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Posted to user@zookeeper.apache.org by Jorge Fonseca <jc...@gmail.com> on 2016/01/06 14:50:11 UTC
Zookeeper without JMX ?
Hi All,
Have a nice new year :)
A simple and direct question.
Is it possible to port zookeeper to a platform that does not have JMX
technology? Or Zookeeper is fully-dependent of this technology?
Best regards !
Jorge.
Re: Zookeeper without JMX ?
Posted by Jorge Fonseca <jc...@gmail.com>.
Thanks Chris.
You are correct - android does not support JMX packages.
The main idea is embed zoo Client and Server in Android devices...Its a
research project involves Mobile Distribuited CEP ! I´m afraid too :)
Probably there is not a quick solution !!!! :(
thanks again.
Best Regards,
Jorge.
2016-01-06 15:39 GMT-03:00 Chris Nauroth <cn...@hortonworks.com>:
> Hello Jorge,
>
> Can you please clarify if it's the ZooKeeper client side or server side
> that you're interested in? I assume it's the client side, because an
> ensemble deployed to Android devices would likely be very unreliable, but
> I want to make sure we understand.
>
> I'm not familiar with Android development myself, but a quick Google
> search shows that the entire javax.management package is missing on the
> Dalvik VM.
>
> http://developer.android.com/reference/packages.html
>
>
> That would imply that any reference to javax.management classes from
> within ZooKeeper code would trigger a NoClassDefFoundError. Is that what
> you're seeing?
>
> If so, then I'm afraid there is likely no quick solution. As Flavio said,
> javax.management is used throughout the ZooKeeper code, and we don't have
> any kind of mode that would completely "skip over" those class references.
> There are various options for controlling JMX on the server side through
> environment variables to enable local access only vs. a remote port, SSL,
> authentication, etc. (See bin/zkServer.sh.) However, I have a feeling
> this is not really what you're requesting.
>
> --Chris Nauroth
>
>
>
>
> On 1/6/16, 6:18 AM, "Jorge Fonseca" <jc...@gmail.com> wrote:
>
> >Flavio,
> >
> >I just studied the zookeeper code, and see that JMX is embedded in the
> >code... However, a hope "appears" when a read "*JMX - how to enable JMX in
> >ZooKeeper*" in the zoo docs. I thought: if there is how to enable it,
> >problably there is how to disable :)
> >
> >
> >Jorge.
> >
> >2016-01-06 11:08 GMT-03:00 Jorge Fonseca <jc...@gmail.com>:
> >
> >> Thanks Flavio !
> >>
> >> For example, If i want to execute a zookeeper app in a limited mobile
> >> environment (like Android) that does not support JMX. Is it possible?
> >>
> >> Jorge.
> >>
> >>
> >> 2016-01-06 10:59 GMT-03:00 Flavio Junqueira <fp...@apache.org>:
> >>
> >>> Hi Jorge,
> >>>
> >>> The short answer is that it is fairly embedded in the code, but I can
> >>> really interpret your question in two ways: you're having some problem
> >>>with
> >>> jmx or you want to use something else to monitor your zookeeper
> >>>ensemble.
> >>> Perhaps you can give some more detail about the problem you're trying
> >>>to
> >>> solve so that we can help you out here.
> >>>
> >>> -Flavio
> >>>
> >>> > On 06 Jan 2016, at 13:50, Jorge Fonseca <jc...@gmail.com>
> wrote:
> >>> >
> >>> > Hi All,
> >>> >
> >>> > Have a nice new year :)
> >>> > A simple and direct question.
> >>> >
> >>> > Is it possible to port zookeeper to a platform that does not have JMX
> >>> > technology? Or Zookeeper is fully-dependent of this technology?
> >>> >
> >>> >
> >>> > Best regards !
> >>> > Jorge.
> >>>
> >>>
> >>
>
>
Re: Zookeeper without JMX ?
Posted by Chris Nauroth <cn...@hortonworks.com>.
Hello Jorge,
Can you please clarify if it's the ZooKeeper client side or server side
that you're interested in? I assume it's the client side, because an
ensemble deployed to Android devices would likely be very unreliable, but
I want to make sure we understand.
I'm not familiar with Android development myself, but a quick Google
search shows that the entire javax.management package is missing on the
Dalvik VM.
http://developer.android.com/reference/packages.html
That would imply that any reference to javax.management classes from
within ZooKeeper code would trigger a NoClassDefFoundError. Is that what
you're seeing?
If so, then I'm afraid there is likely no quick solution. As Flavio said,
javax.management is used throughout the ZooKeeper code, and we don't have
any kind of mode that would completely "skip over" those class references.
There are various options for controlling JMX on the server side through
environment variables to enable local access only vs. a remote port, SSL,
authentication, etc. (See bin/zkServer.sh.) However, I have a feeling
this is not really what you're requesting.
--Chris Nauroth
On 1/6/16, 6:18 AM, "Jorge Fonseca" <jc...@gmail.com> wrote:
>Flavio,
>
>I just studied the zookeeper code, and see that JMX is embedded in the
>code... However, a hope "appears" when a read "*JMX - how to enable JMX in
>ZooKeeper*" in the zoo docs. I thought: if there is how to enable it,
>problably there is how to disable :)
>
>
>Jorge.
>
>2016-01-06 11:08 GMT-03:00 Jorge Fonseca <jc...@gmail.com>:
>
>> Thanks Flavio !
>>
>> For example, If i want to execute a zookeeper app in a limited mobile
>> environment (like Android) that does not support JMX. Is it possible?
>>
>> Jorge.
>>
>>
>> 2016-01-06 10:59 GMT-03:00 Flavio Junqueira <fp...@apache.org>:
>>
>>> Hi Jorge,
>>>
>>> The short answer is that it is fairly embedded in the code, but I can
>>> really interpret your question in two ways: you're having some problem
>>>with
>>> jmx or you want to use something else to monitor your zookeeper
>>>ensemble.
>>> Perhaps you can give some more detail about the problem you're trying
>>>to
>>> solve so that we can help you out here.
>>>
>>> -Flavio
>>>
>>> > On 06 Jan 2016, at 13:50, Jorge Fonseca <jc...@gmail.com> wrote:
>>> >
>>> > Hi All,
>>> >
>>> > Have a nice new year :)
>>> > A simple and direct question.
>>> >
>>> > Is it possible to port zookeeper to a platform that does not have JMX
>>> > technology? Or Zookeeper is fully-dependent of this technology?
>>> >
>>> >
>>> > Best regards !
>>> > Jorge.
>>>
>>>
>>
Re: Zookeeper without JMX ?
Posted by Jorge Fonseca <jc...@gmail.com>.
Flavio,
I just studied the zookeeper code, and see that JMX is embedded in the
code... However, a hope "appears" when a read "*JMX - how to enable JMX in
ZooKeeper*" in the zoo docs. I thought: if there is how to enable it,
problably there is how to disable :)
Jorge.
2016-01-06 11:08 GMT-03:00 Jorge Fonseca <jc...@gmail.com>:
> Thanks Flavio !
>
> For example, If i want to execute a zookeeper app in a limited mobile
> environment (like Android) that does not support JMX. Is it possible?
>
> Jorge.
>
>
> 2016-01-06 10:59 GMT-03:00 Flavio Junqueira <fp...@apache.org>:
>
>> Hi Jorge,
>>
>> The short answer is that it is fairly embedded in the code, but I can
>> really interpret your question in two ways: you're having some problem with
>> jmx or you want to use something else to monitor your zookeeper ensemble.
>> Perhaps you can give some more detail about the problem you're trying to
>> solve so that we can help you out here.
>>
>> -Flavio
>>
>> > On 06 Jan 2016, at 13:50, Jorge Fonseca <jc...@gmail.com> wrote:
>> >
>> > Hi All,
>> >
>> > Have a nice new year :)
>> > A simple and direct question.
>> >
>> > Is it possible to port zookeeper to a platform that does not have JMX
>> > technology? Or Zookeeper is fully-dependent of this technology?
>> >
>> >
>> > Best regards !
>> > Jorge.
>>
>>
>
Re: Zookeeper without JMX ?
Posted by Jorge Fonseca <jc...@gmail.com>.
Thanks Flavio !
For example, If i want to execute a zookeeper app in a limited mobile
environment (like Android) that does not support JMX. Is it possible?
Jorge.
2016-01-06 10:59 GMT-03:00 Flavio Junqueira <fp...@apache.org>:
> Hi Jorge,
>
> The short answer is that it is fairly embedded in the code, but I can
> really interpret your question in two ways: you're having some problem with
> jmx or you want to use something else to monitor your zookeeper ensemble.
> Perhaps you can give some more detail about the problem you're trying to
> solve so that we can help you out here.
>
> -Flavio
>
> > On 06 Jan 2016, at 13:50, Jorge Fonseca <jc...@gmail.com> wrote:
> >
> > Hi All,
> >
> > Have a nice new year :)
> > A simple and direct question.
> >
> > Is it possible to port zookeeper to a platform that does not have JMX
> > technology? Or Zookeeper is fully-dependent of this technology?
> >
> >
> > Best regards !
> > Jorge.
>
>
Re: Zookeeper without JMX ?
Posted by Flavio Junqueira <fp...@apache.org>.
Hi Jorge,
The short answer is that it is fairly embedded in the code, but I can really interpret your question in two ways: you're having some problem with jmx or you want to use something else to monitor your zookeeper ensemble. Perhaps you can give some more detail about the problem you're trying to solve so that we can help you out here.
-Flavio
> On 06 Jan 2016, at 13:50, Jorge Fonseca <jc...@gmail.com> wrote:
>
> Hi All,
>
> Have a nice new year :)
> A simple and direct question.
>
> Is it possible to port zookeeper to a platform that does not have JMX
> technology? Or Zookeeper is fully-dependent of this technology?
>
>
> Best regards !
> Jorge.