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Posted to mapreduce-user@hadoop.apache.org by Bruno Andrade <bm...@eurotux.com> on 2014/01/20 13:11:35 UTC

Hadoop 2 Namenode HA not working properly

Hey,

I have configured a Hadoop v2.2.0 cluster with QJM and Zookeeper for HA 
and automatic failover.
But I'm having a problem. If I test the automatic failover, by killing 
one of the namenodes, nothing happens. But if I kill the zkfc of that 
namenode, then zookeeper elects the other namenode as active.

What can it be the problem?

Thanks.

-- 
Bruno Andrade <bm...@eurotux.com>
Programador (I&D)
Eurotux Informática, S.A. | www.eurotux.com
(t) +351 253 680 300 (m) +351 936 293 858

Re: Hadoop 2 Namenode HA not working properly

Posted by Bruno Andrade <bm...@eurotux.com>.

Hey,

this is my hdfs-site.xml -> http://pastebin.com/qpELkwH8
this is my core-site.xml:

<configuration>
     <property>
         <name>fs.defaultFS</name>
         <value>hdfs://blabla-hadoop</value>
     </property>

     <property>
         <name>hadoop.tmp.dir</name>
         <value>/opt/hadoop/hadoop/tmp</value>
     </property>
</configuration>

I kill only the namenode process and nothing happen, then I killed zkfc 
process and the transition happend, the second namenode become active.

Thanks.



On 01/20/2014 06:44 PM, Jing Zhao wrote:
> Hi Bruno,
>
>      Could you post your configuration? Also, when you killed one of
> the NN, you mean only killing the NN process or you shutdown the whole
> machine?
>
> Thanks,
> -Jing
>
> On Mon, Jan 20, 2014 at 4:11 AM, Bruno Andrade <bm...@eurotux.com> wrote:
>> Hey,
>>
>> I have configured a Hadoop v2.2.0 cluster with QJM and Zookeeper for HA and
>> automatic failover.
>> But I'm having a problem. If I test the automatic failover, by killing one
>> of the namenodes, nothing happens. But if I kill the zkfc of that namenode,
>> then zookeeper elects the other namenode as active.
>>
>> What can it be the problem?
>>
>> Thanks.
>>
>> --
>> Bruno Andrade <bm...@eurotux.com>
>> Programador (I&D)
>> Eurotux Informática, S.A. | www.eurotux.com
>> (t) +351 253 680 300 (m) +351 936 293 858

-- 
Bruno Andrade <bm...@eurotux.com>
Programador (I&D)
Eurotux Informática, S.A. | www.eurotux.com
(t) +351 253 680 300 (m) +351 936 293 858

Re: Hadoop 2 Namenode HA not working properly

Posted by Bruno Andrade <bm...@eurotux.com>.

Hey,

this is my hdfs-site.xml -> http://pastebin.com/qpELkwH8
this is my core-site.xml:

<configuration>
     <property>
         <name>fs.defaultFS</name>
         <value>hdfs://blabla-hadoop</value>
     </property>

     <property>
         <name>hadoop.tmp.dir</name>
         <value>/opt/hadoop/hadoop/tmp</value>
     </property>
</configuration>

I kill only the namenode process and nothing happen, then I killed zkfc 
process and the transition happend, the second namenode become active.

Thanks.



On 01/20/2014 06:44 PM, Jing Zhao wrote:
> Hi Bruno,
>
>      Could you post your configuration? Also, when you killed one of
> the NN, you mean only killing the NN process or you shutdown the whole
> machine?
>
> Thanks,
> -Jing
>
> On Mon, Jan 20, 2014 at 4:11 AM, Bruno Andrade <bm...@eurotux.com> wrote:
>> Hey,
>>
>> I have configured a Hadoop v2.2.0 cluster with QJM and Zookeeper for HA and
>> automatic failover.
>> But I'm having a problem. If I test the automatic failover, by killing one
>> of the namenodes, nothing happens. But if I kill the zkfc of that namenode,
>> then zookeeper elects the other namenode as active.
>>
>> What can it be the problem?
>>
>> Thanks.
>>
>> --
>> Bruno Andrade <bm...@eurotux.com>
>> Programador (I&D)
>> Eurotux Informática, S.A. | www.eurotux.com
>> (t) +351 253 680 300 (m) +351 936 293 858

-- 
Bruno Andrade <bm...@eurotux.com>
Programador (I&D)
Eurotux Informática, S.A. | www.eurotux.com
(t) +351 253 680 300 (m) +351 936 293 858

Re: Hadoop 2 Namenode HA not working properly

Posted by Bruno Andrade <bm...@eurotux.com>.

Hey,

this is my hdfs-site.xml -> http://pastebin.com/qpELkwH8
this is my core-site.xml:

<configuration>
     <property>
         <name>fs.defaultFS</name>
         <value>hdfs://blabla-hadoop</value>
     </property>

     <property>
         <name>hadoop.tmp.dir</name>
         <value>/opt/hadoop/hadoop/tmp</value>
     </property>
</configuration>

I kill only the namenode process and nothing happen, then I killed zkfc 
process and the transition happend, the second namenode become active.

Thanks.



On 01/20/2014 06:44 PM, Jing Zhao wrote:
> Hi Bruno,
>
>      Could you post your configuration? Also, when you killed one of
> the NN, you mean only killing the NN process or you shutdown the whole
> machine?
>
> Thanks,
> -Jing
>
> On Mon, Jan 20, 2014 at 4:11 AM, Bruno Andrade <bm...@eurotux.com> wrote:
>> Hey,
>>
>> I have configured a Hadoop v2.2.0 cluster with QJM and Zookeeper for HA and
>> automatic failover.
>> But I'm having a problem. If I test the automatic failover, by killing one
>> of the namenodes, nothing happens. But if I kill the zkfc of that namenode,
>> then zookeeper elects the other namenode as active.
>>
>> What can it be the problem?
>>
>> Thanks.
>>
>> --
>> Bruno Andrade <bm...@eurotux.com>
>> Programador (I&D)
>> Eurotux Informática, S.A. | www.eurotux.com
>> (t) +351 253 680 300 (m) +351 936 293 858

-- 
Bruno Andrade <bm...@eurotux.com>
Programador (I&D)
Eurotux Informática, S.A. | www.eurotux.com
(t) +351 253 680 300 (m) +351 936 293 858

Re: Hadoop 2 Namenode HA not working properly

Posted by Bruno Andrade <bm...@eurotux.com>.

Hey,

this is my hdfs-site.xml -> http://pastebin.com/qpELkwH8
this is my core-site.xml:

<configuration>
     <property>
         <name>fs.defaultFS</name>
         <value>hdfs://blabla-hadoop</value>
     </property>

     <property>
         <name>hadoop.tmp.dir</name>
         <value>/opt/hadoop/hadoop/tmp</value>
     </property>
</configuration>

I kill only the namenode process and nothing happen, then I killed zkfc 
process and the transition happend, the second namenode become active.

Thanks.



On 01/20/2014 06:44 PM, Jing Zhao wrote:
> Hi Bruno,
>
>      Could you post your configuration? Also, when you killed one of
> the NN, you mean only killing the NN process or you shutdown the whole
> machine?
>
> Thanks,
> -Jing
>
> On Mon, Jan 20, 2014 at 4:11 AM, Bruno Andrade <bm...@eurotux.com> wrote:
>> Hey,
>>
>> I have configured a Hadoop v2.2.0 cluster with QJM and Zookeeper for HA and
>> automatic failover.
>> But I'm having a problem. If I test the automatic failover, by killing one
>> of the namenodes, nothing happens. But if I kill the zkfc of that namenode,
>> then zookeeper elects the other namenode as active.
>>
>> What can it be the problem?
>>
>> Thanks.
>>
>> --
>> Bruno Andrade <bm...@eurotux.com>
>> Programador (I&D)
>> Eurotux Informática, S.A. | www.eurotux.com
>> (t) +351 253 680 300 (m) +351 936 293 858

-- 
Bruno Andrade <bm...@eurotux.com>
Programador (I&D)
Eurotux Informática, S.A. | www.eurotux.com
(t) +351 253 680 300 (m) +351 936 293 858

Re: Hadoop 2 Namenode HA not working properly

Posted by Jing Zhao <ji...@hortonworks.com>.

Hi Bruno,

    Could you post your configuration? Also, when you killed one of
the NN, you mean only killing the NN process or you shutdown the whole
machine?

Thanks,
-Jing

On Mon, Jan 20, 2014 at 4:11 AM, Bruno Andrade <bm...@eurotux.com> wrote:
> Hey,
>
> I have configured a Hadoop v2.2.0 cluster with QJM and Zookeeper for HA and
> automatic failover.
> But I'm having a problem. If I test the automatic failover, by killing one
> of the namenodes, nothing happens. But if I kill the zkfc of that namenode,
> then zookeeper elects the other namenode as active.
>
> What can it be the problem?
>
> Thanks.
>
> --
> Bruno Andrade <bm...@eurotux.com>
> Programador (I&D)
> Eurotux Informática, S.A. | www.eurotux.com
> (t) +351 253 680 300 (m) +351 936 293 858

-- 
CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to 
which it is addressed and may contain information that is confidential, 
privileged and exempt from disclosure under applicable law. If the reader 
of this message is not the intended recipient, you are hereby notified that 
any printing, copying, dissemination, distribution, disclosure or 
forwarding of this communication is strictly prohibited. If you have 
received this communication in error, please contact the sender immediately 
and delete it from your system. Thank You.

Re: Hadoop 2 Namenode HA not working properly

Posted by Jing Zhao <ji...@hortonworks.com>.

Hi Bruno,

    Could you post your configuration? Also, when you killed one of
the NN, you mean only killing the NN process or you shutdown the whole
machine?

Thanks,
-Jing

On Mon, Jan 20, 2014 at 4:11 AM, Bruno Andrade <bm...@eurotux.com> wrote:
> Hey,
>
> I have configured a Hadoop v2.2.0 cluster with QJM and Zookeeper for HA and
> automatic failover.
> But I'm having a problem. If I test the automatic failover, by killing one
> of the namenodes, nothing happens. But if I kill the zkfc of that namenode,
> then zookeeper elects the other namenode as active.
>
> What can it be the problem?
>
> Thanks.
>
> --
> Bruno Andrade <bm...@eurotux.com>
> Programador (I&D)
> Eurotux Informática, S.A. | www.eurotux.com
> (t) +351 253 680 300 (m) +351 936 293 858

-- 
CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to 
which it is addressed and may contain information that is confidential, 
privileged and exempt from disclosure under applicable law. If the reader 
of this message is not the intended recipient, you are hereby notified that 
any printing, copying, dissemination, distribution, disclosure or 
forwarding of this communication is strictly prohibited. If you have 
received this communication in error, please contact the sender immediately 
and delete it from your system. Thank You.

Re: Hadoop 2 Namenode HA not working properly

Posted by Jing Zhao <ji...@hortonworks.com>.

Hi Bruno,

    Could you post your configuration? Also, when you killed one of
the NN, you mean only killing the NN process or you shutdown the whole
machine?

Thanks,
-Jing

On Mon, Jan 20, 2014 at 4:11 AM, Bruno Andrade <bm...@eurotux.com> wrote:
> Hey,
>
> I have configured a Hadoop v2.2.0 cluster with QJM and Zookeeper for HA and
> automatic failover.
> But I'm having a problem. If I test the automatic failover, by killing one
> of the namenodes, nothing happens. But if I kill the zkfc of that namenode,
> then zookeeper elects the other namenode as active.
>
> What can it be the problem?
>
> Thanks.
>
> --
> Bruno Andrade <bm...@eurotux.com>
> Programador (I&D)
> Eurotux Informática, S.A. | www.eurotux.com
> (t) +351 253 680 300 (m) +351 936 293 858

-- 
CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to 
which it is addressed and may contain information that is confidential, 
privileged and exempt from disclosure under applicable law. If the reader 
of this message is not the intended recipient, you are hereby notified that 
any printing, copying, dissemination, distribution, disclosure or 
forwarding of this communication is strictly prohibited. If you have 
received this communication in error, please contact the sender immediately 
and delete it from your system. Thank You.

Re: Hadoop 2 Namenode HA not working properly

Posted by Jing Zhao <ji...@hortonworks.com>.

Hi Bruno,

    Could you post your configuration? Also, when you killed one of
the NN, you mean only killing the NN process or you shutdown the whole
machine?

Thanks,
-Jing

On Mon, Jan 20, 2014 at 4:11 AM, Bruno Andrade <bm...@eurotux.com> wrote:
> Hey,
>
> I have configured a Hadoop v2.2.0 cluster with QJM and Zookeeper for HA and
> automatic failover.
> But I'm having a problem. If I test the automatic failover, by killing one
> of the namenodes, nothing happens. But if I kill the zkfc of that namenode,
> then zookeeper elects the other namenode as active.
>
> What can it be the problem?
>
> Thanks.
>
> --
> Bruno Andrade <bm...@eurotux.com>
> Programador (I&D)
> Eurotux Informática, S.A. | www.eurotux.com
> (t) +351 253 680 300 (m) +351 936 293 858

-- 
CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to 
which it is addressed and may contain information that is confidential, 
privileged and exempt from disclosure under applicable law. If the reader 
of this message is not the intended recipient, you are hereby notified that 
any printing, copying, dissemination, distribution, disclosure or 
forwarding of this communication is strictly prohibited. If you have 
received this communication in error, please contact the sender immediately 
and delete it from your system. Thank You.