Alberto Cordioli
2012-09-14, 13:18
Shumin Wu
2012-09-14, 16:19
Alberto Cordioli
2012-09-16, 01:04
Michel Segel
2012-09-17, 03:08
shashwat shriparv
2012-09-17, 05:47
Alberto Cordioli
2012-09-17, 07:39
shashwat shriparv
2012-09-17, 09:54
Alberto Cordioli
2012-09-17, 10:09
Stack
2012-09-17, 16:17
-
Problem with Hadoop and /etc/hosts fileAlberto Cordioli 2012-09-14, 13:18
Hi,
I've successfully installed Apache HBase on a cluster with Hadoop.
It works fine, but when I try to use Pig to load some data from an
HBase table I get this error:
ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase - Cannot
resolve the host name for /10.220.55.41 because of
javax.naming.OperationNotSupportedException: DNS service refused
[response code 5]; remaining name '41.55.220.10.in-addr.arpa'
Pig returns in any case the correct results (actually I don't know
how), but I'd like to solve this issue.
I discovered that this error is due to a mistake in /etc/hosts
configuration file. In fact, as reported in the documentation, I
should add the line
127.0.0.1 hostname
(http://hbase.apache.org/book.html#os).
But if I add this entry my Hadoop cluster does not start since the
datanote is bind to the local address instead to the hostname/IP
address. For this reason in many tutorial it's suggested to remove
such entry (e.g.
http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode).
Basically if I add that line Hadoop won't work, but if I keep the file
without the loopback address I get the above error.
What can I do? Which is the right configuration?
Thanks,
Alberto
--
Alberto Cordioli
I've successfully installed Apache HBase on a cluster with Hadoop.
It works fine, but when I try to use Pig to load some data from an
HBase table I get this error:
ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase - Cannot
resolve the host name for /10.220.55.41 because of
javax.naming.OperationNotSupportedException: DNS service refused
[response code 5]; remaining name '41.55.220.10.in-addr.arpa'
Pig returns in any case the correct results (actually I don't know
how), but I'd like to solve this issue.
I discovered that this error is due to a mistake in /etc/hosts
configuration file. In fact, as reported in the documentation, I
should add the line
127.0.0.1 hostname
(http://hbase.apache.org/book.html#os).
But if I add this entry my Hadoop cluster does not start since the
datanote is bind to the local address instead to the hostname/IP
address. For this reason in many tutorial it's suggested to remove
such entry (e.g.
http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode).
Basically if I add that line Hadoop won't work, but if I keep the file
without the loopback address I get the above error.
What can I do? Which is the right configuration?
Thanks,
Alberto
--
Alberto Cordioli
-
Re: Problem with Hadoop and /etc/hosts fileShumin Wu 2012-09-14, 16:19
Would that work for you?
127.0.0.1 localhost
10.220.55.41 hostname
-Shumin
On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
[EMAIL PROTECTED]> wrote:
> Hi,
>
> I've successfully installed Apache HBase on a cluster with Hadoop.
> It works fine, but when I try to use Pig to load some data from an
> HBase table I get this error:
>
> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase - Cannot
> resolve the host name for /10.220.55.41 because of
> javax.naming.OperationNotSupportedException: DNS service refused
> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
>
> Pig returns in any case the correct results (actually I don't know
> how), but I'd like to solve this issue.
>
> I discovered that this error is due to a mistake in /etc/hosts
> configuration file. In fact, as reported in the documentation, I
> should add the line
> 127.0.0.1 hostname
> (http://hbase.apache.org/book.html#os).
>
> But if I add this entry my Hadoop cluster does not start since the
> datanote is bind to the local address instead to the hostname/IP
> address. For this reason in many tutorial it's suggested to remove
> such entry (e.g.
>
> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
> ).
>
> Basically if I add that line Hadoop won't work, but if I keep the file
> without the loopback address I get the above error.
> What can I do? Which is the right configuration?
>
>
> Thanks,
> Alberto
>
>
>
>
> --
> Alberto Cordioli
>
127.0.0.1 localhost
10.220.55.41 hostname
-Shumin
On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
[EMAIL PROTECTED]> wrote:
> Hi,
>
> I've successfully installed Apache HBase on a cluster with Hadoop.
> It works fine, but when I try to use Pig to load some data from an
> HBase table I get this error:
>
> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase - Cannot
> resolve the host name for /10.220.55.41 because of
> javax.naming.OperationNotSupportedException: DNS service refused
> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
>
> Pig returns in any case the correct results (actually I don't know
> how), but I'd like to solve this issue.
>
> I discovered that this error is due to a mistake in /etc/hosts
> configuration file. In fact, as reported in the documentation, I
> should add the line
> 127.0.0.1 hostname
> (http://hbase.apache.org/book.html#os).
>
> But if I add this entry my Hadoop cluster does not start since the
> datanote is bind to the local address instead to the hostname/IP
> address. For this reason in many tutorial it's suggested to remove
> such entry (e.g.
>
> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
> ).
>
> Basically if I add that line Hadoop won't work, but if I keep the file
> without the loopback address I get the above error.
> What can I do? Which is the right configuration?
>
>
> Thanks,
> Alberto
>
>
>
>
> --
> Alberto Cordioli
>
-
Re: Problem with Hadoop and /etc/hosts fileAlberto Cordioli 2012-09-16, 01:04
This is the configuration I used till now...It works, but give the
mentioned error (although the procedure seems to return correct
results anyway.
I think in /etc/hosts should be also the line
127.0.0.1 hostname
but in that case Hadoop does not start.
Alberto
On 14 September 2012 18:19, Shumin Wu <[EMAIL PROTECTED]> wrote:
> Would that work for you?
>
> 127.0.0.1 localhost
> 10.220.55.41 hostname
>
> -Shumin
>
> On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
> [EMAIL PROTECTED]> wrote:
>
>> Hi,
>>
>> I've successfully installed Apache HBase on a cluster with Hadoop.
>> It works fine, but when I try to use Pig to load some data from an
>> HBase table I get this error:
>>
>> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase - Cannot
>> resolve the host name for /10.220.55.41 because of
>> javax.naming.OperationNotSupportedException: DNS service refused
>> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
>>
>> Pig returns in any case the correct results (actually I don't know
>> how), but I'd like to solve this issue.
>>
>> I discovered that this error is due to a mistake in /etc/hosts
>> configuration file. In fact, as reported in the documentation, I
>> should add the line
>> 127.0.0.1 hostname
>> (http://hbase.apache.org/book.html#os).
>>
>> But if I add this entry my Hadoop cluster does not start since the
>> datanote is bind to the local address instead to the hostname/IP
>> address. For this reason in many tutorial it's suggested to remove
>> such entry (e.g.
>>
>> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
>> ).
>>
>> Basically if I add that line Hadoop won't work, but if I keep the file
>> without the loopback address I get the above error.
>> What can I do? Which is the right configuration?
>>
>>
>> Thanks,
>> Alberto
>>
>>
>>
>>
>> --
>> Alberto Cordioli
>>
--
Alberto Cordioli
mentioned error (although the procedure seems to return correct
results anyway.
I think in /etc/hosts should be also the line
127.0.0.1 hostname
but in that case Hadoop does not start.
Alberto
On 14 September 2012 18:19, Shumin Wu <[EMAIL PROTECTED]> wrote:
> Would that work for you?
>
> 127.0.0.1 localhost
> 10.220.55.41 hostname
>
> -Shumin
>
> On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
> [EMAIL PROTECTED]> wrote:
>
>> Hi,
>>
>> I've successfully installed Apache HBase on a cluster with Hadoop.
>> It works fine, but when I try to use Pig to load some data from an
>> HBase table I get this error:
>>
>> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase - Cannot
>> resolve the host name for /10.220.55.41 because of
>> javax.naming.OperationNotSupportedException: DNS service refused
>> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
>>
>> Pig returns in any case the correct results (actually I don't know
>> how), but I'd like to solve this issue.
>>
>> I discovered that this error is due to a mistake in /etc/hosts
>> configuration file. In fact, as reported in the documentation, I
>> should add the line
>> 127.0.0.1 hostname
>> (http://hbase.apache.org/book.html#os).
>>
>> But if I add this entry my Hadoop cluster does not start since the
>> datanote is bind to the local address instead to the hostname/IP
>> address. For this reason in many tutorial it's suggested to remove
>> such entry (e.g.
>>
>> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
>> ).
>>
>> Basically if I add that line Hadoop won't work, but if I keep the file
>> without the loopback address I get the above error.
>> What can I do? Which is the right configuration?
>>
>>
>> Thanks,
>> Alberto
>>
>>
>>
>>
>> --
>> Alberto Cordioli
>>
--
Alberto Cordioli
-
Re: Problem with Hadoop and /etc/hosts fileMichel Segel 2012-09-17, 03:08
Just a hunch, w DNS, do you have your rDNS (reverse DNS lookup) set up correctly.
Sent from a remote device. Please excuse any typos...
Mike Segel
On Sep 15, 2012, at 8:04 PM, Alberto Cordioli <[EMAIL PROTECTED]> wrote:
> This is the configuration I used till now...It works, but give the
> mentioned error (although the procedure seems to return correct
> results anyway.
> I think in /etc/hosts should be also the line
> 127.0.0.1 hostname
>
> but in that case Hadoop does not start.
>
> Alberto
>
> On 14 September 2012 18:19, Shumin Wu <[EMAIL PROTECTED]> wrote:
>> Would that work for you?
>>
>> 127.0.0.1 localhost
>> 10.220.55.41 hostname
>>
>> -Shumin
>>
>> On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
>> [EMAIL PROTECTED]> wrote:
>>
>>> Hi,
>>>
>>> I've successfully installed Apache HBase on a cluster with Hadoop.
>>> It works fine, but when I try to use Pig to load some data from an
>>> HBase table I get this error:
>>>
>>> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase - Cannot
>>> resolve the host name for /10.220.55.41 because of
>>> javax.naming.OperationNotSupportedException: DNS service refused
>>> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
>>>
>>> Pig returns in any case the correct results (actually I don't know
>>> how), but I'd like to solve this issue.
>>>
>>> I discovered that this error is due to a mistake in /etc/hosts
>>> configuration file. In fact, as reported in the documentation, I
>>> should add the line
>>> 127.0.0.1 hostname
>>> (http://hbase.apache.org/book.html#os).
>>>
>>> But if I add this entry my Hadoop cluster does not start since the
>>> datanote is bind to the local address instead to the hostname/IP
>>> address. For this reason in many tutorial it's suggested to remove
>>> such entry (e.g.
>>>
>>> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
>>> ).
>>>
>>> Basically if I add that line Hadoop won't work, but if I keep the file
>>> without the loopback address I get the above error.
>>> What can I do? Which is the right configuration?
>>>
>>>
>>> Thanks,
>>> Alberto
>>>
>>>
>>>
>>>
>>> --
>>> Alberto Cordioli
>>>
>
>
>
> --
> Alberto Cordioli
>
Sent from a remote device. Please excuse any typos...
Mike Segel
On Sep 15, 2012, at 8:04 PM, Alberto Cordioli <[EMAIL PROTECTED]> wrote:
> This is the configuration I used till now...It works, but give the
> mentioned error (although the procedure seems to return correct
> results anyway.
> I think in /etc/hosts should be also the line
> 127.0.0.1 hostname
>
> but in that case Hadoop does not start.
>
> Alberto
>
> On 14 September 2012 18:19, Shumin Wu <[EMAIL PROTECTED]> wrote:
>> Would that work for you?
>>
>> 127.0.0.1 localhost
>> 10.220.55.41 hostname
>>
>> -Shumin
>>
>> On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
>> [EMAIL PROTECTED]> wrote:
>>
>>> Hi,
>>>
>>> I've successfully installed Apache HBase on a cluster with Hadoop.
>>> It works fine, but when I try to use Pig to load some data from an
>>> HBase table I get this error:
>>>
>>> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase - Cannot
>>> resolve the host name for /10.220.55.41 because of
>>> javax.naming.OperationNotSupportedException: DNS service refused
>>> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
>>>
>>> Pig returns in any case the correct results (actually I don't know
>>> how), but I'd like to solve this issue.
>>>
>>> I discovered that this error is due to a mistake in /etc/hosts
>>> configuration file. In fact, as reported in the documentation, I
>>> should add the line
>>> 127.0.0.1 hostname
>>> (http://hbase.apache.org/book.html#os).
>>>
>>> But if I add this entry my Hadoop cluster does not start since the
>>> datanote is bind to the local address instead to the hostname/IP
>>> address. For this reason in many tutorial it's suggested to remove
>>> such entry (e.g.
>>>
>>> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
>>> ).
>>>
>>> Basically if I add that line Hadoop won't work, but if I keep the file
>>> without the loopback address I get the above error.
>>> What can I do? Which is the right configuration?
>>>
>>>
>>> Thanks,
>>> Alberto
>>>
>>>
>>>
>>>
>>> --
>>> Alberto Cordioli
>>>
>
>
>
> --
> Alberto Cordioli
>
-
Re: Problem with Hadoop and /etc/hosts fileshashwat shriparv 2012-09-17, 05:47
cnn you send the content of your hostname and hosts file content?
Regards
∞
Shashwat Shriparv
On Mon, Sep 17, 2012 at 11:09 AM, Michel Segel <[EMAIL PROTECTED]>wrote:
> Just a hunch, w DNS, do you have your rDNS (reverse DNS lookup) set up
> correctly.
>
> Sent from a remote device. Please excuse any typos...
>
> Mike Segel
>
> On Sep 15, 2012, at 8:04 PM, Alberto Cordioli <[EMAIL PROTECTED]>
> wrote:
>
> > This is the configuration I used till now...It works, but give the
> > mentioned error (although the procedure seems to return correct
> > results anyway.
> > I think in /etc/hosts should be also the line
> > 127.0.0.1 hostname
> >
> > but in that case Hadoop does not start.
> >
> > Alberto
> >
> > On 14 September 2012 18:19, Shumin Wu <[EMAIL PROTECTED]> wrote:
> >> Would that work for you?
> >>
> >> 127.0.0.1 localhost
> >> 10.220.55.41 hostname
> >>
> >> -Shumin
> >>
> >> On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
> >> [EMAIL PROTECTED]> wrote:
> >>
> >>> Hi,
> >>>
> >>> I've successfully installed Apache HBase on a cluster with Hadoop.
> >>> It works fine, but when I try to use Pig to load some data from an
> >>> HBase table I get this error:
> >>>
> >>> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase - Cannot
> >>> resolve the host name for /10.220.55.41 because of
> >>> javax.naming.OperationNotSupportedException: DNS service refused
> >>> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
> >>>
> >>> Pig returns in any case the correct results (actually I don't know
> >>> how), but I'd like to solve this issue.
> >>>
> >>> I discovered that this error is due to a mistake in /etc/hosts
> >>> configuration file. In fact, as reported in the documentation, I
> >>> should add the line
> >>> 127.0.0.1 hostname
> >>> (http://hbase.apache.org/book.html#os).
> >>>
> >>> But if I add this entry my Hadoop cluster does not start since the
> >>> datanote is bind to the local address instead to the hostname/IP
> >>> address. For this reason in many tutorial it's suggested to remove
> >>> such entry (e.g.
> >>>
> >>>
> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
> >>> ).
> >>>
> >>> Basically if I add that line Hadoop won't work, but if I keep the file
> >>> without the loopback address I get the above error.
> >>> What can I do? Which is the right configuration?
> >>>
> >>>
> >>> Thanks,
> >>> Alberto
> >>>
> >>>
> >>>
> >>>
> >>> --
> >>> Alberto Cordioli
> >>>
> >
> >
> >
> > --
> > Alberto Cordioli
> >
>
--
∞
Shashwat Shriparv
Regards
∞
Shashwat Shriparv
On Mon, Sep 17, 2012 at 11:09 AM, Michel Segel <[EMAIL PROTECTED]>wrote:
> Just a hunch, w DNS, do you have your rDNS (reverse DNS lookup) set up
> correctly.
>
> Sent from a remote device. Please excuse any typos...
>
> Mike Segel
>
> On Sep 15, 2012, at 8:04 PM, Alberto Cordioli <[EMAIL PROTECTED]>
> wrote:
>
> > This is the configuration I used till now...It works, but give the
> > mentioned error (although the procedure seems to return correct
> > results anyway.
> > I think in /etc/hosts should be also the line
> > 127.0.0.1 hostname
> >
> > but in that case Hadoop does not start.
> >
> > Alberto
> >
> > On 14 September 2012 18:19, Shumin Wu <[EMAIL PROTECTED]> wrote:
> >> Would that work for you?
> >>
> >> 127.0.0.1 localhost
> >> 10.220.55.41 hostname
> >>
> >> -Shumin
> >>
> >> On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
> >> [EMAIL PROTECTED]> wrote:
> >>
> >>> Hi,
> >>>
> >>> I've successfully installed Apache HBase on a cluster with Hadoop.
> >>> It works fine, but when I try to use Pig to load some data from an
> >>> HBase table I get this error:
> >>>
> >>> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase - Cannot
> >>> resolve the host name for /10.220.55.41 because of
> >>> javax.naming.OperationNotSupportedException: DNS service refused
> >>> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
> >>>
> >>> Pig returns in any case the correct results (actually I don't know
> >>> how), but I'd like to solve this issue.
> >>>
> >>> I discovered that this error is due to a mistake in /etc/hosts
> >>> configuration file. In fact, as reported in the documentation, I
> >>> should add the line
> >>> 127.0.0.1 hostname
> >>> (http://hbase.apache.org/book.html#os).
> >>>
> >>> But if I add this entry my Hadoop cluster does not start since the
> >>> datanote is bind to the local address instead to the hostname/IP
> >>> address. For this reason in many tutorial it's suggested to remove
> >>> such entry (e.g.
> >>>
> >>>
> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
> >>> ).
> >>>
> >>> Basically if I add that line Hadoop won't work, but if I keep the file
> >>> without the loopback address I get the above error.
> >>> What can I do? Which is the right configuration?
> >>>
> >>>
> >>> Thanks,
> >>> Alberto
> >>>
> >>>
> >>>
> >>>
> >>> --
> >>> Alberto Cordioli
> >>>
> >
> >
> >
> > --
> > Alberto Cordioli
> >
>
--
∞
Shashwat Shriparv
-
Re: Problem with Hadoop and /etc/hosts fileAlberto Cordioli 2012-09-17, 07:39
How can I set my rDNS?
Anyway this is the /etc/hosts file on my hosts:
127.0.0.1 localhost
10.220.55.41 skil01
10.220.55.42 skil02
10.220.55.40 skil03
The file /etc/hostname contains only a row with the name of the
current host. For example on skil01 it contains:
skil01
Alberto
On 17 September 2012 07:47, shashwat shriparv <[EMAIL PROTECTED]> wrote:
> cnn you send the content of your hostname and hosts file content?
>
> Regards
>
> ∞
> Shashwat Shriparv
>
>
>
> On Mon, Sep 17, 2012 at 11:09 AM, Michel Segel <[EMAIL PROTECTED]>wrote:
>
>> Just a hunch, w DNS, do you have your rDNS (reverse DNS lookup) set up
>> correctly.
>>
>> Sent from a remote device. Please excuse any typos...
>>
>> Mike Segel
>>
>> On Sep 15, 2012, at 8:04 PM, Alberto Cordioli <[EMAIL PROTECTED]>
>> wrote:
>>
>> > This is the configuration I used till now...It works, but give the
>> > mentioned error (although the procedure seems to return correct
>> > results anyway.
>> > I think in /etc/hosts should be also the line
>> > 127.0.0.1 hostname
>> >
>> > but in that case Hadoop does not start.
>> >
>> > Alberto
>> >
>> > On 14 September 2012 18:19, Shumin Wu <[EMAIL PROTECTED]> wrote:
>> >> Would that work for you?
>> >>
>> >> 127.0.0.1 localhost
>> >> 10.220.55.41 hostname
>> >>
>> >> -Shumin
>> >>
>> >> On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
>> >> [EMAIL PROTECTED]> wrote:
>> >>
>> >>> Hi,
>> >>>
>> >>> I've successfully installed Apache HBase on a cluster with Hadoop.
>> >>> It works fine, but when I try to use Pig to load some data from an
>> >>> HBase table I get this error:
>> >>>
>> >>> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase - Cannot
>> >>> resolve the host name for /10.220.55.41 because of
>> >>> javax.naming.OperationNotSupportedException: DNS service refused
>> >>> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
>> >>>
>> >>> Pig returns in any case the correct results (actually I don't know
>> >>> how), but I'd like to solve this issue.
>> >>>
>> >>> I discovered that this error is due to a mistake in /etc/hosts
>> >>> configuration file. In fact, as reported in the documentation, I
>> >>> should add the line
>> >>> 127.0.0.1 hostname
>> >>> (http://hbase.apache.org/book.html#os).
>> >>>
>> >>> But if I add this entry my Hadoop cluster does not start since the
>> >>> datanote is bind to the local address instead to the hostname/IP
>> >>> address. For this reason in many tutorial it's suggested to remove
>> >>> such entry (e.g.
>> >>>
>> >>>
>> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
>> >>> ).
>> >>>
>> >>> Basically if I add that line Hadoop won't work, but if I keep the file
>> >>> without the loopback address I get the above error.
>> >>> What can I do? Which is the right configuration?
>> >>>
>> >>>
>> >>> Thanks,
>> >>> Alberto
>> >>>
>> >>>
>> >>>
>> >>>
>> >>> --
>> >>> Alberto Cordioli
>> >>>
>> >
>> >
>> >
>> > --
>> > Alberto Cordioli
>> >
>>
>
>
>
> --
>
>
> ∞
> Shashwat Shriparv
--
Alberto Cordioli
Anyway this is the /etc/hosts file on my hosts:
127.0.0.1 localhost
10.220.55.41 skil01
10.220.55.42 skil02
10.220.55.40 skil03
The file /etc/hostname contains only a row with the name of the
current host. For example on skil01 it contains:
skil01
Alberto
On 17 September 2012 07:47, shashwat shriparv <[EMAIL PROTECTED]> wrote:
> cnn you send the content of your hostname and hosts file content?
>
> Regards
>
> ∞
> Shashwat Shriparv
>
>
>
> On Mon, Sep 17, 2012 at 11:09 AM, Michel Segel <[EMAIL PROTECTED]>wrote:
>
>> Just a hunch, w DNS, do you have your rDNS (reverse DNS lookup) set up
>> correctly.
>>
>> Sent from a remote device. Please excuse any typos...
>>
>> Mike Segel
>>
>> On Sep 15, 2012, at 8:04 PM, Alberto Cordioli <[EMAIL PROTECTED]>
>> wrote:
>>
>> > This is the configuration I used till now...It works, but give the
>> > mentioned error (although the procedure seems to return correct
>> > results anyway.
>> > I think in /etc/hosts should be also the line
>> > 127.0.0.1 hostname
>> >
>> > but in that case Hadoop does not start.
>> >
>> > Alberto
>> >
>> > On 14 September 2012 18:19, Shumin Wu <[EMAIL PROTECTED]> wrote:
>> >> Would that work for you?
>> >>
>> >> 127.0.0.1 localhost
>> >> 10.220.55.41 hostname
>> >>
>> >> -Shumin
>> >>
>> >> On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
>> >> [EMAIL PROTECTED]> wrote:
>> >>
>> >>> Hi,
>> >>>
>> >>> I've successfully installed Apache HBase on a cluster with Hadoop.
>> >>> It works fine, but when I try to use Pig to load some data from an
>> >>> HBase table I get this error:
>> >>>
>> >>> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase - Cannot
>> >>> resolve the host name for /10.220.55.41 because of
>> >>> javax.naming.OperationNotSupportedException: DNS service refused
>> >>> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
>> >>>
>> >>> Pig returns in any case the correct results (actually I don't know
>> >>> how), but I'd like to solve this issue.
>> >>>
>> >>> I discovered that this error is due to a mistake in /etc/hosts
>> >>> configuration file. In fact, as reported in the documentation, I
>> >>> should add the line
>> >>> 127.0.0.1 hostname
>> >>> (http://hbase.apache.org/book.html#os).
>> >>>
>> >>> But if I add this entry my Hadoop cluster does not start since the
>> >>> datanote is bind to the local address instead to the hostname/IP
>> >>> address. For this reason in many tutorial it's suggested to remove
>> >>> such entry (e.g.
>> >>>
>> >>>
>> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
>> >>> ).
>> >>>
>> >>> Basically if I add that line Hadoop won't work, but if I keep the file
>> >>> without the loopback address I get the above error.
>> >>> What can I do? Which is the right configuration?
>> >>>
>> >>>
>> >>> Thanks,
>> >>> Alberto
>> >>>
>> >>>
>> >>>
>> >>>
>> >>> --
>> >>> Alberto Cordioli
>> >>>
>> >
>> >
>> >
>> > --
>> > Alberto Cordioli
>> >
>>
>
>
>
> --
>
>
> ∞
> Shashwat Shriparv
--
Alberto Cordioli
-
Re: Problem with Hadoop and /etc/hosts fileshashwat shriparv 2012-09-17, 09:54
make sure that same content is there on different machines in your cluster
copy this
127.0.0.1 localhost
10.220.55.41 skil01
10.220.55.42 skil02
10.220.55.40 skil03
and paste it in machine skill01 skill02 skill03 and then try. and also
check if these ips are correct.
Regards
∞
Shashwat Shriparv
On Mon, Sep 17, 2012 at 1:09 PM, Alberto Cordioli <
[EMAIL PROTECTED]> wrote:
> How can I set my rDNS?
> Anyway this is the /etc/hosts file on my hosts:
>
> 127.0.0.1 localhost
> 10.220.55.41 skil01
> 10.220.55.42 skil02
> 10.220.55.40 skil03
>
> The file /etc/hostname contains only a row with the name of the
> current host. For example on skil01 it contains:
> skil01
>
>
> Alberto
>
>
>
> On 17 September 2012 07:47, shashwat shriparv <[EMAIL PROTECTED]>
> wrote:
> > cnn you send the content of your hostname and hosts file content?
> >
> > Regards
> >
> > ∞
> > Shashwat Shriparv
> >
> >
> >
> > On Mon, Sep 17, 2012 at 11:09 AM, Michel Segel <
> [EMAIL PROTECTED]>wrote:
> >
> >> Just a hunch, w DNS, do you have your rDNS (reverse DNS lookup) set up
> >> correctly.
> >>
> >> Sent from a remote device. Please excuse any typos...
> >>
> >> Mike Segel
> >>
> >> On Sep 15, 2012, at 8:04 PM, Alberto Cordioli <
> [EMAIL PROTECTED]>
> >> wrote:
> >>
> >> > This is the configuration I used till now...It works, but give the
> >> > mentioned error (although the procedure seems to return correct
> >> > results anyway.
> >> > I think in /etc/hosts should be also the line
> >> > 127.0.0.1 hostname
> >> >
> >> > but in that case Hadoop does not start.
> >> >
> >> > Alberto
> >> >
> >> > On 14 September 2012 18:19, Shumin Wu <[EMAIL PROTECTED]> wrote:
> >> >> Would that work for you?
> >> >>
> >> >> 127.0.0.1 localhost
> >> >> 10.220.55.41 hostname
> >> >>
> >> >> -Shumin
> >> >>
> >> >> On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
> >> >> [EMAIL PROTECTED]> wrote:
> >> >>
> >> >>> Hi,
> >> >>>
> >> >>> I've successfully installed Apache HBase on a cluster with Hadoop.
> >> >>> It works fine, but when I try to use Pig to load some data from an
> >> >>> HBase table I get this error:
> >> >>>
> >> >>> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase -
> Cannot
> >> >>> resolve the host name for /10.220.55.41 because of
> >> >>> javax.naming.OperationNotSupportedException: DNS service refused
> >> >>> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
> >> >>>
> >> >>> Pig returns in any case the correct results (actually I don't know
> >> >>> how), but I'd like to solve this issue.
> >> >>>
> >> >>> I discovered that this error is due to a mistake in /etc/hosts
> >> >>> configuration file. In fact, as reported in the documentation, I
> >> >>> should add the line
> >> >>> 127.0.0.1 hostname
> >> >>> (http://hbase.apache.org/book.html#os).
> >> >>>
> >> >>> But if I add this entry my Hadoop cluster does not start since the
> >> >>> datanote is bind to the local address instead to the hostname/IP
> >> >>> address. For this reason in many tutorial it's suggested to remove
> >> >>> such entry (e.g.
> >> >>>
> >> >>>
> >>
> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
> >> >>> ).
> >> >>>
> >> >>> Basically if I add that line Hadoop won't work, but if I keep the
> file
> >> >>> without the loopback address I get the above error.
> >> >>> What can I do? Which is the right configuration?
> >> >>>
> >> >>>
> >> >>> Thanks,
> >> >>> Alberto
> >> >>>
> >> >>>
> >> >>>
> >> >>>
> >> >>> --
> >> >>> Alberto Cordioli
> >> >>>
> >> >
> >> >
> >> >
> >> > --
> >> > Alberto Cordioli
> >> >
> >>
> >
> >
> >
> > --
> >
> >
> > ∞
> > Shashwat Shriparv
>
>
>
> --
> Alberto Cordioli
>
--
∞
Shashwat Shriparv
copy this
127.0.0.1 localhost
10.220.55.41 skil01
10.220.55.42 skil02
10.220.55.40 skil03
and paste it in machine skill01 skill02 skill03 and then try. and also
check if these ips are correct.
Regards
∞
Shashwat Shriparv
On Mon, Sep 17, 2012 at 1:09 PM, Alberto Cordioli <
[EMAIL PROTECTED]> wrote:
> How can I set my rDNS?
> Anyway this is the /etc/hosts file on my hosts:
>
> 127.0.0.1 localhost
> 10.220.55.41 skil01
> 10.220.55.42 skil02
> 10.220.55.40 skil03
>
> The file /etc/hostname contains only a row with the name of the
> current host. For example on skil01 it contains:
> skil01
>
>
> Alberto
>
>
>
> On 17 September 2012 07:47, shashwat shriparv <[EMAIL PROTECTED]>
> wrote:
> > cnn you send the content of your hostname and hosts file content?
> >
> > Regards
> >
> > ∞
> > Shashwat Shriparv
> >
> >
> >
> > On Mon, Sep 17, 2012 at 11:09 AM, Michel Segel <
> [EMAIL PROTECTED]>wrote:
> >
> >> Just a hunch, w DNS, do you have your rDNS (reverse DNS lookup) set up
> >> correctly.
> >>
> >> Sent from a remote device. Please excuse any typos...
> >>
> >> Mike Segel
> >>
> >> On Sep 15, 2012, at 8:04 PM, Alberto Cordioli <
> [EMAIL PROTECTED]>
> >> wrote:
> >>
> >> > This is the configuration I used till now...It works, but give the
> >> > mentioned error (although the procedure seems to return correct
> >> > results anyway.
> >> > I think in /etc/hosts should be also the line
> >> > 127.0.0.1 hostname
> >> >
> >> > but in that case Hadoop does not start.
> >> >
> >> > Alberto
> >> >
> >> > On 14 September 2012 18:19, Shumin Wu <[EMAIL PROTECTED]> wrote:
> >> >> Would that work for you?
> >> >>
> >> >> 127.0.0.1 localhost
> >> >> 10.220.55.41 hostname
> >> >>
> >> >> -Shumin
> >> >>
> >> >> On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
> >> >> [EMAIL PROTECTED]> wrote:
> >> >>
> >> >>> Hi,
> >> >>>
> >> >>> I've successfully installed Apache HBase on a cluster with Hadoop.
> >> >>> It works fine, but when I try to use Pig to load some data from an
> >> >>> HBase table I get this error:
> >> >>>
> >> >>> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase -
> Cannot
> >> >>> resolve the host name for /10.220.55.41 because of
> >> >>> javax.naming.OperationNotSupportedException: DNS service refused
> >> >>> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
> >> >>>
> >> >>> Pig returns in any case the correct results (actually I don't know
> >> >>> how), but I'd like to solve this issue.
> >> >>>
> >> >>> I discovered that this error is due to a mistake in /etc/hosts
> >> >>> configuration file. In fact, as reported in the documentation, I
> >> >>> should add the line
> >> >>> 127.0.0.1 hostname
> >> >>> (http://hbase.apache.org/book.html#os).
> >> >>>
> >> >>> But if I add this entry my Hadoop cluster does not start since the
> >> >>> datanote is bind to the local address instead to the hostname/IP
> >> >>> address. For this reason in many tutorial it's suggested to remove
> >> >>> such entry (e.g.
> >> >>>
> >> >>>
> >>
> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
> >> >>> ).
> >> >>>
> >> >>> Basically if I add that line Hadoop won't work, but if I keep the
> file
> >> >>> without the loopback address I get the above error.
> >> >>> What can I do? Which is the right configuration?
> >> >>>
> >> >>>
> >> >>> Thanks,
> >> >>> Alberto
> >> >>>
> >> >>>
> >> >>>
> >> >>>
> >> >>> --
> >> >>> Alberto Cordioli
> >> >>>
> >> >
> >> >
> >> >
> >> > --
> >> > Alberto Cordioli
> >> >
> >>
> >
> >
> >
> > --
> >
> >
> > ∞
> > Shashwat Shriparv
>
>
>
> --
> Alberto Cordioli
>
--
∞
Shashwat Shriparv
-
Re: Problem with Hadoop and /etc/hosts fileAlberto Cordioli 2012-09-17, 10:09
I already did this, but the problem still there.
When I try this command:
host 10.220.55.41
I get:
Host 41.55.220.10.in-addr.arpa. not found: 3(NXDOMAIN)
The same for each host. Is this normal?
Alberto
On 17 September 2012 11:54, shashwat shriparv <[EMAIL PROTECTED]> wrote:
> make sure that same content is there on different machines in your cluster
> copy this
>
> 127.0.0.1 localhost
> 10.220.55.41 skil01
> 10.220.55.42 skil02
> 10.220.55.40 skil03
>
> and paste it in machine skill01 skill02 skill03 and then try. and also
> check if these ips are correct.
>
> Regards
>
> ∞
> Shashwat Shriparv
>
>
>
> On Mon, Sep 17, 2012 at 1:09 PM, Alberto Cordioli <
> [EMAIL PROTECTED]> wrote:
>
>> How can I set my rDNS?
>> Anyway this is the /etc/hosts file on my hosts:
>>
>> 127.0.0.1 localhost
>> 10.220.55.41 skil01
>> 10.220.55.42 skil02
>> 10.220.55.40 skil03
>>
>> The file /etc/hostname contains only a row with the name of the
>> current host. For example on skil01 it contains:
>> skil01
>>
>>
>> Alberto
>>
>>
>>
>> On 17 September 2012 07:47, shashwat shriparv <[EMAIL PROTECTED]>
>> wrote:
>> > cnn you send the content of your hostname and hosts file content?
>> >
>> > Regards
>> >
>> > ∞
>> > Shashwat Shriparv
>> >
>> >
>> >
>> > On Mon, Sep 17, 2012 at 11:09 AM, Michel Segel <
>> [EMAIL PROTECTED]>wrote:
>> >
>> >> Just a hunch, w DNS, do you have your rDNS (reverse DNS lookup) set up
>> >> correctly.
>> >>
>> >> Sent from a remote device. Please excuse any typos...
>> >>
>> >> Mike Segel
>> >>
>> >> On Sep 15, 2012, at 8:04 PM, Alberto Cordioli <
>> [EMAIL PROTECTED]>
>> >> wrote:
>> >>
>> >> > This is the configuration I used till now...It works, but give the
>> >> > mentioned error (although the procedure seems to return correct
>> >> > results anyway.
>> >> > I think in /etc/hosts should be also the line
>> >> > 127.0.0.1 hostname
>> >> >
>> >> > but in that case Hadoop does not start.
>> >> >
>> >> > Alberto
>> >> >
>> >> > On 14 September 2012 18:19, Shumin Wu <[EMAIL PROTECTED]> wrote:
>> >> >> Would that work for you?
>> >> >>
>> >> >> 127.0.0.1 localhost
>> >> >> 10.220.55.41 hostname
>> >> >>
>> >> >> -Shumin
>> >> >>
>> >> >> On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
>> >> >> [EMAIL PROTECTED]> wrote:
>> >> >>
>> >> >>> Hi,
>> >> >>>
>> >> >>> I've successfully installed Apache HBase on a cluster with Hadoop.
>> >> >>> It works fine, but when I try to use Pig to load some data from an
>> >> >>> HBase table I get this error:
>> >> >>>
>> >> >>> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase -
>> Cannot
>> >> >>> resolve the host name for /10.220.55.41 because of
>> >> >>> javax.naming.OperationNotSupportedException: DNS service refused
>> >> >>> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
>> >> >>>
>> >> >>> Pig returns in any case the correct results (actually I don't know
>> >> >>> how), but I'd like to solve this issue.
>> >> >>>
>> >> >>> I discovered that this error is due to a mistake in /etc/hosts
>> >> >>> configuration file. In fact, as reported in the documentation, I
>> >> >>> should add the line
>> >> >>> 127.0.0.1 hostname
>> >> >>> (http://hbase.apache.org/book.html#os).
>> >> >>>
>> >> >>> But if I add this entry my Hadoop cluster does not start since the
>> >> >>> datanote is bind to the local address instead to the hostname/IP
>> >> >>> address. For this reason in many tutorial it's suggested to remove
>> >> >>> such entry (e.g.
>> >> >>>
>> >> >>>
>> >>
>> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
>> >> >>> ).
>> >> >>>
>> >> >>> Basically if I add that line Hadoop won't work, but if I keep the
>> file
>> >> >>> without the loopback address I get the above error.
>> >> >>> What can I do? Which is the right configuration?
>> >> >>>
>> >> >>>
>> >> >>> Thanks,
>> >> >>> Alberto
>> >> >>>
>> >> >>>
>> >> >>>
>> >> >>>
Alberto Cordioli
When I try this command:
host 10.220.55.41
I get:
Host 41.55.220.10.in-addr.arpa. not found: 3(NXDOMAIN)
The same for each host. Is this normal?
Alberto
On 17 September 2012 11:54, shashwat shriparv <[EMAIL PROTECTED]> wrote:
> make sure that same content is there on different machines in your cluster
> copy this
>
> 127.0.0.1 localhost
> 10.220.55.41 skil01
> 10.220.55.42 skil02
> 10.220.55.40 skil03
>
> and paste it in machine skill01 skill02 skill03 and then try. and also
> check if these ips are correct.
>
> Regards
>
> ∞
> Shashwat Shriparv
>
>
>
> On Mon, Sep 17, 2012 at 1:09 PM, Alberto Cordioli <
> [EMAIL PROTECTED]> wrote:
>
>> How can I set my rDNS?
>> Anyway this is the /etc/hosts file on my hosts:
>>
>> 127.0.0.1 localhost
>> 10.220.55.41 skil01
>> 10.220.55.42 skil02
>> 10.220.55.40 skil03
>>
>> The file /etc/hostname contains only a row with the name of the
>> current host. For example on skil01 it contains:
>> skil01
>>
>>
>> Alberto
>>
>>
>>
>> On 17 September 2012 07:47, shashwat shriparv <[EMAIL PROTECTED]>
>> wrote:
>> > cnn you send the content of your hostname and hosts file content?
>> >
>> > Regards
>> >
>> > ∞
>> > Shashwat Shriparv
>> >
>> >
>> >
>> > On Mon, Sep 17, 2012 at 11:09 AM, Michel Segel <
>> [EMAIL PROTECTED]>wrote:
>> >
>> >> Just a hunch, w DNS, do you have your rDNS (reverse DNS lookup) set up
>> >> correctly.
>> >>
>> >> Sent from a remote device. Please excuse any typos...
>> >>
>> >> Mike Segel
>> >>
>> >> On Sep 15, 2012, at 8:04 PM, Alberto Cordioli <
>> [EMAIL PROTECTED]>
>> >> wrote:
>> >>
>> >> > This is the configuration I used till now...It works, but give the
>> >> > mentioned error (although the procedure seems to return correct
>> >> > results anyway.
>> >> > I think in /etc/hosts should be also the line
>> >> > 127.0.0.1 hostname
>> >> >
>> >> > but in that case Hadoop does not start.
>> >> >
>> >> > Alberto
>> >> >
>> >> > On 14 September 2012 18:19, Shumin Wu <[EMAIL PROTECTED]> wrote:
>> >> >> Would that work for you?
>> >> >>
>> >> >> 127.0.0.1 localhost
>> >> >> 10.220.55.41 hostname
>> >> >>
>> >> >> -Shumin
>> >> >>
>> >> >> On Fri, Sep 14, 2012 at 6:18 AM, Alberto Cordioli <
>> >> >> [EMAIL PROTECTED]> wrote:
>> >> >>
>> >> >>> Hi,
>> >> >>>
>> >> >>> I've successfully installed Apache HBase on a cluster with Hadoop.
>> >> >>> It works fine, but when I try to use Pig to load some data from an
>> >> >>> HBase table I get this error:
>> >> >>>
>> >> >>> ERROR org.apache.hadoop.hbase.mapreduce.TableInputFormatBase -
>> Cannot
>> >> >>> resolve the host name for /10.220.55.41 because of
>> >> >>> javax.naming.OperationNotSupportedException: DNS service refused
>> >> >>> [response code 5]; remaining name '41.55.220.10.in-addr.arpa'
>> >> >>>
>> >> >>> Pig returns in any case the correct results (actually I don't know
>> >> >>> how), but I'd like to solve this issue.
>> >> >>>
>> >> >>> I discovered that this error is due to a mistake in /etc/hosts
>> >> >>> configuration file. In fact, as reported in the documentation, I
>> >> >>> should add the line
>> >> >>> 127.0.0.1 hostname
>> >> >>> (http://hbase.apache.org/book.html#os).
>> >> >>>
>> >> >>> But if I add this entry my Hadoop cluster does not start since the
>> >> >>> datanote is bind to the local address instead to the hostname/IP
>> >> >>> address. For this reason in many tutorial it's suggested to remove
>> >> >>> such entry (e.g.
>> >> >>>
>> >> >>>
>> >>
>> http://stackoverflow.com/questions/8872807/hadoop-datanodes-cannot-find-namenode
>> >> >>> ).
>> >> >>>
>> >> >>> Basically if I add that line Hadoop won't work, but if I keep the
>> file
>> >> >>> without the loopback address I get the above error.
>> >> >>> What can I do? Which is the right configuration?
>> >> >>>
>> >> >>>
>> >> >>> Thanks,
>> >> >>> Alberto
>> >> >>>
>> >> >>>
>> >> >>>
>> >> >>>
Alberto Cordioli
-
Re: Problem with Hadoop and /etc/hosts fileStack 2012-09-17, 16:17
On Mon, Sep 17, 2012 at 3:09 AM, Alberto Cordioli
<[EMAIL PROTECTED]> wrote:
> I already did this, but the problem still there.
> When I try this command:
>
> host 10.220.55.41
>
> I get:
>
> Host 41.55.220.10.in-addr.arpa. not found: 3(NXDOMAIN)
>
> The same for each host. Is this normal?
>
The above question is out of scope for this forum. You are asking how
to set up your networking/name resolve. There are better forums and
info sources than this for these types of questions. Get your resolve
fix, then come back if your hbase is still not working.
St.Ack
<[EMAIL PROTECTED]> wrote:
> I already did this, but the problem still there.
> When I try this command:
>
> host 10.220.55.41
>
> I get:
>
> Host 41.55.220.10.in-addr.arpa. not found: 3(NXDOMAIN)
>
> The same for each host. Is this normal?
>
The above question is out of scope for this forum. You are asking how
to set up your networking/name resolve. There are better forums and
info sources than this for these types of questions. Get your resolve
fix, then come back if your hbase is still not working.
St.Ack
