Re: Re: [help]how to stop HDFS
Try $HADOOP_PREFIX_HOME/bin/hdfs namenode stop --config $HADOOP_CONF_DIR and $HADOOP_PREFIX_HOME/bin/hdfs datanode stop --config $HADOOP_CONF_DIR. It would stop namenode and datanode separately. The HADOOP_CONF_DIR is the directory where you store your configuration files. Hailong *** * Hailong Yang, PhD. Candidate * Sino-German Joint Software Institute, * School of Computer Science&Engineering, Beihang University * Phone: (86-010)82315908 * Email: hailong.yang1...@gmail.com * Address: G413, New Main Building in Beihang University, * No.37 XueYuan Road,HaiDian District, * Beijing,P.R.China,100191 *** From: cat fa Date: 2011-11-29 20:22 To: common-user Subject: Re: [help]how to stop HDFS use $HADOOP_CONF or $HADOOP_CONF_DIR ? I'm using hadoop 0.23. you mean which class? the class of hadoop or of java? 2011/11/29 Prashant Sharma > Try making $HADOOP_CONF point to right classpath including your > configuration folder. > > > On Tue, Nov 29, 2011 at 3:58 PM, cat fa > wrote: > > > I used the command : > > > > $HADOOP_PREFIX_HOME/bin/hdfs start namenode --config $HADOOP_CONF_DIR > > > > to sart HDFS. > > > > This command is in Hadoop document (here > > < > > > http://hadoop.apache.org/common/docs/r0.23.0/hadoop-yarn/hadoop-yarn-site/ClusterSetup.html > > >) > > > > However, I got errors as > > > > Exception in thread "main" java.lang.NoClassDefFoundError:start > > > > Could anyone tell me how to start and stop HDFS? > > > > By the way, how to set Gmail so that it doesn't top post my reply? > > >
Re: Re: [help]how to stop HDFS
it didn't work. It gave me the Usage information. 2011/11/29 hailong.yang1115 > Try $HADOOP_PREFIX_HOME/bin/hdfs namenode stop --config $HADOOP_CONF_DIR > and $HADOOP_PREFIX_HOME/bin/hdfs datanode stop --config $HADOOP_CONF_DIR. > It would stop namenode and datanode separately. > The HADOOP_CONF_DIR is the directory where you store your configuration > files. > Hailong > > > > > *** > * Hailong Yang, PhD. Candidate > * Sino-German Joint Software Institute, > * School of Computer Science&Engineering, Beihang University > * Phone: (86-010)82315908 > * Email: hailong.yang1...@gmail.com > * Address: G413, New Main Building in Beihang University, > * No.37 XueYuan Road,HaiDian District, > * Beijing,P.R.China,100191 > *** > > From: cat fa > Date: 2011-11-29 20:22 > To: common-user > Subject: Re: [help]how to stop HDFS > use $HADOOP_CONF or $HADOOP_CONF_DIR ? I'm using hadoop 0.23. > > you mean which class? the class of hadoop or of java? > > 2011/11/29 Prashant Sharma > > > Try making $HADOOP_CONF point to right classpath including your > > configuration folder. > > > > > > On Tue, Nov 29, 2011 at 3:58 PM, cat fa > > wrote: > > > > > I used the command : > > > > > > $HADOOP_PREFIX_HOME/bin/hdfs start namenode --config $HADOOP_CONF_DIR > > > > > > to sart HDFS. > > > > > > This command is in Hadoop document (here > > > < > > > > > > http://hadoop.apache.org/common/docs/r0.23.0/hadoop-yarn/hadoop-yarn-site/ClusterSetup.html > > > >) > > > > > > However, I got errors as > > > > > > Exception in thread "main" java.lang.NoClassDefFoundError:start > > > > > > Could anyone tell me how to start and stop HDFS? > > > > > > By the way, how to set Gmail so that it doesn't top post my reply? > > > > > >
Re: Re: [help]how to stop HDFS
I mean, you have to export the variables export HADOOP_CONF_DIR=/path/to/your/configdirectory. also export HADOOP_HDFS_HOME ,HADOOP_COMMON_HOME. before your run your command. I suppose this should fix the problem. -P On Tue, Nov 29, 2011 at 6:23 PM, cat fa wrote: > it didn't work. It gave me the Usage information. > > 2011/11/29 hailong.yang1115 > > > Try $HADOOP_PREFIX_HOME/bin/hdfs namenode stop --config $HADOOP_CONF_DIR > > and $HADOOP_PREFIX_HOME/bin/hdfs datanode stop --config $HADOOP_CONF_DIR. > > It would stop namenode and datanode separately. > > The HADOOP_CONF_DIR is the directory where you store your configuration > > files. > > Hailong > > > > > > > > > > *** > > * Hailong Yang, PhD. Candidate > > * Sino-German Joint Software Institute, > > * School of Computer Science&Engineering, Beihang University > > * Phone: (86-010)82315908 > > * Email: hailong.yang1...@gmail.com > > * Address: G413, New Main Building in Beihang University, > > * No.37 XueYuan Road,HaiDian District, > > * Beijing,P.R.China,100191 > > *** > > > > From: cat fa > > Date: 2011-11-29 20:22 > > To: common-user > > Subject: Re: [help]how to stop HDFS > > use $HADOOP_CONF or $HADOOP_CONF_DIR ? I'm using hadoop 0.23. > > > > you mean which class? the class of hadoop or of java? > > > > 2011/11/29 Prashant Sharma > > > > > Try making $HADOOP_CONF point to right classpath including your > > > configuration folder. > > > > > > > > > On Tue, Nov 29, 2011 at 3:58 PM, cat fa > > > wrote: > > > > > > > I used the command : > > > > > > > > $HADOOP_PREFIX_HOME/bin/hdfs start namenode --config $HADOOP_CONF_DIR > > > > > > > > to sart HDFS. > > > > > > > > This command is in Hadoop document (here > > > > < > > > > > > > > > > http://hadoop.apache.org/common/docs/r0.23.0/hadoop-yarn/hadoop-yarn-site/ClusterSetup.html > > > > >) > > > > > > > > However, I got errors as > > > > > > > > Exception in thread "main" java.lang.NoClassDefFoundError:start > > > > > > > > Could anyone tell me how to start and stop HDFS? > > > > > > > > By the way, how to set Gmail so that it doesn't top post my reply? > > > > > > > > > >
Re: Re: [help]how to stop HDFS
Thank you for your help, but I'm still a little confused. Suppose I installed hadoop in /usr/bin/hadoop/ .Should I point HADOOP_COMMON_HOME to /usr/bin/hadoop ? Where should I point HADOOP_HDFS_HOME? Also to /usr/bin/hadoop/ ? 2011/11/30 Prashant Sharma > I mean, you have to export the variables > > export HADOOP_CONF_DIR=/path/to/your/configdirectory. > > also export HADOOP_HDFS_HOME ,HADOOP_COMMON_HOME. before your run your > command. I suppose this should fix the problem. > -P > > On Tue, Nov 29, 2011 at 6:23 PM, cat fa > wrote: > > > it didn't work. It gave me the Usage information. > > > > 2011/11/29 hailong.yang1115 > > > > > Try $HADOOP_PREFIX_HOME/bin/hdfs namenode stop --config > $HADOOP_CONF_DIR > > > and $HADOOP_PREFIX_HOME/bin/hdfs datanode stop --config > $HADOOP_CONF_DIR. > > > It would stop namenode and datanode separately. > > > The HADOOP_CONF_DIR is the directory where you store your configuration > > > files. > > > Hailong > > > > > > > > > > > > > > > *** > > > * Hailong Yang, PhD. Candidate > > > * Sino-German Joint Software Institute, > > > * School of Computer Science&Engineering, Beihang University > > > * Phone: (86-010)82315908 > > > * Email: hailong.yang1...@gmail.com > > > * Address: G413, New Main Building in Beihang University, > > > * No.37 XueYuan Road,HaiDian District, > > > * Beijing,P.R.China,100191 > > > *** > > > > > > From: cat fa > > > Date: 2011-11-29 20:22 > > > To: common-user > > > Subject: Re: [help]how to stop HDFS > > > use $HADOOP_CONF or $HADOOP_CONF_DIR ? I'm using hadoop 0.23. > > > > > > you mean which class? the class of hadoop or of java? > > > > > > 2011/11/29 Prashant Sharma > > > > > > > Try making $HADOOP_CONF point to right classpath including your > > > > configuration folder. > > > > > > > > > > > > On Tue, Nov 29, 2011 at 3:58 PM, cat fa > > > > > wrote: > > > > > > > > > I used the command : > > > > > > > > > > $HADOOP_PREFIX_HOME/bin/hdfs start namenode --config > $HADOOP_CONF_DIR > > > > > > > > > > to sart HDFS. > > > > > > > > > > This command is in Hadoop document (here > > > > > < > > > > > > > > > > > > > > > http://hadoop.apache.org/common/docs/r0.23.0/hadoop-yarn/hadoop-yarn-site/ClusterSetup.html > > > > > >) > > > > > > > > > > However, I got errors as > > > > > > > > > > Exception in thread "main" java.lang.NoClassDefFoundError:start > > > > > > > > > > Could anyone tell me how to start and stop HDFS? > > > > > > > > > > By the way, how to set Gmail so that it doesn't top post my reply? > > > > > > > > > > > > > > >
Re: Re: [help]how to stop HDFS
I am sorry, I had no idea you have done a rpm install, my suggestion was based on the assumption that you have done a tar extract install where all three distribution have to extracted and then export variables. Also I have no experience with rpm based installs - so no comments about what went wrong in your case. Basically from the error i can say that it is not able to find the jars needed on classpath which is referred by scripts through HADOOP_COMMON_HOME. I would say check with the access permission as in which user was it installed with and which user is it running with ? On Tue, Nov 29, 2011 at 10:48 PM, cat fa wrote: > Thank you for your help, but I'm still a little confused. > Suppose I installed hadoop in /usr/bin/hadoop/ .Should I > point HADOOP_COMMON_HOME to /usr/bin/hadoop ? Where should I > point HADOOP_HDFS_HOME? Also to /usr/bin/hadoop/ ? > > 2011/11/30 Prashant Sharma > > > I mean, you have to export the variables > > > > export HADOOP_CONF_DIR=/path/to/your/configdirectory. > > > > also export HADOOP_HDFS_HOME ,HADOOP_COMMON_HOME. before your run your > > command. I suppose this should fix the problem. > > -P > > > > On Tue, Nov 29, 2011 at 6:23 PM, cat fa > > wrote: > > > > > it didn't work. It gave me the Usage information. > > > > > > 2011/11/29 hailong.yang1115 > > > > > > > Try $HADOOP_PREFIX_HOME/bin/hdfs namenode stop --config > > $HADOOP_CONF_DIR > > > > and $HADOOP_PREFIX_HOME/bin/hdfs datanode stop --config > > $HADOOP_CONF_DIR. > > > > It would stop namenode and datanode separately. > > > > The HADOOP_CONF_DIR is the directory where you store your > configuration > > > > files. > > > > Hailong > > > > > > > > > > > > > > > > > > > > *** > > > > * Hailong Yang, PhD. Candidate > > > > * Sino-German Joint Software Institute, > > > > * School of Computer Science&Engineering, Beihang University > > > > * Phone: (86-010)82315908 > > > > * Email: hailong.yang1...@gmail.com > > > > * Address: G413, New Main Building in Beihang University, > > > > * No.37 XueYuan Road,HaiDian District, > > > > * Beijing,P.R.China,100191 > > > > *** > > > > > > > > From: cat fa > > > > Date: 2011-11-29 20:22 > > > > To: common-user > > > > Subject: Re: [help]how to stop HDFS > > > > use $HADOOP_CONF or $HADOOP_CONF_DIR ? I'm using hadoop 0.23. > > > > > > > > you mean which class? the class of hadoop or of java? > > > > > > > > 2011/11/29 Prashant Sharma > > > > > > > > > Try making $HADOOP_CONF point to right classpath including your > > > > > configuration folder. > > > > > > > > > > > > > > > On Tue, Nov 29, 2011 at 3:58 PM, cat fa < > boost.subscrib...@gmail.com > > > > > > > > wrote: > > > > > > > > > > > I used the command : > > > > > > > > > > > > $HADOOP_PREFIX_HOME/bin/hdfs start namenode --config > > $HADOOP_CONF_DIR > > > > > > > > > > > > to sart HDFS. > > > > > > > > > > > > This command is in Hadoop document (here > > > > > > < > > > > > > > > > > > > > > > > > > > > > http://hadoop.apache.org/common/docs/r0.23.0/hadoop-yarn/hadoop-yarn-site/ClusterSetup.html > > > > > > >) > > > > > > > > > > > > However, I got errors as > > > > > > > > > > > > Exception in thread "main" java.lang.NoClassDefFoundError:start > > > > > > > > > > > > Could anyone tell me how to start and stop HDFS? > > > > > > > > > > > > By the way, how to set Gmail so that it doesn't top post my > reply? > > > > > > > > > > > > > > > > > > > > >
Re: Re: [help]how to stop HDFS
In fact it's me to say sorry. I used the word "install" which was misleading. In fact I downloaded a tar file and extracted it to ／usr／bin／hadoop Could you please tell me where to point those variables？ 2011/11/30, Prashant Sharma : > I am sorry, I had no idea you have done a rpm install, my suggestion was > based on the assumption that you have done a tar extract install where all > three distribution have to extracted and then export variables. > Also I have no experience with rpm based installs - so no comments about > what went wrong in your case. > > Basically from the error i can say that it is not able to find the jars > needed on classpath which is referred by scripts through > HADOOP_COMMON_HOME. I would say check with the access permission as in > which user was it installed with and which user is it running with ? > > On Tue, Nov 29, 2011 at 10:48 PM, cat fa wrote: > >> Thank you for your help, but I'm still a little confused. >> Suppose I installed hadoop in /usr/bin/hadoop/ .Should I >> point HADOOP_COMMON_HOME to /usr/bin/hadoop ? Where should I >> point HADOOP_HDFS_HOME? Also to /usr/bin/hadoop/ ? >> >> 2011/11/30 Prashant Sharma >> >> > I mean, you have to export the variables >> > >> > export HADOOP_CONF_DIR=/path/to/your/configdirectory. >> > >> > also export HADOOP_HDFS_HOME ,HADOOP_COMMON_HOME. before your run your >> > command. I suppose this should fix the problem. >> > -P >> > >> > On Tue, Nov 29, 2011 at 6:23 PM, cat fa >> > wrote: >> > >> > > it didn't work. It gave me the Usage information. >> > > >> > > 2011/11/29 hailong.yang1115 >> > > >> > > > Try $HADOOP_PREFIX_HOME/bin/hdfs namenode stop --config >> > $HADOOP_CONF_DIR >> > > > and $HADOOP_PREFIX_HOME/bin/hdfs datanode stop --config >> > $HADOOP_CONF_DIR. >> > > > It would stop namenode and datanode separately. >> > > > The HADOOP_CONF_DIR is the directory where you store your >> configuration >> > > > files. >> > > > Hailong >> > > > >> > > > >> > > > >> > > > >> > > > *** >> > > > * Hailong Yang, PhD. Candidate >> > > > * Sino-German Joint Software Institute, >> > > > * School of Computer Science&Engineering, Beihang University >> > > > * Phone: (86-010)82315908 >> > > > * Email: hailong.yang1...@gmail.com >> > > > * Address: G413, New Main Building in Beihang University, >> > > > * No.37 XueYuan Road,HaiDian District, >> > > > * Beijing,P.R.China,100191 >> > > > *** >> > > > >> > > > From: cat fa >> > > > Date: 2011-11-29 20:22 >> > > > To: common-user >> > > > Subject: Re: [help]how to stop HDFS >> > > > use $HADOOP_CONF or $HADOOP_CONF_DIR ? I'm using hadoop 0.23. >> > > > >> > > > you mean which class? the class of hadoop or of java? >> > > > >> > > > 2011/11/29 Prashant Sharma >> > > > >> > > > > Try making $HADOOP_CONF point to right classpath including your >> > > > > configuration folder. >> > > > > >> > > > > >> > > > > On Tue, Nov 29, 2011 at 3:58 PM, cat fa < >> boost.subscrib...@gmail.com >> > > >> > > > > wrote: >> > > > > >> > > > > > I used the command : >> > > > > > >> > > > > > $HADOOP_PREFIX_HOME/bin/hdfs start namenode --config >> > $HADOOP_CONF_DIR >> > > > > > >> > > > > > to sart HDFS. >> > > > > > >> > > > > > This command is in Hadoop document (here >> > > > > > < >> > > > > > >> > > > > >> > > > >> > > >> > >> http://hadoop.apache.org/common/docs/r0.23.0/hadoop-yarn/hadoop-yarn-site/ClusterSetup.html >> > > > > > >) >> > > > > > >> > > > > > However, I got errors as >> > > > > > >> > > > > > Exception in thread "main" java.lang.NoClassDefFoundError:start >> > > > > > >> > > > > > Could anyone tell me how to start and stop HDFS? >> > > > > > >> > > > > > By the way, how to set Gmail so that it doesn't top post my >> reply? >> > > > > > >> > > > > >> > > > >> > > >> > >> >
Re: Re: [help]how to stop HDFS
Hi, Even i am facing the same problem. There may be some issue with script . The doc says to start namenode type : bin/hdfs namenode start But "start" is not recognized. There is a hack to start namenode with command "bin/hdfs namenode &" , but no idea how to stop. If it had been a issue with config , the later also should not have worked. Thanks, Nitin 2011/11/30 cat fa > In fact it's me to say sorry. I used the word "install" which was > misleading. > > In fact I downloaded a tar file and extracted it to ／usr／bin／hadoop > > Could you please tell me where to point those variables？ > > 2011/11/30, Prashant Sharma : > > I am sorry, I had no idea you have done a rpm install, my suggestion was > > based on the assumption that you have done a tar extract install where > all > > three distribution have to extracted and then export variables. > > Also I have no experience with rpm based installs - so no comments about > > what went wrong in your case. > > > > Basically from the error i can say that it is not able to find the jars > > needed on classpath which is referred by scripts through > > HADOOP_COMMON_HOME. I would say check with the access permission as in > > which user was it installed with and which user is it running with ? > > > > On Tue, Nov 29, 2011 at 10:48 PM, cat fa >wrote: > > > >> Thank you for your help, but I'm still a little confused. > >> Suppose I installed hadoop in /usr/bin/hadoop/ .Should I > >> point HADOOP_COMMON_HOME to /usr/bin/hadoop ? Where should I > >> point HADOOP_HDFS_HOME? Also to /usr/bin/hadoop/ ? > >> > >> 2011/11/30 Prashant Sharma > >> > >> > I mean, you have to export the variables > >> > > >> > export HADOOP_CONF_DIR=/path/to/your/configdirectory. > >> > > >> > also export HADOOP_HDFS_HOME ,HADOOP_COMMON_HOME. before your run your > >> > command. I suppose this should fix the problem. > >> > -P > >> > > >> > On Tue, Nov 29, 2011 at 6:23 PM, cat fa > >> > wrote: > >> > > >> > > it didn't work. It gave me the Usage information. > >> > > > >> > > 2011/11/29 hailong.yang1115 > >> > > > >> > > > Try $HADOOP_PREFIX_HOME/bin/hdfs namenode stop --config > >> > $HADOOP_CONF_DIR > >> > > > and $HADOOP_PREFIX_HOME/bin/hdfs datanode stop --config > >> > $HADOOP_CONF_DIR. > >> > > > It would stop namenode and datanode separately. > >> > > > The HADOOP_CONF_DIR is the directory where you store your > >> configuration > >> > > > files. > >> > > > Hailong > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > *** > >> > > > * Hailong Yang, PhD. Candidate > >> > > > * Sino-German Joint Software Institute, > >> > > > * School of Computer Science&Engineering, Beihang University > >> > > > * Phone: (86-010)82315908 > >> > > > * Email: hailong.yang1...@gmail.com > >> > > > * Address: G413, New Main Building in Beihang University, > >> > > > * No.37 XueYuan Road,HaiDian District, > >> > > > * Beijing,P.R.China,100191 > >> > > > *** > >> > > > > >> > > > From: cat fa > >> > > > Date: 2011-11-29 20:22 > >> > > > To: common-user > >> > > > Subject: Re: [help]how to stop HDFS > >> > > > use $HADOOP_CONF or $HADOOP_CONF_DIR ? I'm using hadoop 0.23. > >> > > > > >> > > > you mean which class? the class of hadoop or of java? > >> > > > > >> > > > 2011/11/29 Prashant Sharma > >> > > > > >> > > > > Try making $HADOOP_CONF point to right classpath including your > >> > > > > configuration folder. > >> > > > > > >> > > > > > >> > > > > On Tue, Nov 29, 2011 at 3:58 PM, cat fa < > >> boost.subscrib...@gmail.com > >> > > > >> > > > > wrote: > >> > > > > > >> > > > > > I used the command : > >> > > > > > > >> > > > > > $HADOOP_PREFIX_HOME/bin/hdfs start namenode --config > >> > $HADOOP_CONF_DIR > >> > > > > > > >> > > > > > to sart HDFS. > >> > > > > > > >> > > > > > This command is in Hadoop document (here > >> > > > > > < > >> > > > > > > >> > > > > > >> > > > > >> > > > >> > > >> > http://hadoop.apache.org/common/docs/r0.23.0/hadoop-yarn/hadoop-yarn-site/ClusterSetup.html > >> > > > > > >) > >> > > > > > > >> > > > > > However, I got errors as > >> > > > > > > >> > > > > > Exception in thread "main" > java.lang.NoClassDefFoundError:start > >> > > > > > > >> > > > > > Could anyone tell me how to start and stop HDFS? > >> > > > > > > >> > > > > > By the way, how to set Gmail so that it doesn't top post my > >> reply? > >> > > > > > > >> > > > > > >> > > > > >> > > > >> > > >> > > > -- Nitin Khandelwal
Re: Re: [help]how to stop HDFS
I simply use the /sbin/hadoop-daemon.sh {start|stop} {service} script
to control daemons at my end.
Does this not work for you? Or perhaps this thread is more about
documenting that?
2011/11/30 Nitin Khandelwal :
> Hi,
>
> Even i am facing the same problem. There may be some issue with script .
> The doc says to start namenode type :
> bin/hdfs namenode start
>
> But "start" is not recognized. There is a hack to start namenode with
> command "bin/hdfs namenode &" , but no idea how to stop.
> If it had been a issue with config , the later also should not have worked.
>
> Thanks,
> Nitin
>
>
> 2011/11/30 cat fa
>
>> In fact it's me to say sorry. I used the word "install" which was
>> misleading.
>>
>> In fact I downloaded a tar file and extracted it to ／usr／bin／hadoop
>>
>> Could you please tell me where to point those variables？
>>
>> 2011/11/30, Prashant Sharma :
>> > I am sorry, I had no idea you have done a rpm install, my suggestion was
>> > based on the assumption that you have done a tar extract install where
>> all
>> > three distribution have to extracted and then export variables.
>> > Also I have no experience with rpm based installs - so no comments about
>> > what went wrong in your case.
>> >
>> > Basically from the error i can say that it is not able to find the jars
>> > needed on classpath which is referred by scripts through
>> > HADOOP_COMMON_HOME. I would say check with the access permission as in
>> > which user was it installed with and which user is it running with ?
>> >
>> > On Tue, Nov 29, 2011 at 10:48 PM, cat fa > >wrote:
>> >
>> >> Thank you for your help, but I'm still a little confused.
>> >> Suppose I installed hadoop in /usr/bin/hadoop/ .Should I
>> >> point HADOOP_COMMON_HOME to /usr/bin/hadoop ? Where should I
>> >> point HADOOP_HDFS_HOME? Also to /usr/bin/hadoop/ ?
>> >>
>> >> 2011/11/30 Prashant Sharma
>> >>
>> >> > I mean, you have to export the variables
>> >> >
>> >> > export HADOOP_CONF_DIR=/path/to/your/configdirectory.
>> >> >
>> >> > also export HADOOP_HDFS_HOME ,HADOOP_COMMON_HOME. before your run your
>> >> > command. I suppose this should fix the problem.
>> >> > -P
>> >> >
>> >> > On Tue, Nov 29, 2011 at 6:23 PM, cat fa
>> >> > wrote:
>> >> >
>> >> > > it didn't work. It gave me the Usage information.
>> >> > >
>> >> > > 2011/11/29 hailong.yang1115
>> >> > >
>> >> > > > Try $HADOOP_PREFIX_HOME/bin/hdfs namenode stop --config
>> >> > $HADOOP_CONF_DIR
>> >> > > > and $HADOOP_PREFIX_HOME/bin/hdfs datanode stop --config
>> >> > $HADOOP_CONF_DIR.
>> >> > > > It would stop namenode and datanode separately.
>> >> > > > The HADOOP_CONF_DIR is the directory where you store your
>> >> configuration
>> >> > > > files.
>> >> > > > Hailong
>> >> > > >
>> >> > > >
>> >> > > >
>> >> > > >
>> >> > > > ***
>> >> > > > * Hailong Yang, PhD. Candidate
>> >> > > > * Sino-German Joint Software Institute,
>> >> > > > * School of Computer Science&Engineering, Beihang University
>> >> > > > * Phone: (86-010)82315908
>> >> > > > * Email: hailong.yang1...@gmail.com
>> >> > > > * Address: G413, New Main Building in Beihang University,
>> >> > > > * No.37 XueYuan Road,HaiDian District,
>> >> > > > * Beijing,P.R.China,100191
>> >> > > > ***
>> >> > > >
>> >> > > > From: cat fa
>> >> > > > Date: 2011-11-29 20:22
>> >> > > > To: common-user
>> >> > > > Subject: Re: [help]how to stop HDFS
>> >> > > > use $HADOOP_CONF or $HADOOP_CONF_DIR ? I'm using hadoop 0.23.
>> >> > > >
>> >> > > > you mean which class? the class of hadoop or of java?
>> >> > > >
>> >> > > > 2011/11/29 Prashant Sharma
>> >> > > >
>> >> > > > > Try making $HADOOP_CONF point to right classpath including your
>> >> > > > > configuration folder.
>> >> > > > >
>> >> > > > >
>> >> > > > > On Tue, Nov 29, 2011 at 3:58 PM, cat fa <
>> >> boost.subscrib...@gmail.com
>> >> > >
>> >> > > > > wrote:
>> >> > > > >
>> >> > > > > > I used the command :
>> >> > > > > >
>> >> > > > > > $HADOOP_PREFIX_HOME/bin/hdfs start namenode --config
>> >> > $HADOOP_CONF_DIR
>> >> > > > > >
>> >> > > > > > to sart HDFS.
>> >> > > > > >
>> >> > > > > > This command is in Hadoop document (here
>> >> > > > > > <
>> >> > > > > >
>> >> > > > >
>> >> > > >
>> >> > >
>> >> >
>> >>
>> http://hadoop.apache.org/common/docs/r0.23.0/hadoop-yarn/hadoop-yarn-site/ClusterSetup.html
>> >> > > > > > >)
>> >> > > > > >
>> >> > > > > > However, I got errors as
>> >> > > > > >
>> >> > > > > > Exception in thread "main"
>> java.lang.NoClassDefFoundError:start
>> >> > > > > >
>> >> > > > > > Could anyone tell me how to start and stop HDFS?
>> >> > > > > >
>> >> > > > > > By the way, how to set Gmail so that it doesn't top post my
>> >> reply?
>> >> > > > > >
>> >> > > > >
>> >> > > >
>> >> > >
>> >> >
>> >>
>> >
>>
>
>
>
> --
>
>
> Nitin Khandelwal
>
--
Harsh J
Re: Re: [help]how to stop HDFS
I am using Hadoop 0.23.0
There is no hadoop-daemon.sh in bin directory..
Thanks,
Nitin
On 30 November 2011 09:49, Harsh J wrote:
> I simply use the /sbin/hadoop-daemon.sh {start|stop} {service} script
> to control daemons at my end.
>
> Does this not work for you? Or perhaps this thread is more about
> documenting that?
>
> 2011/11/30 Nitin Khandelwal :
> > Hi,
> >
> > Even i am facing the same problem. There may be some issue with script .
> > The doc says to start namenode type :
> > bin/hdfs namenode start
> >
> > But "start" is not recognized. There is a hack to start namenode with
> > command "bin/hdfs namenode &" , but no idea how to stop.
> > If it had been a issue with config , the later also should not have
> worked.
> >
> > Thanks,
> > Nitin
> >
> >
> > 2011/11/30 cat fa
> >
> >> In fact it's me to say sorry. I used the word "install" which was
> >> misleading.
> >>
> >> In fact I downloaded a tar file and extracted it to ／usr／bin／hadoop
> >>
> >> Could you please tell me where to point those variables？
> >>
> >> 2011/11/30, Prashant Sharma :
> >> > I am sorry, I had no idea you have done a rpm install, my suggestion
> was
> >> > based on the assumption that you have done a tar extract install where
> >> all
> >> > three distribution have to extracted and then export variables.
> >> > Also I have no experience with rpm based installs - so no comments
> about
> >> > what went wrong in your case.
> >> >
> >> > Basically from the error i can say that it is not able to find the
> jars
> >> > needed on classpath which is referred by scripts through
> >> > HADOOP_COMMON_HOME. I would say check with the access permission as in
> >> > which user was it installed with and which user is it running with ?
> >> >
> >> > On Tue, Nov 29, 2011 at 10:48 PM, cat fa >> >wrote:
> >> >
> >> >> Thank you for your help, but I'm still a little confused.
> >> >> Suppose I installed hadoop in /usr/bin/hadoop/ .Should I
> >> >> point HADOOP_COMMON_HOME to /usr/bin/hadoop ? Where should I
> >> >> point HADOOP_HDFS_HOME? Also to /usr/bin/hadoop/ ?
> >> >>
> >> >> 2011/11/30 Prashant Sharma
> >> >>
> >> >> > I mean, you have to export the variables
> >> >> >
> >> >> > export HADOOP_CONF_DIR=/path/to/your/configdirectory.
> >> >> >
> >> >> > also export HADOOP_HDFS_HOME ,HADOOP_COMMON_HOME. before your run
> your
> >> >> > command. I suppose this should fix the problem.
> >> >> > -P
> >> >> >
> >> >> > On Tue, Nov 29, 2011 at 6:23 PM, cat fa <
> boost.subscrib...@gmail.com>
> >> >> > wrote:
> >> >> >
> >> >> > > it didn't work. It gave me the Usage information.
> >> >> > >
> >> >> > > 2011/11/29 hailong.yang1115
> >> >> > >
> >> >> > > > Try $HADOOP_PREFIX_HOME/bin/hdfs namenode stop --config
> >> >> > $HADOOP_CONF_DIR
> >> >> > > > and $HADOOP_PREFIX_HOME/bin/hdfs datanode stop --config
> >> >> > $HADOOP_CONF_DIR.
> >> >> > > > It would stop namenode and datanode separately.
> >> >> > > > The HADOOP_CONF_DIR is the directory where you store your
> >> >> configuration
> >> >> > > > files.
> >> >> > > > Hailong
> >> >> > > >
> >> >> > > >
> >> >> > > >
> >> >> > > >
> >> >> > > > ***
> >> >> > > > * Hailong Yang, PhD. Candidate
> >> >> > > > * Sino-German Joint Software Institute,
> >> >> > > > * School of Computer Science&Engineering, Beihang University
> >> >> > > > * Phone: (86-010)82315908
> >> >> > > > * Email: hailong.yang1...@gmail.com
> >> >> > > > * Address: G413, New Main Building in Beihang University,
> >> >> > > > * No.37 XueYuan Road,HaiDian District,
> >> >> > > > * Beijing,P.R.China,100191
> >> >> > > > ***
> >> >> > > >
> >> >> > > > From: cat fa
> >> >> > > > Date: 2011-11-29 20:22
> >> >> > > > To: common-user
> >> >> > > > Subject: Re: [help]how to stop HDFS
> >> >> > > > use $HADOOP_CONF or $HADOOP_CONF_DIR ? I'm using hadoop 0.23.
> >> >> > > >
> >> >> > > > you mean which class? the class of hadoop or of java?
> >> >> > > >
> >> >> > > > 2011/11/29 Prashant Sharma
> >> >> > > >
> >> >> > > > > Try making $HADOOP_CONF point to right classpath including
> your
> >> >> > > > > configuration folder.
> >> >> > > > >
> >> >> > > > >
> >> >> > > > > On Tue, Nov 29, 2011 at 3:58 PM, cat fa <
> >> >> boost.subscrib...@gmail.com
> >> >> > >
> >> >> > > > > wrote:
> >> >> > > > >
> >> >> > > > > > I used the command :
> >> >> > > > > >
> >> >> > > > > > $HADOOP_PREFIX_HOME/bin/hdfs start namenode --config
> >> >> > $HADOOP_CONF_DIR
> >> >> > > > > >
> >> >> > > > > > to sart HDFS.
> >> >> > > > > >
> >> >> > > > > > This command is in Hadoop document (here
> >> >> > > > > > <
> >> >> > > > > >
> >> >> > > > >
> >> >> > > >
> >> >> > >
> >> >> >
> >> >>
> >>
> http://hadoop.apache.org/common/docs/r0.23.0/hadoop-yarn/hadoop-yarn-site/ClusterSetup.html
> >> >> > > > > > >)
> >> >> > > > > >
> >> >> > > > > > However, I got errors as
> >> >> > > > > >
> >> >> > > > > > Exception in thread "main"
>
Re: Re: [help]how to stop HDFS
Like I wrote earlier, its in the $HADOOP_HOME/sbin directory. Not the
regular bin/ directory.
On Wed, Nov 30, 2011 at 9:52 AM, Nitin Khandelwal
wrote:
> I am using Hadoop 0.23.0
> There is no hadoop-daemon.sh in bin directory..
>
> Thanks,
> Nitin
>
> On 30 November 2011 09:49, Harsh J wrote:
>
>> I simply use the /sbin/hadoop-daemon.sh {start|stop} {service} script
>> to control daemons at my end.
>>
>> Does this not work for you? Or perhaps this thread is more about
>> documenting that?
>>
>> 2011/11/30 Nitin Khandelwal :
>> > Hi,
>> >
>> > Even i am facing the same problem. There may be some issue with script .
>> > The doc says to start namenode type :
>> > bin/hdfs namenode start
>> >
>> > But "start" is not recognized. There is a hack to start namenode with
>> > command "bin/hdfs namenode &" , but no idea how to stop.
>> > If it had been a issue with config , the later also should not have
>> worked.
>> >
>> > Thanks,
>> > Nitin
>> >
>> >
>> > 2011/11/30 cat fa
>> >
>> >> In fact it's me to say sorry. I used the word "install" which was
>> >> misleading.
>> >>
>> >> In fact I downloaded a tar file and extracted it to ／usr／bin／hadoop
>> >>
>> >> Could you please tell me where to point those variables？
>> >>
>> >> 2011/11/30, Prashant Sharma :
>> >> > I am sorry, I had no idea you have done a rpm install, my suggestion
>> was
>> >> > based on the assumption that you have done a tar extract install where
>> >> all
>> >> > three distribution have to extracted and then export variables.
>> >> > Also I have no experience with rpm based installs - so no comments
>> about
>> >> > what went wrong in your case.
>> >> >
>> >> > Basically from the error i can say that it is not able to find the
>> jars
>> >> > needed on classpath which is referred by scripts through
>> >> > HADOOP_COMMON_HOME. I would say check with the access permission as in
>> >> > which user was it installed with and which user is it running with ?
>> >> >
>> >> > On Tue, Nov 29, 2011 at 10:48 PM, cat fa > >> >wrote:
>> >> >
>> >> >> Thank you for your help, but I'm still a little confused.
>> >> >> Suppose I installed hadoop in /usr/bin/hadoop/ .Should I
>> >> >> point HADOOP_COMMON_HOME to /usr/bin/hadoop ? Where should I
>> >> >> point HADOOP_HDFS_HOME? Also to /usr/bin/hadoop/ ?
>> >> >>
>> >> >> 2011/11/30 Prashant Sharma
>> >> >>
>> >> >> > I mean, you have to export the variables
>> >> >> >
>> >> >> > export HADOOP_CONF_DIR=/path/to/your/configdirectory.
>> >> >> >
>> >> >> > also export HADOOP_HDFS_HOME ,HADOOP_COMMON_HOME. before your run
>> your
>> >> >> > command. I suppose this should fix the problem.
>> >> >> > -P
>> >> >> >
>> >> >> > On Tue, Nov 29, 2011 at 6:23 PM, cat fa <
>> boost.subscrib...@gmail.com>
>> >> >> > wrote:
>> >> >> >
>> >> >> > > it didn't work. It gave me the Usage information.
>> >> >> > >
>> >> >> > > 2011/11/29 hailong.yang1115
>> >> >> > >
>> >> >> > > > Try $HADOOP_PREFIX_HOME/bin/hdfs namenode stop --config
>> >> >> > $HADOOP_CONF_DIR
>> >> >> > > > and $HADOOP_PREFIX_HOME/bin/hdfs datanode stop --config
>> >> >> > $HADOOP_CONF_DIR.
>> >> >> > > > It would stop namenode and datanode separately.
>> >> >> > > > The HADOOP_CONF_DIR is the directory where you store your
>> >> >> configuration
>> >> >> > > > files.
>> >> >> > > > Hailong
>> >> >> > > >
>> >> >> > > >
>> >> >> > > >
>> >> >> > > >
>> >> >> > > > ***
>> >> >> > > > * Hailong Yang, PhD. Candidate
>> >> >> > > > * Sino-German Joint Software Institute,
>> >> >> > > > * School of Computer Science&Engineering, Beihang University
>> >> >> > > > * Phone: (86-010)82315908
>> >> >> > > > * Email: hailong.yang1...@gmail.com
>> >> >> > > > * Address: G413, New Main Building in Beihang University,
>> >> >> > > > * No.37 XueYuan Road,HaiDian District,
>> >> >> > > > * Beijing,P.R.China,100191
>> >> >> > > > ***
>> >> >> > > >
>> >> >> > > > From: cat fa
>> >> >> > > > Date: 2011-11-29 20:22
>> >> >> > > > To: common-user
>> >> >> > > > Subject: Re: [help]how to stop HDFS
>> >> >> > > > use $HADOOP_CONF or $HADOOP_CONF_DIR ? I'm using hadoop 0.23.
>> >> >> > > >
>> >> >> > > > you mean which class? the class of hadoop or of java?
>> >> >> > > >
>> >> >> > > > 2011/11/29 Prashant Sharma
>> >> >> > > >
>> >> >> > > > > Try making $HADOOP_CONF point to right classpath including
>> your
>> >> >> > > > > configuration folder.
>> >> >> > > > >
>> >> >> > > > >
>> >> >> > > > > On Tue, Nov 29, 2011 at 3:58 PM, cat fa <
>> >> >> boost.subscrib...@gmail.com
>> >> >> > >
>> >> >> > > > > wrote:
>> >> >> > > > >
>> >> >> > > > > > I used the command :
>> >> >> > > > > >
>> >> >> > > > > > $HADOOP_PREFIX_HOME/bin/hdfs start namenode --config
>> >> >> > $HADOOP_CONF_DIR
>> >> >> > > > > >
>> >> >> > > > > > to sart HDFS.
>> >> >> > > > > >
>> >> >> > > > > > This command is in Hadoop document (here
>> >> >> > > > > > <
>> >> >> > > > > >
>> >> >> >
Re: Re: [help]how to stop HDFS
Thanks,
I missed the "sbin" directory, was using the normal bin directory.
Thanks,
Nitin
On 30 November 2011 09:54, Harsh J wrote:
> Like I wrote earlier, its in the $HADOOP_HOME/sbin directory. Not the
> regular bin/ directory.
>
> On Wed, Nov 30, 2011 at 9:52 AM, Nitin Khandelwal
> wrote:
> > I am using Hadoop 0.23.0
> > There is no hadoop-daemon.sh in bin directory..
> >
> > Thanks,
> > Nitin
> >
> > On 30 November 2011 09:49, Harsh J wrote:
> >
> >> I simply use the /sbin/hadoop-daemon.sh {start|stop} {service} script
> >> to control daemons at my end.
> >>
> >> Does this not work for you? Or perhaps this thread is more about
> >> documenting that?
> >>
> >> 2011/11/30 Nitin Khandelwal :
> >> > Hi,
> >> >
> >> > Even i am facing the same problem. There may be some issue with
> script .
> >> > The doc says to start namenode type :
> >> > bin/hdfs namenode start
> >> >
> >> > But "start" is not recognized. There is a hack to start namenode with
> >> > command "bin/hdfs namenode &" , but no idea how to stop.
> >> > If it had been a issue with config , the later also should not have
> >> worked.
> >> >
> >> > Thanks,
> >> > Nitin
> >> >
> >> >
> >> > 2011/11/30 cat fa
> >> >
> >> >> In fact it's me to say sorry. I used the word "install" which was
> >> >> misleading.
> >> >>
> >> >> In fact I downloaded a tar file and extracted it to ／usr／bin／hadoop
> >> >>
> >> >> Could you please tell me where to point those variables？
> >> >>
> >> >> 2011/11/30, Prashant Sharma :
> >> >> > I am sorry, I had no idea you have done a rpm install, my
> suggestion
> >> was
> >> >> > based on the assumption that you have done a tar extract install
> where
> >> >> all
> >> >> > three distribution have to extracted and then export variables.
> >> >> > Also I have no experience with rpm based installs - so no comments
> >> about
> >> >> > what went wrong in your case.
> >> >> >
> >> >> > Basically from the error i can say that it is not able to find the
> >> jars
> >> >> > needed on classpath which is referred by scripts through
> >> >> > HADOOP_COMMON_HOME. I would say check with the access permission
> as in
> >> >> > which user was it installed with and which user is it running with
> ?
> >> >> >
> >> >> > On Tue, Nov 29, 2011 at 10:48 PM, cat fa <
> boost.subscrib...@gmail.com
> >> >> >wrote:
> >> >> >
> >> >> >> Thank you for your help, but I'm still a little confused.
> >> >> >> Suppose I installed hadoop in /usr/bin/hadoop/ .Should I
> >> >> >> point HADOOP_COMMON_HOME to /usr/bin/hadoop ? Where should I
> >> >> >> point HADOOP_HDFS_HOME? Also to /usr/bin/hadoop/ ?
> >> >> >>
> >> >> >> 2011/11/30 Prashant Sharma
> >> >> >>
> >> >> >> > I mean, you have to export the variables
> >> >> >> >
> >> >> >> > export HADOOP_CONF_DIR=/path/to/your/configdirectory.
> >> >> >> >
> >> >> >> > also export HADOOP_HDFS_HOME ,HADOOP_COMMON_HOME. before your
> run
> >> your
> >> >> >> > command. I suppose this should fix the problem.
> >> >> >> > -P
> >> >> >> >
> >> >> >> > On Tue, Nov 29, 2011 at 6:23 PM, cat fa <
> >> boost.subscrib...@gmail.com>
> >> >> >> > wrote:
> >> >> >> >
> >> >> >> > > it didn't work. It gave me the Usage information.
> >> >> >> > >
> >> >> >> > > 2011/11/29 hailong.yang1115
> >> >> >> > >
> >> >> >> > > > Try $HADOOP_PREFIX_HOME/bin/hdfs namenode stop --config
> >> >> >> > $HADOOP_CONF_DIR
> >> >> >> > > > and $HADOOP_PREFIX_HOME/bin/hdfs datanode stop --config
> >> >> >> > $HADOOP_CONF_DIR.
> >> >> >> > > > It would stop namenode and datanode separately.
> >> >> >> > > > The HADOOP_CONF_DIR is the directory where you store your
> >> >> >> configuration
> >> >> >> > > > files.
> >> >> >> > > > Hailong
> >> >> >> > > >
> >> >> >> > > >
> >> >> >> > > >
> >> >> >> > > >
> >> >> >> > > > ***
> >> >> >> > > > * Hailong Yang, PhD. Candidate
> >> >> >> > > > * Sino-German Joint Software Institute,
> >> >> >> > > > * School of Computer Science&Engineering, Beihang University
> >> >> >> > > > * Phone: (86-010)82315908
> >> >> >> > > > * Email: hailong.yang1...@gmail.com
> >> >> >> > > > * Address: G413, New Main Building in Beihang University,
> >> >> >> > > > * No.37 XueYuan Road,HaiDian District,
> >> >> >> > > > * Beijing,P.R.China,100191
> >> >> >> > > > ***
> >> >> >> > > >
> >> >> >> > > > From: cat fa
> >> >> >> > > > Date: 2011-11-29 20:22
> >> >> >> > > > To: common-user
> >> >> >> > > > Subject: Re: [help]how to stop HDFS
> >> >> >> > > > use $HADOOP_CONF or $HADOOP_CONF_DIR ? I'm using hadoop
> 0.23.
> >> >> >> > > >
> >> >> >> > > > you mean which class? the class of hadoop or of java?
> >> >> >> > > >
> >> >> >> > > > 2011/11/29 Prashant Sharma
> >> >> >> > > >
> >> >> >> > > > > Try making $HADOOP_CONF point to right classpath including
> >> your
> >> >> >> > > > > configuration folder.
> >> >> >> > > > >
> >> >> >> > > > >
> >> >> >> > > > > On Tue, Nov 29, 2011 at 3:58 PM, cat fa
Re: Re: [help]how to stop HDFS
Thank you for your help.
I can use /sbin/hadoop-daemon.sh {start|stop} {service} script to start a
namenode, but I can't start a resourcemanager.
2011/11/30 Harsh J
> I simply use the /sbin/hadoop-daemon.sh {start|stop} {service} script
> to control daemons at my end.
>
> Does this not work for you? Or perhaps this thread is more about
> documenting that?
>
> 2011/11/30 Nitin Khandelwal :
> > Hi,
> >
> > Even i am facing the same problem. There may be some issue with script .
> > The doc says to start namenode type :
> > bin/hdfs namenode start
> >
> > But "start" is not recognized. There is a hack to start namenode with
> > command "bin/hdfs namenode &" , but no idea how to stop.
> > If it had been a issue with config , the later also should not have
> worked.
> >
> > Thanks,
> > Nitin
> >
> >
> > 2011/11/30 cat fa
> >
> >> In fact it's me to say sorry. I used the word "install" which was
> >> misleading.
> >>
> >> In fact I downloaded a tar file and extracted it to ／usr／bin／hadoop
> >>
> >> Could you please tell me where to point those variables？
> >>
> >> 2011/11/30, Prashant Sharma :
> >> > I am sorry, I had no idea you have done a rpm install, my suggestion
> was
> >> > based on the assumption that you have done a tar extract install where
> >> all
> >> > three distribution have to extracted and then export variables.
> >> > Also I have no experience with rpm based installs - so no comments
> about
> >> > what went wrong in your case.
> >> >
> >> > Basically from the error i can say that it is not able to find the
> jars
> >> > needed on classpath which is referred by scripts through
> >> > HADOOP_COMMON_HOME. I would say check with the access permission as in
> >> > which user was it installed with and which user is it running with ?
> >> >
> >> > On Tue, Nov 29, 2011 at 10:48 PM, cat fa >> >wrote:
> >> >
> >> >> Thank you for your help, but I'm still a little confused.
> >> >> Suppose I installed hadoop in /usr/bin/hadoop/ .Should I
> >> >> point HADOOP_COMMON_HOME to /usr/bin/hadoop ? Where should I
> >> >> point HADOOP_HDFS_HOME? Also to /usr/bin/hadoop/ ?
> >> >>
> >> >> 2011/11/30 Prashant Sharma
> >> >>
> >> >> > I mean, you have to export the variables
> >> >> >
> >> >> > export HADOOP_CONF_DIR=/path/to/your/configdirectory.
> >> >> >
> >> >> > also export HADOOP_HDFS_HOME ,HADOOP_COMMON_HOME. before your run
> your
> >> >> > command. I suppose this should fix the problem.
> >> >> > -P
> >> >> >
> >> >> > On Tue, Nov 29, 2011 at 6:23 PM, cat fa <
> boost.subscrib...@gmail.com>
> >> >> > wrote:
> >> >> >
> >> >> > > it didn't work. It gave me the Usage information.
> >> >> > >
> >> >> > > 2011/11/29 hailong.yang1115
> >> >> > >
> >> >> > > > Try $HADOOP_PREFIX_HOME/bin/hdfs namenode stop --config
> >> >> > $HADOOP_CONF_DIR
> >> >> > > > and $HADOOP_PREFIX_HOME/bin/hdfs datanode stop --config
> >> >> > $HADOOP_CONF_DIR.
> >> >> > > > It would stop namenode and datanode separately.
> >> >> > > > The HADOOP_CONF_DIR is the directory where you store your
> >> >> configuration
> >> >> > > > files.
> >> >> > > > Hailong
> >> >> > > >
> >> >> > > >
> >> >> > > >
> >> >> > > >
> >> >> > > > ***
> >> >> > > > * Hailong Yang, PhD. Candidate
> >> >> > > > * Sino-German Joint Software Institute,
> >> >> > > > * School of Computer Science&Engineering, Beihang University
> >> >> > > > * Phone: (86-010)82315908
> >> >> > > > * Email: hailong.yang1...@gmail.com
> >> >> > > > * Address: G413, New Main Building in Beihang University,
> >> >> > > > * No.37 XueYuan Road,HaiDian District,
> >> >> > > > * Beijing,P.R.China,100191
> >> >> > > > ***
> >> >> > > >
> >> >> > > > From: cat fa
> >> >> > > > Date: 2011-11-29 20:22
> >> >> > > > To: common-user
> >> >> > > > Subject: Re: [help]how to stop HDFS
> >> >> > > > use $HADOOP_CONF or $HADOOP_CONF_DIR ? I'm using hadoop 0.23.
> >> >> > > >
> >> >> > > > you mean which class? the class of hadoop or of java?
> >> >> > > >
> >> >> > > > 2011/11/29 Prashant Sharma
> >> >> > > >
> >> >> > > > > Try making $HADOOP_CONF point to right classpath including
> your
> >> >> > > > > configuration folder.
> >> >> > > > >
> >> >> > > > >
> >> >> > > > > On Tue, Nov 29, 2011 at 3:58 PM, cat fa <
> >> >> boost.subscrib...@gmail.com
> >> >> > >
> >> >> > > > > wrote:
> >> >> > > > >
> >> >> > > > > > I used the command :
> >> >> > > > > >
> >> >> > > > > > $HADOOP_PREFIX_HOME/bin/hdfs start namenode --config
> >> >> > $HADOOP_CONF_DIR
> >> >> > > > > >
> >> >> > > > > > to sart HDFS.
> >> >> > > > > >
> >> >> > > > > > This command is in Hadoop document (here
> >> >> > > > > > <
> >> >> > > > > >
> >> >> > > > >
> >> >> > > >
> >> >> > >
> >> >> >
> >> >>
> >>
> http://hadoop.apache.org/common/docs/r0.23.0/hadoop-yarn/hadoop-yarn-site/ClusterSetup.html
> >> >> > > > > > >)
> >> >> > > > > >
> >> >> > > > > > However, I got errors as
> >> >> > > > > >
> >> >> > >
