.emulab.net/155.98.38.39:2181<http://pc439.emulab.net/155.98.38.39:2181>, initiating session
2015-04-21 12:13:58,609 INFO  [main-SendThread(pc439.emulab.net<http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Unable to read additional data from server sessionid 0x0, likely server has closed socket, closing socket connection and attempting reconnect
2015-04-21 12:13:59,513 INFO  [main-SendThread(pc440.emulab.net<http://pc440.emulab.net>:2181)] zookeeper.ClientCnxn: Opening socket connection to server pc440.emulab.net/155.98.38.40:2181<http://pc440.emulab.net/155.98.38.40:2181>. Will not attempt to authenticate using SASL (unknown error)
2015-04-21 12:13:59,513 INFO  [main-SendThread(pc440.emulab.net<http://pc440.emulab.net>:2181)] zookeeper.ClientCnxn: Socket connection established to pc440.emulab.net/155.98.38.40:2181<http://pc440.emulab.net/155.98.38.40:2181>, initiating session
2015-04-21 12:13:59,514 INFO  [main-SendThread(pc440.emulab.net<http://pc440.emulab.net>:2181)] zookeeper.ClientCnxn: Unable to read additional data from server sessionid 0x0, likely server has closed socket, closing socket connection and attempting reconnect
2015-04-21 12:14:01,531 INFO  [main-SendThread(pc439.emulab.net<http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Opening socket connection to server pc439.emulab.net/155.98.38.39:2181<http://pc439.emulab.net/155.98.38.39:2181>. Will not attempt to authenticate using SASL (unknown error)
2015-04-21 12:14:01,531 INFO  [main-SendThread(pc439.emulab.net<http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Socket connection established to pc439.emulab.net/155.98.38.39:2181<http://pc439.emulab.net/155.98.38.39:2181>, initiating session
2015-04-21 12:14:01,532 INFO  [main-SendThread(pc439.emulab.net<http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Unable to read additional data from server sessionid 0x0, likely server has closed socket, closing socket connection and attempting reconnect
2015-04-21 12:14:01,633 WARN  [main] zookeeper.RecoverableZooKeeper: Possibly transient ZooKeeper, quorum=pc439.emulab.net<http://pc439.emulab.net>:2181,pc440.emulab.net<http://pc440.emulab.net>:2181, exception=org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase
2015-04-21 12:14:01,633 ERROR [main] zookeeper.RecoverableZooKeeper: ZooKeeper create failed after 4 attempts
2015-04-21 12:14:01,634 ERROR [main] master.HMasterCommandLine: Master exiting
java.lang.RuntimeException: Failed construction of Master: class org.apache.hadoop.hbase.master.HMaster
        at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:1982)
        at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:198)
        at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:139)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
        at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)
        at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:1996)
Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
        at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:783)
        at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.createNonSequential(RecoverableZooKeeper.java:512)
        at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.create(RecoverableZooKeeper.java:491)
        at org.apache.hadoop.hbase.zookeeper.ZKUtil.createWithParents(ZKUtil.java:1252)
        at org.apache.hadoop.hbase.zookeeper.ZKUtil.createWithParents(ZKUtil.java:1230)
        at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.createBaseZNodes(ZooKeeperWatcher.java:174)
        at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:167)

My Hbase-site.xml is:
<configuration>
  <property>
    <name>hbase.master</name>
    <value>10.10.10.2:60000</value>
  </property>
  <property>
    <name>hbase.rootdir</name>
    <value>hdfs://hadoopmaster:9000/hbase</value>
  </property>
  <property>
    <name>hbase.zookeeper.property.dataDir</name>
    <value>/proj/ucare/bo/hadoop_data/zookeeper</value>
  </property>
  <property>
    <name>hbase.zookeeper.quorum</name>
    <value>pc440.emulab.net<http://pc440.emulab.net>,pc439.emulab.net<http://pc439.emulab.net></value>
    <description>The directory shared by RegionServers.
</description>
  </property>
  <property>
    <name>hbase.cluster.distributed</name>
    <value>true</value>
  </property>
  <property>
    <name>dfs.replication</name>
    <value>1</value>
  </property>
</configuration>

The regionservers file is:

BF@pc440.emulab.net<ma...@pc440.emulab.net>
BF@pc439.emulab.net<ma...@pc439.emulab.net>

Someone could tell me how to fix it?

Thanks a lot!

Bo

Re: Base can't start due to Zookeeper

Posted by Bo Fu <bo...@uchicago.edu>.
Exactly! I added one more zookeeper and it just worked. Thank Jinal and Ted

Bo


> On Apr 21, 2015, at 2:25 PM, Jinal Shah <ji...@gmail.com> wrote:
> 
> You only have 2 zookeeper nodes in your quoram. You need atleast 3 nodes.
> That's your problem.
> 
> On Tue, Apr 21, 2015 at 12:18 PM Ted Yu <yu...@gmail.com> wrote:
> 
>> bq. <value>pc440.emulab.net<http://pc440.emulab.net>,pc439.emulab.net<
>> http://pc439.emulab.net></value>
>> 
>> Please confirm whether the above is the actual content in hbase-site.xml
>> Looks like the quorum is badly formatted.
>> 
>> Cheers
>> 
>> On Tue, Apr 21, 2015 at 11:38 AM, Bo Fu <bo...@uchicago.edu> wrote:
>> 
>>> Hi,
>>> 
>>> I’m a beginner of HBase. I’m recently deploying HBase 1.0.0 onto Emulab
>>> using Hadoop 2.6.0
>>> When I type bin/start-hbase.sh, Hbase and HRegionservers starts and then
>>> shut down. The master log are as follows:
>>> 
>>> 2015-04-21 12:13:58,607 INFO  [main-SendThread(pc439.emulab.net<
>>> http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Opening socket
>>> connection to server pc439.emulab.net/155.98.38.39:2181<
>>> http://pc439.emulab.net/155.98.38.39:2181>. Will not attempt to
>>> authenticate using SASL (unknown error)
>>> 2015-04-21 12:13:58,608 INFO  [main-SendThread(pc439.emulab.net<
>>> http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Socket connection
>>> established to pc439.emulab.net/155.98.38.39:2181<
>>> http://pc439.emulab.net/155.98.38.39:2181>, initiating session
>>> 2015-04-21 12:13:58,609 INFO  [main-SendThread(pc439.emulab.net<
>>> http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Unable to read
>>> additional data from server sessionid 0x0, likely server has closed
>> socket,
>>> closing socket connection and attempting reconnect
>>> 2015-04-21 12:13:59,513 INFO  [main-SendThread(pc440.emulab.net<
>>> http://pc440.emulab.net>:2181)] zookeeper.ClientCnxn: Opening socket
>>> connection to server pc440.emulab.net/155.98.38.40:2181<
>>> http://pc440.emulab.net/155.98.38.40:2181>. Will not attempt to
>>> authenticate using SASL (unknown error)
>>> 2015-04-21 12:13:59,513 INFO  [main-SendThread(pc440.emulab.net<
>>> http://pc440.emulab.net>:2181)] zookeeper.ClientCnxn: Socket connection
>>> established to pc440.emulab.net/155.98.38.40:2181<
>>> http://pc440.emulab.net/155.98.38.40:2181>, initiating session
>>> 2015-04-21 12:13:59,514 INFO  [main-SendThread(pc440.emulab.net<
>>> http://pc440.emulab.net>:2181)] zookeeper.ClientCnxn: Unable to read
>>> additional data from server sessionid 0x0, likely server has closed
>> socket,
>>> closing socket connection and attempting reconnect
>>> 2015-04-21 12:14:01,531 INFO  [main-SendThread(pc439.emulab.net<
>>> http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Opening socket
>>> connection to server pc439.emulab.net/155.98.38.39:2181<
>>> http://pc439.emulab.net/155.98.38.39:2181>. Will not attempt to
>>> authenticate using SASL (unknown error)
>>> 2015-04-21 12:14:01,531 INFO  [main-SendThread(pc439.emulab.net<
>>> http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Socket connection
>>> established to pc439.emulab.net/155.98.38.39:2181<
>>> http://pc439.emulab.net/155.98.38.39:2181>, initiating session
>>> 2015-04-21 12:14:01,532 INFO  [main-SendThread(pc439.emulab.net<
>>> http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Unable to read
>>> additional data from server sessionid 0x0, likely server has closed
>> socket,
>>> closing socket connection and attempting reconnect
>>> 2015-04-21 12:14:01,633 WARN  [main] zookeeper.RecoverableZooKeeper:
>>> Possibly transient ZooKeeper, quorum=pc439.emulab.net<
>>> http://pc439.emulab.net>:2181,pc440.emulab.net<http://pc440.emulab.net
>>> :2181,
>>> exception=org.apache.zookeeper.KeeperException$ConnectionLossException:
>>> KeeperErrorCode = ConnectionLoss for /hbase
>>> 2015-04-21 12:14:01,633 ERROR [main] zookeeper.RecoverableZooKeeper:
>>> ZooKeeper create failed after 4 attempts
>>> 2015-04-21 12:14:01,634 ERROR [main] master.HMasterCommandLine: Master
>>> exiting
>>> java.lang.RuntimeException: Failed construction of Master: class
>>> org.apache.hadoop.hbase.master.HMaster
>>>        at
>>> org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:1982)
>>>        at
>>> 
>> org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:198)
>>>        at
>>> 
>> org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:139)
>>>        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
>>>        at
>>> 
>> org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)
>>>        at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:1996)
>>> Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException:
>>> KeeperErrorCode = ConnectionLoss for /hbase
>>>        at
>>> org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
>>>        at
>>> org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
>>>        at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:783)
>>>        at
>>> 
>> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.createNonSequential(RecoverableZooKeeper.java:512)
>>>        at
>>> 
>> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.create(RecoverableZooKeeper.java:491)
>>>        at
>>> 
>> org.apache.hadoop.hbase.zookeeper.ZKUtil.createWithParents(ZKUtil.java:1252)
>>>        at
>>> 
>> org.apache.hadoop.hbase.zookeeper.ZKUtil.createWithParents(ZKUtil.java:1230)
>>>        at
>>> 
>> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.createBaseZNodes(ZooKeeperWatcher.java:174)
>>>        at
>>> 
>> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:167)
>>> 
>>> My Hbase-site.xml is:
>>> <configuration>
>>>  <property>
>>>    <name>hbase.master</name>
>>>    <value>10.10.10.2:60000</value>
>>>  </property>
>>>  <property>
>>>    <name>hbase.rootdir</name>
>>>    <value>hdfs://hadoopmaster:9000/hbase</value>
>>>  </property>
>>>  <property>
>>>    <name>hbase.zookeeper.property.dataDir</name>
>>>    <value>/proj/ucare/bo/hadoop_data/zookeeper</value>
>>>  </property>
>>>  <property>
>>>    <name>hbase.zookeeper.quorum</name>
>>>    <value>pc440.emulab.net<http://pc440.emulab.net>,pc439.emulab.net<
>>> http://pc439.emulab.net></value>
>>>    <description>The directory shared by RegionServers.
>>> </description>
>>>  </property>
>>>  <property>
>>>    <name>hbase.cluster.distributed</name>
>>>    <value>true</value>
>>>  </property>
>>>  <property>
>>>    <name>dfs.replication</name>
>>>    <value>1</value>
>>>  </property>
>>> </configuration>
>>> 
>>> The regionservers file is:
>>> 
>>> BF@pc440.emulab.net<ma...@pc440.emulab.net>
>>> BF@pc439.emulab.net<ma...@pc439.emulab.net>
>>> 
>>> Someone could tell me how to fix it?
>>> 
>>> Thanks a lot!
>>> 
>>> Bo
>>> 
>>> 
>>

Re: Base can't start due to Zookeeper

Posted by Jinal Shah <ji...@gmail.com>.
You only have 2 zookeeper nodes in your quoram. You need atleast 3 nodes.
That's your problem.

On Tue, Apr 21, 2015 at 12:18 PM Ted Yu <yu...@gmail.com> wrote:

> bq. <value>pc440.emulab.net<http://pc440.emulab.net>,pc439.emulab.net<
> http://pc439.emulab.net></value>
>
> Please confirm whether the above is the actual content in hbase-site.xml
> Looks like the quorum is badly formatted.
>
> Cheers
>
> On Tue, Apr 21, 2015 at 11:38 AM, Bo Fu <bo...@uchicago.edu> wrote:
>
> > Hi,
> >
> > I’m a beginner of HBase. I’m recently deploying HBase 1.0.0 onto Emulab
> > using Hadoop 2.6.0
> > When I type bin/start-hbase.sh, Hbase and HRegionservers starts and then
> > shut down. The master log are as follows:
> >
> > 2015-04-21 12:13:58,607 INFO  [main-SendThread(pc439.emulab.net<
> > http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Opening socket
> > connection to server pc439.emulab.net/155.98.38.39:2181<
> > http://pc439.emulab.net/155.98.38.39:2181>. Will not attempt to
> > authenticate using SASL (unknown error)
> > 2015-04-21 12:13:58,608 INFO  [main-SendThread(pc439.emulab.net<
> > http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Socket connection
> > established to pc439.emulab.net/155.98.38.39:2181<
> > http://pc439.emulab.net/155.98.38.39:2181>, initiating session
> > 2015-04-21 12:13:58,609 INFO  [main-SendThread(pc439.emulab.net<
> > http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Unable to read
> > additional data from server sessionid 0x0, likely server has closed
> socket,
> > closing socket connection and attempting reconnect
> > 2015-04-21 12:13:59,513 INFO  [main-SendThread(pc440.emulab.net<
> > http://pc440.emulab.net>:2181)] zookeeper.ClientCnxn: Opening socket
> > connection to server pc440.emulab.net/155.98.38.40:2181<
> > http://pc440.emulab.net/155.98.38.40:2181>. Will not attempt to
> > authenticate using SASL (unknown error)
> > 2015-04-21 12:13:59,513 INFO  [main-SendThread(pc440.emulab.net<
> > http://pc440.emulab.net>:2181)] zookeeper.ClientCnxn: Socket connection
> > established to pc440.emulab.net/155.98.38.40:2181<
> > http://pc440.emulab.net/155.98.38.40:2181>, initiating session
> > 2015-04-21 12:13:59,514 INFO  [main-SendThread(pc440.emulab.net<
> > http://pc440.emulab.net>:2181)] zookeeper.ClientCnxn: Unable to read
> > additional data from server sessionid 0x0, likely server has closed
> socket,
> > closing socket connection and attempting reconnect
> > 2015-04-21 12:14:01,531 INFO  [main-SendThread(pc439.emulab.net<
> > http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Opening socket
> > connection to server pc439.emulab.net/155.98.38.39:2181<
> > http://pc439.emulab.net/155.98.38.39:2181>. Will not attempt to
> > authenticate using SASL (unknown error)
> > 2015-04-21 12:14:01,531 INFO  [main-SendThread(pc439.emulab.net<
> > http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Socket connection
> > established to pc439.emulab.net/155.98.38.39:2181<
> > http://pc439.emulab.net/155.98.38.39:2181>, initiating session
> > 2015-04-21 12:14:01,532 INFO  [main-SendThread(pc439.emulab.net<
> > http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Unable to read
> > additional data from server sessionid 0x0, likely server has closed
> socket,
> > closing socket connection and attempting reconnect
> > 2015-04-21 12:14:01,633 WARN  [main] zookeeper.RecoverableZooKeeper:
> > Possibly transient ZooKeeper, quorum=pc439.emulab.net<
> > http://pc439.emulab.net>:2181,pc440.emulab.net<http://pc440.emulab.net
> >:2181,
> > exception=org.apache.zookeeper.KeeperException$ConnectionLossException:
> > KeeperErrorCode = ConnectionLoss for /hbase
> > 2015-04-21 12:14:01,633 ERROR [main] zookeeper.RecoverableZooKeeper:
> > ZooKeeper create failed after 4 attempts
> > 2015-04-21 12:14:01,634 ERROR [main] master.HMasterCommandLine: Master
> > exiting
> > java.lang.RuntimeException: Failed construction of Master: class
> > org.apache.hadoop.hbase.master.HMaster
> >         at
> > org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:1982)
> >         at
> >
> org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:198)
> >         at
> >
> org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:139)
> >         at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> >         at
> >
> org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)
> >         at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:1996)
> > Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException:
> > KeeperErrorCode = ConnectionLoss for /hbase
> >         at
> > org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
> >         at
> > org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
> >         at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:783)
> >         at
> >
> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.createNonSequential(RecoverableZooKeeper.java:512)
> >         at
> >
> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.create(RecoverableZooKeeper.java:491)
> >         at
> >
> org.apache.hadoop.hbase.zookeeper.ZKUtil.createWithParents(ZKUtil.java:1252)
> >         at
> >
> org.apache.hadoop.hbase.zookeeper.ZKUtil.createWithParents(ZKUtil.java:1230)
> >         at
> >
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.createBaseZNodes(ZooKeeperWatcher.java:174)
> >         at
> >
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:167)
> >
> > My Hbase-site.xml is:
> > <configuration>
> >   <property>
> >     <name>hbase.master</name>
> >     <value>10.10.10.2:60000</value>
> >   </property>
> >   <property>
> >     <name>hbase.rootdir</name>
> >     <value>hdfs://hadoopmaster:9000/hbase</value>
> >   </property>
> >   <property>
> >     <name>hbase.zookeeper.property.dataDir</name>
> >     <value>/proj/ucare/bo/hadoop_data/zookeeper</value>
> >   </property>
> >   <property>
> >     <name>hbase.zookeeper.quorum</name>
> >     <value>pc440.emulab.net<http://pc440.emulab.net>,pc439.emulab.net<
> > http://pc439.emulab.net></value>
> >     <description>The directory shared by RegionServers.
> > </description>
> >   </property>
> >   <property>
> >     <name>hbase.cluster.distributed</name>
> >     <value>true</value>
> >   </property>
> >   <property>
> >     <name>dfs.replication</name>
> >     <value>1</value>
> >   </property>
> > </configuration>
> >
> > The regionservers file is:
> >
> > BF@pc440.emulab.net<ma...@pc440.emulab.net>
> > BF@pc439.emulab.net<ma...@pc439.emulab.net>
> >
> > Someone could tell me how to fix it?
> >
> > Thanks a lot!
> >
> > Bo
> >
> >
>

Re: Base can't start due to Zookeeper

Posted by Ted Yu <yu...@gmail.com>.
bq. <value>pc440.emulab.net<http://pc440.emulab.net>,pc439.emulab.net<
http://pc439.emulab.net></value>

Please confirm whether the above is the actual content in hbase-site.xml
Looks like the quorum is badly formatted.

Cheers

On Tue, Apr 21, 2015 at 11:38 AM, Bo Fu <bo...@uchicago.edu> wrote:

> Hi,
>
> I’m a beginner of HBase. I’m recently deploying HBase 1.0.0 onto Emulab
> using Hadoop 2.6.0
> When I type bin/start-hbase.sh, Hbase and HRegionservers starts and then
> shut down. The master log are as follows:
>
> 2015-04-21 12:13:58,607 INFO  [main-SendThread(pc439.emulab.net<
> http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Opening socket
> connection to server pc439.emulab.net/155.98.38.39:2181<
> http://pc439.emulab.net/155.98.38.39:2181>. Will not attempt to
> authenticate using SASL (unknown error)
> 2015-04-21 12:13:58,608 INFO  [main-SendThread(pc439.emulab.net<
> http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Socket connection
> established to pc439.emulab.net/155.98.38.39:2181<
> http://pc439.emulab.net/155.98.38.39:2181>, initiating session
> 2015-04-21 12:13:58,609 INFO  [main-SendThread(pc439.emulab.net<
> http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Unable to read
> additional data from server sessionid 0x0, likely server has closed socket,
> closing socket connection and attempting reconnect
> 2015-04-21 12:13:59,513 INFO  [main-SendThread(pc440.emulab.net<
> http://pc440.emulab.net>:2181)] zookeeper.ClientCnxn: Opening socket
> connection to server pc440.emulab.net/155.98.38.40:2181<
> http://pc440.emulab.net/155.98.38.40:2181>. Will not attempt to
> authenticate using SASL (unknown error)
> 2015-04-21 12:13:59,513 INFO  [main-SendThread(pc440.emulab.net<
> http://pc440.emulab.net>:2181)] zookeeper.ClientCnxn: Socket connection
> established to pc440.emulab.net/155.98.38.40:2181<
> http://pc440.emulab.net/155.98.38.40:2181>, initiating session
> 2015-04-21 12:13:59,514 INFO  [main-SendThread(pc440.emulab.net<
> http://pc440.emulab.net>:2181)] zookeeper.ClientCnxn: Unable to read
> additional data from server sessionid 0x0, likely server has closed socket,
> closing socket connection and attempting reconnect
> 2015-04-21 12:14:01,531 INFO  [main-SendThread(pc439.emulab.net<
> http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Opening socket
> connection to server pc439.emulab.net/155.98.38.39:2181<
> http://pc439.emulab.net/155.98.38.39:2181>. Will not attempt to
> authenticate using SASL (unknown error)
> 2015-04-21 12:14:01,531 INFO  [main-SendThread(pc439.emulab.net<
> http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Socket connection
> established to pc439.emulab.net/155.98.38.39:2181<
> http://pc439.emulab.net/155.98.38.39:2181>, initiating session
> 2015-04-21 12:14:01,532 INFO  [main-SendThread(pc439.emulab.net<
> http://pc439.emulab.net>:2181)] zookeeper.ClientCnxn: Unable to read
> additional data from server sessionid 0x0, likely server has closed socket,
> closing socket connection and attempting reconnect
> 2015-04-21 12:14:01,633 WARN  [main] zookeeper.RecoverableZooKeeper:
> Possibly transient ZooKeeper, quorum=pc439.emulab.net<
> http://pc439.emulab.net>:2181,pc440.emulab.net<http://pc440.emulab.net>:2181,
> exception=org.apache.zookeeper.KeeperException$ConnectionLossException:
> KeeperErrorCode = ConnectionLoss for /hbase
> 2015-04-21 12:14:01,633 ERROR [main] zookeeper.RecoverableZooKeeper:
> ZooKeeper create failed after 4 attempts
> 2015-04-21 12:14:01,634 ERROR [main] master.HMasterCommandLine: Master
> exiting
> java.lang.RuntimeException: Failed construction of Master: class
> org.apache.hadoop.hbase.master.HMaster
>         at
> org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:1982)
>         at
> org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:198)
>         at
> org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:139)
>         at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
>         at
> org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)
>         at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:1996)
> Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException:
> KeeperErrorCode = ConnectionLoss for /hbase
>         at
> org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
>         at
> org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
>         at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:783)
>         at
> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.createNonSequential(RecoverableZooKeeper.java:512)
>         at
> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.create(RecoverableZooKeeper.java:491)
>         at
> org.apache.hadoop.hbase.zookeeper.ZKUtil.createWithParents(ZKUtil.java:1252)
>         at
> org.apache.hadoop.hbase.zookeeper.ZKUtil.createWithParents(ZKUtil.java:1230)
>         at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.createBaseZNodes(ZooKeeperWatcher.java:174)
>         at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:167)
>
> My Hbase-site.xml is:
> <configuration>
>   <property>
>     <name>hbase.master</name>
>     <value>10.10.10.2:60000</value>
>   </property>
>   <property>
>     <name>hbase.rootdir</name>
>     <value>hdfs://hadoopmaster:9000/hbase</value>
>   </property>
>   <property>
>     <name>hbase.zookeeper.property.dataDir</name>
>     <value>/proj/ucare/bo/hadoop_data/zookeeper</value>
>   </property>
>   <property>
>     <name>hbase.zookeeper.quorum</name>
>     <value>pc440.emulab.net<http://pc440.emulab.net>,pc439.emulab.net<
> http://pc439.emulab.net></value>
>     <description>The directory shared by RegionServers.
> </description>
>   </property>
>   <property>
>     <name>hbase.cluster.distributed</name>
>     <value>true</value>
>   </property>
>   <property>
>     <name>dfs.replication</name>
>     <value>1</value>
>   </property>
> </configuration>
>
> The regionservers file is:
>
> BF@pc440.emulab.net<ma...@pc440.emulab.net>
> BF@pc439.emulab.net<ma...@pc439.emulab.net>
>
> Someone could tell me how to fix it?
>
> Thanks a lot!
>
> Bo
>
>