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From 李赫元 <liheyuan...@gmail.com>
Subject Re: How to recover previous watcher & event after "session expired"
Date Sat, 19 May 2012 03:33:23 GMT
Thanks for your help.
That means we can't totally rely on watchs because it may loss event if
session expired, right?

在 2012年5月19日星期六,Camille Fournier <camille@apache.org> 写道:
> I'm not sure what you mean in question #1. A session expired event
> generally causes the client to become completely invalid, you could
> wrap the client in your own logic to record what you were watching,
> but I don't think you can get that out of the client after it's
> expired.
>
> 2. You won't be able to see events that happened when the session was
> expired. The server has closed your connection and won't know to send
> you events unless you have a valid session with a valid watch.
>
> 3. Reconnect won't work on expired sessions, you need to create an
> entirely new session. Reconnect works when you get disconnected but
> not expired.
>
> Hope that helps
> On Fri, May 18, 2012 at 12:18 PM, 李赫元 <liheyuan.bj@gmail.com> wrote:
>> Hi, All
>>
>> I'm dealing with the case of "session expired" event. Please help me
>> with the following question.
>>
>> 1. After receive "session expired" event, how to recover the watch
>> that are setting before expired gracefully?
>>
>>
>> 2.Currently, I record the watch setting and call the api to set it
>> again after I got "expired event". It will callback for event after
>> connection was success again. But what about the event happend between
>> I success reinit the session to zk server. Currently, it got lost. Is
>> there any way that I can got these events ?
>>
>>
>> 3.I try to use reconnect, in zookeeper_init, but does't work. My guess
>> is reconnect is only work for connection that are in state connect
>> (Not valid after session timeout), is it right?
>>
>>
>> Thanks for your help !
>

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