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Posted to user@zookeeper.apache.org by Yosef Arraf <yo...@gmail.com> on 2011/06/27 17:33:22 UTC
delete znode when client's disconnect
Hi,
My Name is Yosef and i'm facing a problem when one of my ZooKeeper
Clients crash or shutdown (disconnected),
i want to delete is is znode and make it as unavailable.
Any one have any Idea that can help me to solve my problem?
Thanks,
Yosef.
Re: delete znode when client's disconnect
Posted by Daniel Gómez Ferro <da...@yahoo-inc.com>.
Hi,
You can also have a look at this issue:
https://issues.apache.org/jira/browse/ZOOKEEPER-723
Think about which API suits your use case better, or which one you like more.
On Jun 27, 2011, at 19:42 , Yosef Arraf wrote:
> a)The zookeeper holds an entries(nods) of resources
> (resource allocation framework),
> Any component in our running environment wants to get any resource (by
> type) will ask the zookeeper to get it (attributes,location,port,...)
> Every resource will be added as a node in the zookeeper (on
> it's bootstrap will create zKclient and add himself to the zookeeper)
> if the client die OR the resource machine is not available - So i need to
> delete it's node.
>
>
> -Yosef.
>
> On Mon, Jun 27, 2011 at 8:27 PM, Ivan Kelly <iv...@yahoo-inc.com> wrote:
>
>> **
>> a) explain your problem more, what type of data do you want to store under
>> the client znode? what is the lifetime of clients? what do you expect to
>> happen when clients die?
>> b) reply to the list so others in the future can benefit from any
>> solutions/discussions
>>
>> -Ivan
>>
>>
>> On 27/06/2011 19:23, Yosef Arraf wrote:
>>
>> any other idea?
>>
>>
>> On Mon, Jun 27, 2011 at 8:09 PM, Ivan Kelly <iv...@yahoo-inc.com> wrote:
>>
>>> Thats not possible at the moment. Have a look at
>>> https://issues.apache.org/jira/browse/ZOOKEEPER-834
>>>
>>> -Ivan
>>>
>>>
>>> On 27/06/2011 19:02, Yosef Arraf wrote:
>>>
>>> Hi Ivan,
>>> Thanks for the replay,
>>> we cannot use Ephemeral nodes:
>>> "Ephemeral znodes are not allowed to have children"
>>> Our Nodes have chields (/nodeid/attrebutes/type/id/...)
>>>
>>> any other idea?
>>> Thanks,
>>> Yosef
>>>
>>>
>>>
>>> On Mon, Jun 27, 2011 at 7:40 PM, Ivan Kelly <iv...@yahoo-inc.com> wrote:
>>>
>>>> Hi Yosef,
>>>>
>>>> Sounds like you need to create the znode as Ephemeral.
>>>>
>>>> http://zookeeper.apache.org/doc/r3.3.3/api/org/apache/zookeeper/CreateMode.html#EPHEMERAL
>>>>
>>>> Regards
>>>> Ivan
>>>>
>>>>
>>>> On 27/06/2011 17:33, Yosef Arraf wrote:
>>>>
>>>>> Hi,
>>>>> My Name is Yosef and i'm facing a problem when one of my ZooKeeper
>>>>> Clients crash or shutdown (disconnected),
>>>>> i want to delete is is znode and make it as unavailable.
>>>>>
>>>>> Any one have any Idea that can help me to solve my problem?
>>>>>
>>>>> Thanks,
>>>>> Yosef.
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
Re: delete znode when client's disconnect
Posted by Ted Dunning <te...@gmail.com>.
So how often do resources come and go?
On Mon, Jun 27, 2011 at 10:42 AM, Yosef Arraf <yo...@gmail.com> wrote:
> a)The zookeeper holds an entries(nods) of resources
> (resource allocation framework),
> Any component in our running environment wants to get any resource (by
> type) will ask the zookeeper to get it (attributes,location,port,...)
> Every resource will be added as a node in the zookeeper (on
> it's bootstrap will create zKclient and add himself to the zookeeper)
> if the client die OR the resource machine is not available - So i need to
> delete it's node.
>
>
> -Yosef.
>
> On Mon, Jun 27, 2011 at 8:27 PM, Ivan Kelly <iv...@yahoo-inc.com> wrote:
>
> > **
> > a) explain your problem more, what type of data do you want to store
> under
> > the client znode? what is the lifetime of clients? what do you expect to
> > happen when clients die?
> > b) reply to the list so others in the future can benefit from any
> > solutions/discussions
> >
> > -Ivan
> >
> >
> > On 27/06/2011 19:23, Yosef Arraf wrote:
> >
> > any other idea?
> >
> >
> > On Mon, Jun 27, 2011 at 8:09 PM, Ivan Kelly <iv...@yahoo-inc.com> wrote:
> >
> >> Thats not possible at the moment. Have a look at
> >> https://issues.apache.org/jira/browse/ZOOKEEPER-834
> >>
> >> -Ivan
> >>
> >>
> >> On 27/06/2011 19:02, Yosef Arraf wrote:
> >>
> >> Hi Ivan,
> >> Thanks for the replay,
> >> we cannot use Ephemeral nodes:
> >> "Ephemeral znodes are not allowed to have children"
> >> Our Nodes have chields (/nodeid/attrebutes/type/id/...)
> >>
> >> any other idea?
> >> Thanks,
> >> Yosef
> >>
> >>
> >>
> >> On Mon, Jun 27, 2011 at 7:40 PM, Ivan Kelly <iv...@yahoo-inc.com>
> wrote:
> >>
> >>> Hi Yosef,
> >>>
> >>> Sounds like you need to create the znode as Ephemeral.
> >>>
> >>>
> http://zookeeper.apache.org/doc/r3.3.3/api/org/apache/zookeeper/CreateMode.html#EPHEMERAL
> >>>
> >>> Regards
> >>> Ivan
> >>>
> >>>
> >>> On 27/06/2011 17:33, Yosef Arraf wrote:
> >>>
> >>>> Hi,
> >>>> My Name is Yosef and i'm facing a problem when one of my ZooKeeper
> >>>> Clients crash or shutdown (disconnected),
> >>>> i want to delete is is znode and make it as unavailable.
> >>>>
> >>>> Any one have any Idea that can help me to solve my problem?
> >>>>
> >>>> Thanks,
> >>>> Yosef.
> >>>>
> >>>
> >>>
> >>
> >>
> >
> >
>
Re: delete znode when client's disconnect
Posted by Yosef Arraf <yo...@gmail.com>.
a)The zookeeper holds an entries(nods) of resources
(resource allocation framework),
Any component in our running environment wants to get any resource (by
type) will ask the zookeeper to get it (attributes,location,port,...)
Every resource will be added as a node in the zookeeper (on
it's bootstrap will create zKclient and add himself to the zookeeper)
if the client die OR the resource machine is not available - So i need to
delete it's node.
-Yosef.
On Mon, Jun 27, 2011 at 8:27 PM, Ivan Kelly <iv...@yahoo-inc.com> wrote:
> **
> a) explain your problem more, what type of data do you want to store under
> the client znode? what is the lifetime of clients? what do you expect to
> happen when clients die?
> b) reply to the list so others in the future can benefit from any
> solutions/discussions
>
> -Ivan
>
>
> On 27/06/2011 19:23, Yosef Arraf wrote:
>
> any other idea?
>
>
> On Mon, Jun 27, 2011 at 8:09 PM, Ivan Kelly <iv...@yahoo-inc.com> wrote:
>
>> Thats not possible at the moment. Have a look at
>> https://issues.apache.org/jira/browse/ZOOKEEPER-834
>>
>> -Ivan
>>
>>
>> On 27/06/2011 19:02, Yosef Arraf wrote:
>>
>> Hi Ivan,
>> Thanks for the replay,
>> we cannot use Ephemeral nodes:
>> "Ephemeral znodes are not allowed to have children"
>> Our Nodes have chields (/nodeid/attrebutes/type/id/...)
>>
>> any other idea?
>> Thanks,
>> Yosef
>>
>>
>>
>> On Mon, Jun 27, 2011 at 7:40 PM, Ivan Kelly <iv...@yahoo-inc.com> wrote:
>>
>>> Hi Yosef,
>>>
>>> Sounds like you need to create the znode as Ephemeral.
>>>
>>> http://zookeeper.apache.org/doc/r3.3.3/api/org/apache/zookeeper/CreateMode.html#EPHEMERAL
>>>
>>> Regards
>>> Ivan
>>>
>>>
>>> On 27/06/2011 17:33, Yosef Arraf wrote:
>>>
>>>> Hi,
>>>> My Name is Yosef and i'm facing a problem when one of my ZooKeeper
>>>> Clients crash or shutdown (disconnected),
>>>> i want to delete is is znode and make it as unavailable.
>>>>
>>>> Any one have any Idea that can help me to solve my problem?
>>>>
>>>> Thanks,
>>>> Yosef.
>>>>
>>>
>>>
>>
>>
>
>
Re: delete znode when client's disconnect
Posted by Ivan Kelly <iv...@yahoo-inc.com>.
Thats not possible at the moment. Have a look at
https://issues.apache.org/jira/browse/ZOOKEEPER-834
-Ivan
On 27/06/2011 19:02, Yosef Arraf wrote:
> Hi Ivan,
> Thanks for the replay,
> we cannot use Ephemeral nodes:
> "Ephemeral znodes are not allowed to have children"
> Our Nodes have chields (/nodeid/attrebutes/type/id/...)
>
> any other idea?
> Thanks,
> Yosef
>
>
>
> On Mon, Jun 27, 2011 at 7:40 PM, Ivan Kelly <ivank@yahoo-inc.com
> <ma...@yahoo-inc.com>> wrote:
>
> Hi Yosef,
>
> Sounds like you need to create the znode as Ephemeral.
> http://zookeeper.apache.org/doc/r3.3.3/api/org/apache/zookeeper/CreateMode.html#EPHEMERAL
>
> Regards
> Ivan
>
>
> On 27/06/2011 17:33, Yosef Arraf wrote:
>
> Hi,
> My Name is Yosef and i'm facing a problem when one of my ZooKeeper
> Clients crash or shutdown (disconnected),
> i want to delete is is znode and make it as unavailable.
>
> Any one have any Idea that can help me to solve my problem?
>
> Thanks,
> Yosef.
>
>
>
Re: delete znode when client's disconnect
Posted by Ivan Kelly <iv...@yahoo-inc.com>.
Hi Yosef,
Sounds like you need to create the znode as Ephemeral.
http://zookeeper.apache.org/doc/r3.3.3/api/org/apache/zookeeper/CreateMode.html#EPHEMERAL
Regards
Ivan
On 27/06/2011 17:33, Yosef Arraf wrote:
> Hi,
> My Name is Yosef and i'm facing a problem when one of my ZooKeeper
> Clients crash or shutdown (disconnected),
> i want to delete is is znode and make it as unavailable.
>
> Any one have any Idea that can help me to solve my problem?
>
> Thanks,
> Yosef.