在Ubuntu上使用Hadoop平台和Mapreduce框架出现的问题

[choudhero]

通过ssh构建一个集群，出现客户端连接不上的情况，显示ipc.client:retrying to connect server
平时连接啊，传输文件啊，都没问题， 运行程序时，不停地retry
运行程序时机器间连接不上
有哪位大侠知道

[luffyke]

服务开了没有，是什么集群
帮顶！！

[sotom]

Are you just trying to get this running for the first time?

To format a new distributed filesystem you can use:
$ bin/hadoop namenode -format

As it says in the docs:
*You need to do this the first time you set up a Hadoop installation.
Do notformat a running Hadoop filesystem, this will cause all your
data to be
erased. Before formatting, ensure that the dfs.name.dir directory exists. If
you just used the default, then mkdir -p /tmp/hadoop-username/dfs/name will
create the directory. To format the filesystem (which simply initializes the
directory specified by the dfs.name.dir variable).** *

On Thu, May 15, 2008 at 2:19 AM, shimon golan <[e-mail]> wrote:

> Thanks ,
>
> I did that but it didn't work ( I got the same message )
>
> my updated /etc/hosts file is
>
> 127.0.0.1 localhost mem
> 192.168.5.236 localhost mem
>
> I've also tried this :
>
> 192.168.5.236 localhost mem
> 127.0.0.1 localhost mem
>
> which gave the message
> Retrying connect to server: localhost/192.168.5.236:50000
>
>
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> On Wed, May 14, 2008 at 7:27 PM, Akshar <[e-mail]> wrote:
>
> > I suggest mapping localhost to actual IP in my /etc/hosts file and
> > running it again.
> >
> > Akshar
> >
> >
> >
> > On Wed, May 14, 2008 at 9:13 AM, Shimon <[e-mail]> wrote:
> >
> > > Hi all,
> > >
> > > I've set up a standalone hadoop server , and when I run
> > > bin/hadoop dfs namenode -format
> > >
> > > I get the following message ( repeating 10 times ) :
> > >
> > > ipc.Client: Retrying connect to server: localhost/127.0.0.1:50000
> > >
> > >
> > >
> > >
> > > My hadoop-site.xml file is as follows :
> > >
> > > <?xml version="1.0"?>
> > > <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
> > >
> > >
> > >
> > > <configuration>
> > >
> > > <property>
> > > <name>fs.default.name</name>
> > > <value>localhost:50000</value>
> > > </property>
> > >
> > > <property>
> > > <name>mapred.job.tracker</name>
> > > <value>localhost:50001</value>
> > > </property>
> > >
> > >
> > > <property>
> > > <name>hadoop.tmp.dir</name>
> > > <value>/tmp/hadoop_storage</value>
> > > </property>
> > >
> > > <property>
> > > <name>dfs.replication</name>
> > > <value>1</value>
> > > </property>
> > >
> > >
> > > <property>
> > > <name>mapred.map.tasks.speculative.execution</name>
> > > <value>false</value>
> > > </property>
> > >
> > > <property>
> > > <name>mapred.reduce.tasks.speculative.execution</name>
> > > <value>false</value>
> > > </property>
> > >
> > > </configuration>
> > >
> > >
> > > Any happen would be appreciated.
> > >
> > > Thanks a lot ,
> > > Shimon
> > >
> >
>

[sotom]

说实话我也看不懂上边说的是什么。看能不能给你带来点什么思路。

[choudhero]

谢谢大家 我好好看看

[earhole_xiuxiu]

支持

[sleepydog]

你只启动了HDFS没有启动mapreduce吧

[niulei257]

支持，我好好看看

[lvp1984]

jobtracker都启动了吗？

[gloomyfish]

估计是配置的问题

[lvgeneral]

bcuo,中国知人好好努力。

[stoneallen]

配置问题吧，多尝试下

[aperson111]

我也出现这个问题了，除了namenode外，别的机器上的datanode起不来，都提示ipc.client:retrying to connect server这个错误，谁解决了不？帮忙告诉一下啊！

[wangshisen66]

你应该关闭namenode和slave机器的防火墙。或者就是配置文件的地址没弄好，是不是填写的IP地址？如果是，请改为主机名称，另外，需要将slave机器的主机地址加到namenode的host中，如果是windows，请在namenode中使用ssh salve的名称，这样就会提示是否加入host，输入yes即可。。

[涛侠]

ssh无密码访问没设置？

[t150ckh]

[Quote=引用 3 楼 sotom 的回复:]

说实话我也看不懂上边说的是什么。看能不能给你带来点什么思路。
[/Quote]

我也是，求高手。

[孤鸿掠影]

[Quote=引用 2 楼 sotom 的回复:]
Are you just trying to get this running for the first time?

To format a new distributed filesystem you can use:
$ bin/hadoop namenode -format

As it says in the docs:
*You need to do this the f……
[/Quote]

二楼很给力，学习一下。

[yangyi10]

ssh密钥登陆是否已配置
每台机器上jps一下 看看是否 namenode datanode jobtracker tasktracker都启动
查看启动日志

[RiverM]

三楼实际上没有说什么有价值的信息 人家配置的是standalone模式的 而且别人的给的回复是问他格式化hdfs没有