Did you use exactly the same version of Hadoop on each and every node?
Miles
On 05/03/2008, Ved Prakash <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]>:
>
> > 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:[EMAIL PROTECTED]
> > 发送时间: 2008年3月5日 14:51
> > 收件人: [email protected]
> > 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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