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Posted to common-user@hadoop.apache.org by Ved Prakash <me...@gmail.com> on 2008/03/05 07:50:50 UTC
clustering problem
Hi Guys,
I am having problems creating clusters on 2 machines
Machine configuration :
Master : OS: Fedora core 7
hadoop-0.15.2
hadoop-site.xml listing
<configuration>
<property>
<name>fs.default.name</name>
<value>anaconda:50001</value>
</property>
<property>
<name>mapred.job.tracker</name>
<value>anaconda:50002</value>
</property>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
<property>
<name>dfs.secondary.info.port</name>
<value>50003</value>
</property>
<property>
<name>dfs.info.port</name>
<value>50004</value>
</property>
<property>
<name>mapred.job.tracker.info.port</name>
<value>50005</value>
</property>
<property>
<name>tasktracker.http.port</name>
<value>50006</value>
</property>
</configuration>
conf/masters
localhost
conf/slaves
anaconda
v-desktop
the datanode, namenode, secondarynamenode seems to be working fine on the
master but on slave this is not the case
slave
OS: Ubuntu
hadoop-site.xml listing
same as master
in the logs on slave machine I see this
2008-03-05 12:15:25,705 INFO org.apache.hadoop.metrics.jvm.JvmMetrics:
Initializing JVM Metrics with processName=DataNode, sessionId=null
2008-03-05 12:15:25,920 FATAL org.apache.hadoop.dfs.DataNode: Incompatible
build versions: namenode BV = Unknown; datanode BV = 607333
2008-03-05 12:15:25,926 ERROR org.apache.hadoop.dfs.DataNode:
java.io.IOException: Incompatible build versions: namenode BV = Unknown;
datanode BV = 607333
at org.apache.hadoop.dfs.DataNode.handshake(DataNode.java:316)
at org.apache.hadoop.dfs.DataNode.startDataNode(DataNode.java:238)
at org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:206)
at org.apache.hadoop.dfs.DataNode.makeInstance(DataNode.java:1575)
at org.apache.hadoop.dfs.DataNode.run(DataNode.java:1519)
at org.apache.hadoop.dfs.DataNode.createDataNode(DataNode.java:1540)
at org.apache.hadoop.dfs.DataNode.main(DataNode.java:1711)
Can someone help me with this please.
Thanks
Ved
Re: 答复: clustering problem
Posted by Ved Prakash <me...@gmail.com>.
Hi Zhang,
Thanks for your reply, I tried this but no use. It still throws up
Incompatible build versions.
I removed the dfs local directory on slave and issued start-dfs.sh on
server, and when I checked the logs it showed up with the same problem.
Do you guys need some more information from my side to have a better
understanding about the problem.
Please let me know,
Thanks
Ved
Zhang, Guibin wrote:
>
> You can delete the DFS local dir in the slave (The local dictionary should
> be ${hadoop.tmp.dir}/dfs/) and try again.
>
>
> -----邮件原件-----
> 发件人: Ved Prakash [mailto:meramailinglist@gmail.com]
> 发送时间: 2008年3月5日 14:51
> 收件人: core-user@hadoop.apache.org
> 主题: clustering problem
>
> Hi Guys,
>
> I am having problems creating clusters on 2 machines
>
> Machine configuration :
> Master : OS: Fedora core 7
> hadoop-0.15.2
>
> hadoop-site.xml listing
>
> <configuration>
> <property>
> <name>fs.default.name</name>
> <value>anaconda:50001</value>
> </property>
> <property>
> <name>mapred.job.tracker</name>
> <value>anaconda:50002</value>
> </property>
> <property>
> <name>dfs.replication</name>
> <value>2</value>
> </property>
> <property>
> <name>dfs.secondary.info.port</name>
> <value>50003</value>
> </property>
> <property>
> <name>dfs.info.port</name>
> <value>50004</value>
> </property>
> <property>
> <name>mapred.job.tracker.info.port</name>
> <value>50005</value>
> </property>
> <property>
> <name>tasktracker.http.port</name>
> <value>50006</value>
> </property>
> </configuration>
>
> conf/masters
> localhost
>
> conf/slaves
> anaconda
> v-desktop
>
> the datanode, namenode, secondarynamenode seems to be working fine on the
> master but on slave this is not the case
>
> slave
> OS: Ubuntu
>
> hadoop-site.xml listing
>
> same as master
>
> in the logs on slave machine I see this
>
> 2008-03-05 12:15:25,705 INFO org.apache.hadoop.metrics.jvm.JvmMetrics:
> Initializing JVM Metrics with processName=DataNode, sessionId=null
> 2008-03-05 12:15:25,920 FATAL org.apache.hadoop.dfs.DataNode: Incompatible
> build versions: namenode BV = Unknown; datanode BV = 607333
> 2008-03-05 12:15:25,926 ERROR org.apache.hadoop.dfs.DataNode:
> java.io.IOException: Incompatible build versions: namenode BV = Unknown;
> datanode BV = 607333
> at org.apache.hadoop.dfs.DataNode.handshake(DataNode.java:316)
> at org.apache.hadoop.dfs.DataNode.startDataNode(DataNode.java:238)
> at org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:206)
> at org.apache.hadoop.dfs.DataNode.makeInstance(DataNode.java:1575)
> at org.apache.hadoop.dfs.DataNode.run(DataNode.java:1519)
> at
> org.apache.hadoop.dfs.DataNode.createDataNode(DataNode.java:1540)
> at org.apache.hadoop.dfs.DataNode.main(DataNode.java:1711)
>
> Can someone help me with this please.
>
> Thanks
>
> Ved
>
>
--
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Re: 答复: clustering problem
Posted by Ved Prakash <me...@gmail.com>.
Hi,
I found the solution for the problem I have posted, I would post the
resolution here so that others may benefit from this.
the incompatibility was showing on my slave was because of incompatible java
installed on my slave. I removed the current java installation from slave
and installed the same version as I have on my master and that solved the
problem.
Thanks all, for your responses.
Ved
2008/3/5 Ved Prakash <me...@gmail.com>:
> Hi Miles,
>
> Yes, I have hadoop-0.15.2 installed on both my systems.
>
> Ved
>
> 2008/3/5 Miles Osborne <mi...@inf.ed.ac.uk>:
>
> Did you use exactly the same version of Hadoop on each and every node?
> >
> > Miles
> >
> > On 05/03/2008, Ved Prakash <me...@gmail.com> wrote:
> > >
> > > Hi Zhang,
> > >
> > > Thanks for your reply, I tried this but no use. It still throws up
> > > Incompatible build versions.
> > >
> > > I removed the dfs local directory on slave and issued start-dfs.sh on
> > > server, and when I checked the logs it showed up with the same
> > problem.
> > >
> > > Do you guys need some more information from my side to have a better
> > > understanding about the problem.
> > >
> > > Please let me know,
> > >
> > > Thanks
> > >
> > > Ved
> > >
> > > 2008/3/5 Zhang, Guibin <gz...@freewheel.tv>:
> > >
> > > > You can delete the DFS local dir in the slave (The local dictionary
> > > should
> > > > be ${hadoop.tmp.dir}/dfs/) and try again.
> > > >
> > > >
> > > > -----邮件原件-----
> > > > 发件人: Ved Prakash [mailto:meramailinglist@gmail.com]
> > > > 发送时间: 2008年3月5日 14:51
> > > > 收件人: core-user@hadoop.apache.org
> > > > 主题: clustering problem
> > > >
> > > > Hi Guys,
> > > >
> > > > I am having problems creating clusters on 2 machines
> > > >
> > > > Machine configuration :
> > > > Master : OS: Fedora core 7
> > > > hadoop-0.15.2
> > > >
> > > > hadoop-site.xml listing
> > > >
> > > > <configuration>
> > > > <property>
> > > > <name>fs.default.name</name>
> > > > <value>anaconda:50001</value>
> > > > </property>
> > > > <property>
> > > > <name>mapred.job.tracker</name>
> > > > <value>anaconda:50002</value>
> > > > </property>
> > > > <property>
> > > > <name>dfs.replication</name>
> > > > <value>2</value>
> > > > </property>
> > > > <property>
> > > > <name>dfs.secondary.info.port</name>
> > > > <value>50003</value>
> > > > </property>
> > > > <property>
> > > > <name>dfs.info.port</name>
> > > > <value>50004</value>
> > > > </property>
> > > > <property>
> > > > <name>mapred.job.tracker.info.port</name>
> > > > <value>50005</value>
> > > > </property>
> > > > <property>
> > > > <name>tasktracker.http.port</name>
> > > > <value>50006</value>
> > > > </property>
> > > > </configuration>
> > > >
> > > > conf/masters
> > > > localhost
> > > >
> > > > conf/slaves
> > > > anaconda
> > > > v-desktop
> > > >
> > > > the datanode, namenode, secondarynamenode seems to be working fine
> > on
> > > the
> > > > master but on slave this is not the case
> > > >
> > > > slave
> > > > OS: Ubuntu
> > > >
> > > > hadoop-site.xml listing
> > > >
> > > > same as master
> > > >
> > > > in the logs on slave machine I see this
> > > >
> > > > 2008-03-05 12:15:25,705 INFO
> > org.apache.hadoop.metrics.jvm.JvmMetrics:
> > > > Initializing JVM Metrics with processName=DataNode, sessionId=null
> > > > 2008-03-05 12:15:25,920 FATAL org.apache.hadoop.dfs.DataNode:
> > > Incompatible
> > > > build versions: namenode BV = Unknown; datanode BV = 607333
> > > > 2008-03-05 12:15:25,926 ERROR org.apache.hadoop.dfs.DataNode:
> > > > java.io.IOException: Incompatible build versions: namenode BV =
> > Unknown;
> > > > datanode BV = 607333
> > > > at org.apache.hadoop.dfs.DataNode.handshake(DataNode.java
> > :316)
> > > > at org.apache.hadoop.dfs.DataNode.startDataNode(DataNode.java
> > > :238)
> > > > at org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:206)
> > > > at org.apache.hadoop.dfs.DataNode.makeInstance(DataNode.java
> > > :1575)
> > > > at org.apache.hadoop.dfs.DataNode.run(DataNode.java:1519)
> > > > at org.apache.hadoop.dfs.DataNode.createDataNode(
> > DataNode.java
> > > > :1540)
> > > > at org.apache.hadoop.dfs.DataNode.main(DataNode.java:1711)
> > > >
> > > > Can someone help me with this please.
> > > >
> > > > Thanks
> > > >
> > > > Ved
> > > >
> > >
> >
> >
> >
> > --
> > The University of Edinburgh is a charitable body, registered in
> > Scotland,
> > with registration number SC005336.
> >
>
>
Re: 答复: clustering problem
Posted by Ved Prakash <me...@gmail.com>.
Hi Miles,
Yes, I have hadoop-0.15.2 installed on both my systems.
Ved
2008/3/5 Miles Osborne <mi...@inf.ed.ac.uk>:
> Did you use exactly the same version of Hadoop on each and every node?
>
> Miles
>
> On 05/03/2008, Ved Prakash <me...@gmail.com> wrote:
> >
> > Hi Zhang,
> >
> > Thanks for your reply, I tried this but no use. It still throws up
> > Incompatible build versions.
> >
> > I removed the dfs local directory on slave and issued start-dfs.sh on
> > server, and when I checked the logs it showed up with the same problem.
> >
> > Do you guys need some more information from my side to have a better
> > understanding about the problem.
> >
> > Please let me know,
> >
> > Thanks
> >
> > Ved
> >
> > 2008/3/5 Zhang, Guibin <gz...@freewheel.tv>:
> >
> > > You can delete the DFS local dir in the slave (The local dictionary
> > should
> > > be ${hadoop.tmp.dir}/dfs/) and try again.
> > >
> > >
> > > -----邮件原件-----
> > > 发件人: Ved Prakash [mailto:meramailinglist@gmail.com]
> > > 发送时间: 2008年3月5日 14:51
> > > 收件人: core-user@hadoop.apache.org
> > > 主题: clustering problem
> > >
> > > Hi Guys,
> > >
> > > I am having problems creating clusters on 2 machines
> > >
> > > Machine configuration :
> > > Master : OS: Fedora core 7
> > > hadoop-0.15.2
> > >
> > > hadoop-site.xml listing
> > >
> > > <configuration>
> > > <property>
> > > <name>fs.default.name</name>
> > > <value>anaconda:50001</value>
> > > </property>
> > > <property>
> > > <name>mapred.job.tracker</name>
> > > <value>anaconda:50002</value>
> > > </property>
> > > <property>
> > > <name>dfs.replication</name>
> > > <value>2</value>
> > > </property>
> > > <property>
> > > <name>dfs.secondary.info.port</name>
> > > <value>50003</value>
> > > </property>
> > > <property>
> > > <name>dfs.info.port</name>
> > > <value>50004</value>
> > > </property>
> > > <property>
> > > <name>mapred.job.tracker.info.port</name>
> > > <value>50005</value>
> > > </property>
> > > <property>
> > > <name>tasktracker.http.port</name>
> > > <value>50006</value>
> > > </property>
> > > </configuration>
> > >
> > > conf/masters
> > > localhost
> > >
> > > conf/slaves
> > > anaconda
> > > v-desktop
> > >
> > > the datanode, namenode, secondarynamenode seems to be working fine on
> > the
> > > master but on slave this is not the case
> > >
> > > slave
> > > OS: Ubuntu
> > >
> > > hadoop-site.xml listing
> > >
> > > same as master
> > >
> > > in the logs on slave machine I see this
> > >
> > > 2008-03-05 12:15:25,705 INFO org.apache.hadoop.metrics.jvm.JvmMetrics:
> > > Initializing JVM Metrics with processName=DataNode, sessionId=null
> > > 2008-03-05 12:15:25,920 FATAL org.apache.hadoop.dfs.DataNode:
> > Incompatible
> > > build versions: namenode BV = Unknown; datanode BV = 607333
> > > 2008-03-05 12:15:25,926 ERROR org.apache.hadoop.dfs.DataNode:
> > > java.io.IOException: Incompatible build versions: namenode BV =
> Unknown;
> > > datanode BV = 607333
> > > at org.apache.hadoop.dfs.DataNode.handshake(DataNode.java:316)
> > > at org.apache.hadoop.dfs.DataNode.startDataNode(DataNode.java
> > :238)
> > > at org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:206)
> > > at org.apache.hadoop.dfs.DataNode.makeInstance(DataNode.java
> > :1575)
> > > at org.apache.hadoop.dfs.DataNode.run(DataNode.java:1519)
> > > at org.apache.hadoop.dfs.DataNode.createDataNode(DataNode.java
> > > :1540)
> > > at org.apache.hadoop.dfs.DataNode.main(DataNode.java:1711)
> > >
> > > Can someone help me with this please.
> > >
> > > Thanks
> > >
> > > Ved
> > >
> >
>
>
>
> --
> The University of Edinburgh is a charitable body, registered in Scotland,
> with registration number SC005336.
>
Re: 答复: clustering problem
Posted by Miles Osborne <mi...@inf.ed.ac.uk>.
Did you use exactly the same version of Hadoop on each and every node?
Miles
On 05/03/2008, Ved Prakash <me...@gmail.com> wrote:
>
> Hi Zhang,
>
> Thanks for your reply, I tried this but no use. It still throws up
> Incompatible build versions.
>
> I removed the dfs local directory on slave and issued start-dfs.sh on
> server, and when I checked the logs it showed up with the same problem.
>
> Do you guys need some more information from my side to have a better
> understanding about the problem.
>
> Please let me know,
>
> Thanks
>
> Ved
>
> 2008/3/5 Zhang, Guibin <gz...@freewheel.tv>:
>
> > You can delete the DFS local dir in the slave (The local dictionary
> should
> > be ${hadoop.tmp.dir}/dfs/) and try again.
> >
> >
> > -----邮件原件-----
> > 发件人: Ved Prakash [mailto:meramailinglist@gmail.com]
> > 发送时间: 2008年3月5日 14:51
> > 收件人: core-user@hadoop.apache.org
> > 主题: clustering problem
> >
> > Hi Guys,
> >
> > I am having problems creating clusters on 2 machines
> >
> > Machine configuration :
> > Master : OS: Fedora core 7
> > hadoop-0.15.2
> >
> > hadoop-site.xml listing
> >
> > <configuration>
> > <property>
> > <name>fs.default.name</name>
> > <value>anaconda:50001</value>
> > </property>
> > <property>
> > <name>mapred.job.tracker</name>
> > <value>anaconda:50002</value>
> > </property>
> > <property>
> > <name>dfs.replication</name>
> > <value>2</value>
> > </property>
> > <property>
> > <name>dfs.secondary.info.port</name>
> > <value>50003</value>
> > </property>
> > <property>
> > <name>dfs.info.port</name>
> > <value>50004</value>
> > </property>
> > <property>
> > <name>mapred.job.tracker.info.port</name>
> > <value>50005</value>
> > </property>
> > <property>
> > <name>tasktracker.http.port</name>
> > <value>50006</value>
> > </property>
> > </configuration>
> >
> > conf/masters
> > localhost
> >
> > conf/slaves
> > anaconda
> > v-desktop
> >
> > the datanode, namenode, secondarynamenode seems to be working fine on
> the
> > master but on slave this is not the case
> >
> > slave
> > OS: Ubuntu
> >
> > hadoop-site.xml listing
> >
> > same as master
> >
> > in the logs on slave machine I see this
> >
> > 2008-03-05 12:15:25,705 INFO org.apache.hadoop.metrics.jvm.JvmMetrics:
> > Initializing JVM Metrics with processName=DataNode, sessionId=null
> > 2008-03-05 12:15:25,920 FATAL org.apache.hadoop.dfs.DataNode:
> Incompatible
> > build versions: namenode BV = Unknown; datanode BV = 607333
> > 2008-03-05 12:15:25,926 ERROR org.apache.hadoop.dfs.DataNode:
> > java.io.IOException: Incompatible build versions: namenode BV = Unknown;
> > datanode BV = 607333
> > at org.apache.hadoop.dfs.DataNode.handshake(DataNode.java:316)
> > at org.apache.hadoop.dfs.DataNode.startDataNode(DataNode.java
> :238)
> > at org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:206)
> > at org.apache.hadoop.dfs.DataNode.makeInstance(DataNode.java
> :1575)
> > at org.apache.hadoop.dfs.DataNode.run(DataNode.java:1519)
> > at org.apache.hadoop.dfs.DataNode.createDataNode(DataNode.java
> > :1540)
> > at org.apache.hadoop.dfs.DataNode.main(DataNode.java:1711)
> >
> > Can someone help me with this please.
> >
> > Thanks
> >
> > Ved
> >
>
--
The University of Edinburgh is a charitable body, registered in Scotland,
with registration number SC005336.
Re: 答复: clustering problem
Posted by Ved Prakash <me...@gmail.com>.
Hi Zhang,
Thanks for your reply, I tried this but no use. It still throws up
Incompatible build versions.
I removed the dfs local directory on slave and issued start-dfs.sh on
server, and when I checked the logs it showed up with the same problem.
Do you guys need some more information from my side to have a better
understanding about the problem.
Please let me know,
Thanks
Ved
2008/3/5 Zhang, Guibin <gz...@freewheel.tv>:
> You can delete the DFS local dir in the slave (The local dictionary should
> be ${hadoop.tmp.dir}/dfs/) and try again.
>
>
> -----邮件原件-----
> 发件人: Ved Prakash [mailto:meramailinglist@gmail.com]
> 发送时间: 2008年3月5日 14:51
> 收件人: core-user@hadoop.apache.org
> 主题: clustering problem
>
> Hi Guys,
>
> I am having problems creating clusters on 2 machines
>
> Machine configuration :
> Master : OS: Fedora core 7
> hadoop-0.15.2
>
> hadoop-site.xml listing
>
> <configuration>
> <property>
> <name>fs.default.name</name>
> <value>anaconda:50001</value>
> </property>
> <property>
> <name>mapred.job.tracker</name>
> <value>anaconda:50002</value>
> </property>
> <property>
> <name>dfs.replication</name>
> <value>2</value>
> </property>
> <property>
> <name>dfs.secondary.info.port</name>
> <value>50003</value>
> </property>
> <property>
> <name>dfs.info.port</name>
> <value>50004</value>
> </property>
> <property>
> <name>mapred.job.tracker.info.port</name>
> <value>50005</value>
> </property>
> <property>
> <name>tasktracker.http.port</name>
> <value>50006</value>
> </property>
> </configuration>
>
> conf/masters
> localhost
>
> conf/slaves
> anaconda
> v-desktop
>
> the datanode, namenode, secondarynamenode seems to be working fine on the
> master but on slave this is not the case
>
> slave
> OS: Ubuntu
>
> hadoop-site.xml listing
>
> same as master
>
> in the logs on slave machine I see this
>
> 2008-03-05 12:15:25,705 INFO org.apache.hadoop.metrics.jvm.JvmMetrics:
> Initializing JVM Metrics with processName=DataNode, sessionId=null
> 2008-03-05 12:15:25,920 FATAL org.apache.hadoop.dfs.DataNode: Incompatible
> build versions: namenode BV = Unknown; datanode BV = 607333
> 2008-03-05 12:15:25,926 ERROR org.apache.hadoop.dfs.DataNode:
> java.io.IOException: Incompatible build versions: namenode BV = Unknown;
> datanode BV = 607333
> at org.apache.hadoop.dfs.DataNode.handshake(DataNode.java:316)
> at org.apache.hadoop.dfs.DataNode.startDataNode(DataNode.java:238)
> at org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:206)
> at org.apache.hadoop.dfs.DataNode.makeInstance(DataNode.java:1575)
> at org.apache.hadoop.dfs.DataNode.run(DataNode.java:1519)
> at org.apache.hadoop.dfs.DataNode.createDataNode(DataNode.java
> :1540)
> at org.apache.hadoop.dfs.DataNode.main(DataNode.java:1711)
>
> Can someone help me with this please.
>
> Thanks
>
> Ved
>
答复: clustering problem
Posted by "Zhang, Guibin" <gz...@freewheel.tv>.
You can delete the DFS local dir in the slave (The local dictionary should be ${hadoop.tmp.dir}/dfs/) and try again.
-----邮件原件-----
发件人: Ved Prakash [mailto:meramailinglist@gmail.com]
发送时间: 2008年3月5日 14:51
收件人: core-user@hadoop.apache.org
主题: clustering problem
Hi Guys,
I am having problems creating clusters on 2 machines
Machine configuration :
Master : OS: Fedora core 7
hadoop-0.15.2
hadoop-site.xml listing
<configuration>
<property>
<name>fs.default.name</name>
<value>anaconda:50001</value>
</property>
<property>
<name>mapred.job.tracker</name>
<value>anaconda:50002</value>
</property>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
<property>
<name>dfs.secondary.info.port</name>
<value>50003</value>
</property>
<property>
<name>dfs.info.port</name>
<value>50004</value>
</property>
<property>
<name>mapred.job.tracker.info.port</name>
<value>50005</value>
</property>
<property>
<name>tasktracker.http.port</name>
<value>50006</value>
</property>
</configuration>
conf/masters
localhost
conf/slaves
anaconda
v-desktop
the datanode, namenode, secondarynamenode seems to be working fine on the
master but on slave this is not the case
slave
OS: Ubuntu
hadoop-site.xml listing
same as master
in the logs on slave machine I see this
2008-03-05 12:15:25,705 INFO org.apache.hadoop.metrics.jvm.JvmMetrics:
Initializing JVM Metrics with processName=DataNode, sessionId=null
2008-03-05 12:15:25,920 FATAL org.apache.hadoop.dfs.DataNode: Incompatible
build versions: namenode BV = Unknown; datanode BV = 607333
2008-03-05 12:15:25,926 ERROR org.apache.hadoop.dfs.DataNode:
java.io.IOException: Incompatible build versions: namenode BV = Unknown;
datanode BV = 607333
at org.apache.hadoop.dfs.DataNode.handshake(DataNode.java:316)
at org.apache.hadoop.dfs.DataNode.startDataNode(DataNode.java:238)
at org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:206)
at org.apache.hadoop.dfs.DataNode.makeInstance(DataNode.java:1575)
at org.apache.hadoop.dfs.DataNode.run(DataNode.java:1519)
at org.apache.hadoop.dfs.DataNode.createDataNode(DataNode.java:1540)
at org.apache.hadoop.dfs.DataNode.main(DataNode.java:1711)
Can someone help me with this please.
Thanks
Ved