link to the doc:
https://github.com/apache/zookeeper/blob/master/zookeeper-docs/src/main/resources/markdown/zookeeperUseCases.md
On Tue, Sep 24, 2019 at 4:36 AM Enrico Olivelli wrote:
> Cool
>
> I am not sure, do we have to wait for 3.6 release before updating the
> website?
>
> Enrico
>
> Il
>> However, session could expire after connection established. Where is the
latter case trigger?
ZooKeeper checks every incoming request and the appertained session. When a
session is expiring, all requests appertain to this session will fail
session check and the responses generated will contain
Enrico,
Well I think I understand how it works now and why you said it is a weird
edge case
>if the server/cluster is down the session cannot expire.
If the server find a session expire, it will close the socket and the
client will try to
reconnect to the ensemble. While it successfully
1.Thanks Olivelli for this letter. ZOOKEEPER-3529 has now landed. 1.1 The
references may be a good reading material and they're are public and free.
welcome scrutiny. 1.2 The documentation has a declaration about intellectual
property rights and privacy.2 If you have a use case, please do
Enrico,
Thanks for your reply.
Still I cannot understand how session expire detected on client side. The
only codepath
KeeperState.Expired generated is ClientCnxn#onConnected. It seems only
called on
client successfully connected to server. However, session could expire
after connection
Zili,
Sessions expire in the server. If you are not connected to the cluster you
cannot assume that the session is expired.
There is another weird edge case: if the server/cluster is down the session
cannot expire.
Hope that helps
Enrico
Il mar 24 set 2019, 13:54 Zili Chen ha scritto:
> Hi
Hi ZooKeepers,
I want to trace where Watcher.Event.KeeperState.Expired generated and it
seems only generated
when connect to server fails due to exceed session timeout.
Besides, I find code snippet in ClientCnxn as below
void queueEvent(String clientPath, int err, Set
materializedWatchers,
Cool
I am not sure, do we have to wait for 3.6 release before updating the
website?
Enrico
Il mar 24 set 2019, 12:37 Justin Ling Mao ha
scritto:
> 1.Thanks Olivelli for this letter. ZOOKEEPER-3529 has now landed. 1.1
> The references may be a good reading material and they're are public and
test
