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From Pavan Sudheendra <pavan0...@gmail.com>
Subject Re: Hbase region server is not communicating with zookeeper and stopping after some time it was started
Date Thu, 22 Aug 2013 14:33:16 GMT
Isn't hbase.zookeeper.quorum suppose to contain only the address of the
HBase master instead of all the region servers?



On Thu, Aug 22, 2013 at 8:01 PM, Pavan Sudheendra <pavan0591@gmail.com>wrote:

> Vamshi and Jay .. Can you both share your /etc/hosts file?
>
> I have the exact same problem .. All my namenode cluster just log this
> connection refused when they are to log something useful for de-bugging..
> But for me HBase region server tries to connect to localhost when i want it
> to connect it to its master..
>
>
> On Thu, Aug 22, 2013 at 7:24 PM, Jay Vyas <jayunit100@gmail.com> wrote:
>
>> Yes this sounds like a zookeeper DNS error.
>>
>> I just ran into these type of issues a few months ago and wrote up my
>> solutions to the 3 main hbase communication/setup errors I got.
>>
>> See if this helps
>> http://jayunit100.blogspot.com/2013/05/debugging-hbase-installation.html
>>
>> Also Make sure iptables are off etc..
>>
>> On Aug 22, 2013, at 6:02 AM, Vamshi Krishna <vamshi2105@gmail.com> wrote:
>>
>> > Hi I setup a hbase cluster of 2 machines.
>> >
>> > Master Machine (vamshi_RS) running both master & Regionserver
>> > slave machine  - Running only Region server.
>> >
>> > After i ran start-hbase.sh all the daemons are starting perfectly but
>> after
>> > some time Regionserver on slave machine  is stopping.
>> >
>> > I analysed the region server log and  below is the log content.
>> > Some how the Region server machine is not able to communicate with the
>> > zookeeper (I guess). Is that the reason..?
>> >
>> > Please look at my hbase-site.xml below (after log content), which is
>> same
>> > in both the machines and kindly let me know the solution for this issue.
>> >
>> >
>> > 2013-08-22 14:03:25,023 INFO org.apache.zookeeper.ZooKeeper: Initiating
>> > client connection, connectString=vamshi_RS:2181 sessionTimeout=180000
>> > watcher=regionserver:60020
>> > 2013-08-22 14:03:25,033 INFO
>> > org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: The identifier
>> of
>> > this process is 7426@vamshi
>> > 2013-08-22 14:03:25,038 INFO org.apache.zookeeper.ClientCnxn: Opening
>> > socket connection to server vamshi_RS/192.168.1.57:2181. Will not
>> attempt
>> > to authenticate using SASL (Unable to locate a login configuration)
>> > 2013-08-22 14:04:28,171 WARN org.apache.zookeeper.ClientCnxn: Session
>> 0x0
>> > for server null, unexpected error, closing socket connection and
>> attempting
>> > reconnect
>> > java.net.ConnectException: Connection timed out
>> >    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>> >    at
>> > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:599)
>> >    at
>> >
>> org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
>> >    at
>> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
>> > 2013-08-22 14:04:28,287 WARN
>> > org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Possibly
>> transient
>> > ZooKeeper exception:
>> > org.apache.zookeeper.KeeperException$ConnectionLossException:
>> > KeeperErrorCode = ConnectionLoss for /hbase/master
>> > 2013-08-22 14:04:28,287 INFO org.apache.hadoop.hbase.util.RetryCounter:
>> > Sleeping 2000ms before retry #1...
>> > 2013-08-22 14:04:29,282 INFO org.apache.zookeeper.ClientCnxn: Opening
>> > socket connection to server vamshi_RS/192.168.1.57:2181. Will not
>> attempt
>> > to authenticate using SASL (Unable to locate a login configuration)
>> > 2013-08-22 14:05:32,425 WARN org.apache.zookeeper.ClientCnxn: Session
>> 0x0
>> > for server null, unexpected error, closing socket connection and
>> attempting
>> > reconnect
>> > java.net.ConnectException: Connection timed out
>> >    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>> >    at
>> > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:599)
>> >    at
>> >
>> org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
>> >    at
>> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
>> > 2013-08-22 14:05:32,526 WARN
>> > org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Possibly
>> transient
>> > ZooKeeper exception:
>> > org.apache.zookeeper.KeeperException$ConnectionLossException:
>> > KeeperErrorCode = ConnectionLoss for /hbase/master
>> > 2013-08-22 14:05:32,526 INFO org.apache.hadoop.hbase.util.RetryCounter:
>> > Sleeping 4000ms before retry #2...
>> > 2013-08-22 14:05:33,526 INFO org.apache.zookeeper.ClientCnxn: Opening
>> > socket connection to server vamshi_RS/192.168.1.57:2181. Will not
>> attempt
>> > to authenticate using SASL (Unable to locate a login configuration)
>> > 2013-08-22 14:06:36,617 WARN org.apache.zookeeper.ClientCnxn: Session
>> 0x0
>> > for server null, unexpected error, closing socket connection and
>> attempting
>> > reconnect
>> > java.net.ConnectException: Connection timed out
>> >    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>> >    at
>> > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:599)
>> >    at
>> >
>> org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
>> >    at
>> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
>> > .
>> > .
>> > .
>> >
>> >
>> > hbase-site.xml:
>> >
>> > <property>
>> >        <name>hbase.rootdir</name>
>> >
>> >
>> <!--value>hdfs://vamshi:54310/home/biginfolabs/BILSftwrs/hbase-0.94.10/data/</value-->
>> >    <value>/home/biginfolabs/BILSftwrs/hbase-0.94.10/hbstmp/</value>
>> >    </property>
>> >
>> >    <property>
>> >        <name>hbase.cluster.distributed</name>
>> >        <value>true</value>
>> >    </property>
>> >    <property>
>> >        <name>hbase.master</name>
>> >        <value>vamshi_RS</value>
>> >    </property>
>> >    <property>
>> >        <name>hbase.zookeeper.property.clientPort</name>
>> >        <value>2181</value>
>> >    </property>
>> >
>> >   <property>
>> >        <name>hbase.hregion.max.filesize</name>
>> >        <value>50</value>
>> >    </property>
>> >
>> >   <property>
>> >        <name>hbase.balancer.period</name>
>> >        <value>60000</value>
>> >    </property>
>> >
>> >    <property>
>> >        <name>hbase.zookeeper.quorum</name>
>> >        <value>vamshi_RS</value>
>> >    </property>
>> >    <property>
>> >        <name>hbase.zookeeper.property.dataDir</name>
>> >        <value>/home/biginfolabs/BILSftwrs/hbase-0.94.10/zkptmp</value>
>> >    </property>
>> >  <property>
>> >    <name>hbase.client.scanner.caching</name>
>> >    <value>1000</value>
>> >    <description>Number of rows that will be fetched when calling next
>> >    </description>
>> >  </property>
>> >  <property>
>> >    <name>hbase.zookeeper.property.maxClientCnxns</name>
>> >    <value>1024</value>
>> >  </property>
>> >
>> > <property>
>> >    <name>hbase.coprocessor.user.region.classes</name>
>> >    <value>com.bil.coproc.ColumnAggregationEndpoint</value>
>> >  </property>
>> >
>> > --
>> > *Regards*
>> > *
>> > Vamshi Krishna
>> > *
>>
>
>
>
> --
> Regards-
> Pavan
>



-- 
Regards-
Pavan

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