You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-user@hadoop.apache.org by Rob Stewart <ro...@googlemail.com> on 2010/01/14 14:41:45 UTC
Unable to exit safe mode
Hi,
I'm having a slight issue with my Hadoop cluster. There are 32 nodes. I
have:
/usr/lib/hadoop/bin/stop-mapred.sh
/usr/lib/hadoop/bin/stop-dfs.sh
/usr/lib/hadoop/bin/start-dfs.sh
/usr/lib/hadoop/bin/start-mapred.sh
All worked perfectly, no errors.
I try and remove a file: hadoop dfs -rmr wordCountOutput.jaql
This returns: Cannot delete [the file]. Name node is in safe mode.
I tried to exit safemode manually. I get:
> hadoop dfsadmin -safemode leave
FileSystem is file:///
The code generating this is:
public void setSafeMode(String[] argv, int idx) throws IOException {
final String safeModeUsage = "Usage: java DFSAdmin -safemode "
+ "[enter | leave | get]";
if (!(fs instanceof DistributedFileSystem)) {
System.out.println("FileSystem is " + fs.getName());
return;
}
What seems to be the issue? the HDFS is running, and I can browse the
filesystem, both via the command line and the Hadoop web interface.
Thanks...
Re: Unable to exit safe mode
Posted by Rob Stewart <ro...@googlemail.com>.
Fantastic,
I had a look at the hdfs-site.xml and realised the port was 54310.
I was able to turn OFF the safe mode, and have just deleted the file.
Thank you very much indeed Wang.
Rob.
2010/1/14 Wang Xu <gn...@gmail.com>
> Hi Rob,
>
> How about the "fs.default.name" in your configuration files, and can
> you find NameNode process with jps?
>
> On Thu, Jan 14, 2010 at 10:16 PM, Rob Stewart
> <ro...@googlemail.com> wrote:
> > Hi Wang,
> >
> >> hadoop dfsadmin -report
> >
> > returns nothing at all.
> >
> > I have tried:
> >> hadoop dfsadmin -fs hdfs://hadoopmaster/ -safemode leave
> >
> > 10/01/14 14:11:24 INFO ipc.Client: Retrying connect to server:
> hadoopmaster/
> > 137.195.143.132:8020. Already tried 0 time(s).
> > 10/01/14 14:11:25 INFO ipc.Client: Retrying connect to server:
> hadoopmaster/
> > 137.195.143.132:8020. Already tried 1 time(s).
> > etc......
> >
> > ??
> >
> > thanks..
> >
> >
> >
> > 2010/1/14 Wang Xu <gn...@gmail.com>
> >
> >> Hi Rob,
> >>
> >> What do you get if you use
> >> hadoop dfsadmin -report
> >> ?
> >>
> >> And you can specify the fs in command line when you call dfsadmin.
> >>
> >> On Thu, Jan 14, 2010 at 9:41 PM, Rob Stewart
> >> <ro...@googlemail.com> wrote:
> >> > Hi,
> >> >
> >> > I'm having a slight issue with my Hadoop cluster. There are 32 nodes.
> I
> >> > have:
> >> > /usr/lib/hadoop/bin/stop-mapred.sh
> >> > /usr/lib/hadoop/bin/stop-dfs.sh
> >> > /usr/lib/hadoop/bin/start-dfs.sh
> >> > /usr/lib/hadoop/bin/start-mapred.sh
> >> >
> >> > All worked perfectly, no errors.
> >> >
> >> > I try and remove a file: hadoop dfs -rmr wordCountOutput.jaql
> >> >
> >> > This returns: Cannot delete [the file]. Name node is in safe mode.
> >> >
> >> > I tried to exit safemode manually. I get:
> >> >> hadoop dfsadmin -safemode leave
> >> > FileSystem is file:///
> >> >
> >> > The code generating this is:
> >> >
> >> >
> >> > public void setSafeMode(String[] argv, int idx) throws IOException {
> >> > final String safeModeUsage = "Usage: java DFSAdmin -safemode "
> >> > + "[enter | leave | get]";
> >> > if (!(fs instanceof DistributedFileSystem)) {
> >> > System.out.println("FileSystem is " + fs.getName());
> >> > return;
> >> > }
> >> >
> >> >
> >> > What seems to be the issue? the HDFS is running, and I can browse the
> >> > filesystem, both via the command line and the Hadoop web interface.
> >> >
> >> >
> >> > Thanks...
> >> >
> >>
> >>
> >>
> >> --
> >> Wang Xu
> >> Stephen Leacock - "I detest life-insurance agents: they always argue
> >> that I shall some day die, which is not so." -
> >> http://www.brainyquote.com/quotes/authors/s/stephen_leacock.html
> >>
> >
>
>
>
> --
> Wang Xu
> Mike Ditka - "If God had wanted man to play soccer, he wouldn't have
> given us arms." -
> http://www.brainyquote.com/quotes/authors/m/mike_ditka.html
>
Re: Unable to exit safe mode
Posted by Wang Xu <gn...@gmail.com>.
Hi Rob,
How about the "fs.default.name" in your configuration files, and can
you find NameNode process with jps?
On Thu, Jan 14, 2010 at 10:16 PM, Rob Stewart
<ro...@googlemail.com> wrote:
> Hi Wang,
>
>> hadoop dfsadmin -report
>
> returns nothing at all.
>
> I have tried:
>> hadoop dfsadmin -fs hdfs://hadoopmaster/ -safemode leave
>
> 10/01/14 14:11:24 INFO ipc.Client: Retrying connect to server: hadoopmaster/
> 137.195.143.132:8020. Already tried 0 time(s).
> 10/01/14 14:11:25 INFO ipc.Client: Retrying connect to server: hadoopmaster/
> 137.195.143.132:8020. Already tried 1 time(s).
> etc......
>
> ??
>
> thanks..
>
>
>
> 2010/1/14 Wang Xu <gn...@gmail.com>
>
>> Hi Rob,
>>
>> What do you get if you use
>> hadoop dfsadmin -report
>> ?
>>
>> And you can specify the fs in command line when you call dfsadmin.
>>
>> On Thu, Jan 14, 2010 at 9:41 PM, Rob Stewart
>> <ro...@googlemail.com> wrote:
>> > Hi,
>> >
>> > I'm having a slight issue with my Hadoop cluster. There are 32 nodes. I
>> > have:
>> > /usr/lib/hadoop/bin/stop-mapred.sh
>> > /usr/lib/hadoop/bin/stop-dfs.sh
>> > /usr/lib/hadoop/bin/start-dfs.sh
>> > /usr/lib/hadoop/bin/start-mapred.sh
>> >
>> > All worked perfectly, no errors.
>> >
>> > I try and remove a file: hadoop dfs -rmr wordCountOutput.jaql
>> >
>> > This returns: Cannot delete [the file]. Name node is in safe mode.
>> >
>> > I tried to exit safemode manually. I get:
>> >> hadoop dfsadmin -safemode leave
>> > FileSystem is file:///
>> >
>> > The code generating this is:
>> >
>> >
>> > public void setSafeMode(String[] argv, int idx) throws IOException {
>> > final String safeModeUsage = "Usage: java DFSAdmin -safemode "
>> > + "[enter | leave | get]";
>> > if (!(fs instanceof DistributedFileSystem)) {
>> > System.out.println("FileSystem is " + fs.getName());
>> > return;
>> > }
>> >
>> >
>> > What seems to be the issue? the HDFS is running, and I can browse the
>> > filesystem, both via the command line and the Hadoop web interface.
>> >
>> >
>> > Thanks...
>> >
>>
>>
>>
>> --
>> Wang Xu
>> Stephen Leacock - "I detest life-insurance agents: they always argue
>> that I shall some day die, which is not so." -
>> http://www.brainyquote.com/quotes/authors/s/stephen_leacock.html
>>
>
--
Wang Xu
Mike Ditka - "If God had wanted man to play soccer, he wouldn't have
given us arms." -
http://www.brainyquote.com/quotes/authors/m/mike_ditka.html
Re: Unable to exit safe mode
Posted by Rob Stewart <ro...@googlemail.com>.
Hi Wang,
> hadoop dfsadmin -report
returns nothing at all.
I have tried:
> hadoop dfsadmin -fs hdfs://hadoopmaster/ -safemode leave
10/01/14 14:11:24 INFO ipc.Client: Retrying connect to server: hadoopmaster/
137.195.143.132:8020. Already tried 0 time(s).
10/01/14 14:11:25 INFO ipc.Client: Retrying connect to server: hadoopmaster/
137.195.143.132:8020. Already tried 1 time(s).
etc......
??
thanks..
2010/1/14 Wang Xu <gn...@gmail.com>
> Hi Rob,
>
> What do you get if you use
> hadoop dfsadmin -report
> ?
>
> And you can specify the fs in command line when you call dfsadmin.
>
> On Thu, Jan 14, 2010 at 9:41 PM, Rob Stewart
> <ro...@googlemail.com> wrote:
> > Hi,
> >
> > I'm having a slight issue with my Hadoop cluster. There are 32 nodes. I
> > have:
> > /usr/lib/hadoop/bin/stop-mapred.sh
> > /usr/lib/hadoop/bin/stop-dfs.sh
> > /usr/lib/hadoop/bin/start-dfs.sh
> > /usr/lib/hadoop/bin/start-mapred.sh
> >
> > All worked perfectly, no errors.
> >
> > I try and remove a file: hadoop dfs -rmr wordCountOutput.jaql
> >
> > This returns: Cannot delete [the file]. Name node is in safe mode.
> >
> > I tried to exit safemode manually. I get:
> >> hadoop dfsadmin -safemode leave
> > FileSystem is file:///
> >
> > The code generating this is:
> >
> >
> > public void setSafeMode(String[] argv, int idx) throws IOException {
> > final String safeModeUsage = "Usage: java DFSAdmin -safemode "
> > + "[enter | leave | get]";
> > if (!(fs instanceof DistributedFileSystem)) {
> > System.out.println("FileSystem is " + fs.getName());
> > return;
> > }
> >
> >
> > What seems to be the issue? the HDFS is running, and I can browse the
> > filesystem, both via the command line and the Hadoop web interface.
> >
> >
> > Thanks...
> >
>
>
>
> --
> Wang Xu
> Stephen Leacock - "I detest life-insurance agents: they always argue
> that I shall some day die, which is not so." -
> http://www.brainyquote.com/quotes/authors/s/stephen_leacock.html
>
Re: Unable to exit safe mode
Posted by Wang Xu <gn...@gmail.com>.
Hi Rob,
What do you get if you use
hadoop dfsadmin -report
?
And you can specify the fs in command line when you call dfsadmin.
On Thu, Jan 14, 2010 at 9:41 PM, Rob Stewart
<ro...@googlemail.com> wrote:
> Hi,
>
> I'm having a slight issue with my Hadoop cluster. There are 32 nodes. I
> have:
> /usr/lib/hadoop/bin/stop-mapred.sh
> /usr/lib/hadoop/bin/stop-dfs.sh
> /usr/lib/hadoop/bin/start-dfs.sh
> /usr/lib/hadoop/bin/start-mapred.sh
>
> All worked perfectly, no errors.
>
> I try and remove a file: hadoop dfs -rmr wordCountOutput.jaql
>
> This returns: Cannot delete [the file]. Name node is in safe mode.
>
> I tried to exit safemode manually. I get:
>> hadoop dfsadmin -safemode leave
> FileSystem is file:///
>
> The code generating this is:
>
>
> public void setSafeMode(String[] argv, int idx) throws IOException {
> final String safeModeUsage = "Usage: java DFSAdmin -safemode "
> + "[enter | leave | get]";
> if (!(fs instanceof DistributedFileSystem)) {
> System.out.println("FileSystem is " + fs.getName());
> return;
> }
>
>
> What seems to be the issue? the HDFS is running, and I can browse the
> filesystem, both via the command line and the Hadoop web interface.
>
>
> Thanks...
>
--
Wang Xu
Stephen Leacock - "I detest life-insurance agents: they always argue
that I shall some day die, which is not so." -
http://www.brainyquote.com/quotes/authors/s/stephen_leacock.html