Hi Mateusz,
In version 1.5 we released the binary objects [1] format that allows to
store cache in class version independent form. Thus you don't need to
have any classes on server side.
This ability allows dynamic change to an objects structure, and even
allows multiple clients with different versions of class definitions to
co-exist.
In my understanding if you switch to this format you will be able to
support your use case.
If something is unclear don't hesitate to ask.
[1] https://apacheignite.readme.io/docs/binary-marshaller
--
Denis
On 2/10/2016 4:06 PM, mp wrote:
Hi Denis,
Thanks for your reply.
So, summing up, it seems that in the context of my use case, version
1.5 does not differ from 1.4? Which means that I still cannot achieve
my goal: different versions of the same class (from different clients)
running on the cluster at the same time?
As far as I understand this involves:
1. https://issues.apache.org/jira/browse/IGNITE-1823
2. https://issues.apache.org/jira/browse/IGNITE-2339
3. Removing the requirement for caches to work only with SHARED and
CONTINUOUS deployment modes (this was announced by Dmitriy in
http://apache-ignite-users.70518.x6.nabble.com/Distributed-queue-problem-with-peerClassLoading-enabled-tp1762p1829.html
)
Is there any chance the above use case will be possible in near future
(any upcoming version)?
I really like the API and concept of Ignite. If only I could achieve
the above scenario...
Cheers,
-Mateusz
On Thu, Jan 7, 2016 at 5:25 PM, Denis Magda <[email protected]
<mailto:[email protected]>> wrote:
Mateusz,
It doesn’t work for now because peerClassLoading doesn’t work for
objects that are stored in the binary format in a cache.
Since starting from 1.5 BinaryMarshaller is a default one all the
objects are stored in a such format in caches by default.
If you prefer to turn off such a behavior you can set
IgniteConfiguration.setMarshaller(new OptimizedMarshaller()) for
every node and your test should work as before.
—
Denis
On 7 янв. 2016 г., at 17:09, mp <[email protected]
<mailto:[email protected]>> wrote:
Hello Denis,
Thanks a lot for your reply!
Concerning point 2: does it mean that "peerClassLoading" simply
does not work in 1.5?
It used to work (partially) in 1.4 (details described earlier in
the message thread).
Cheers,
-Mateusz
On Thu, Jan 7, 2016 at 1:38 PM, Denis Magda <[email protected]
<mailto:[email protected]>> wrote:
Hi Mateusz,
1. It seems that distributed cache is still *not* available in
PRIVATE/ISOLATED modes. Is this correct?
Right, it hasn't been fixed yet. I've just followed up the
related discussion on the dev list. Please follow it to see
the most up-to-date information
http://apache-ignite-developers.2346864.n4.nabble.com/Fwd-Distributed-queue-problem-with-peerClassLoading-enabled-tp4521p6440.html
2. When I run my simple test code in the default SHARED mode
(the same as
specified in
https://issues.apache.org/jira/browse/IGNITE-1823 jira issue),
I still get an error. However the cause exception seems to be
different.
Please see attached server log.
The reason is that there is an attempt to deserialize a
binary object stored on a server node and the server node
doesn't have object's class definition in its class path.
I've opened a ticket
https://issues.apache.org/jira/browse/IGNITE-2339
As a workaround you can put a class definition on server's
class path and the problem will disappear.
Regards,
Denis
On 1/7/2016 1:30 PM, mjjp wrote:
Hello,
I have just downloaded 1.5.0-final to check if my problem
has been resolved.
Either I'm doing something wrong, or version 1.5 has the
same behavior in
this context:
1. It seems that distributed cache is still *not*
available in
PRIVATE/ISOLATED modes. Is this correct?
2. When I run my simple test code in the default SHARED
mode (the same as
specified in
https://issues.apache.org/jira/browse/IGNITE-1823 jira
issue),
I still get an error. However the cause exception seems
to be different.
Please see attached server log.
Would you be able to check the attached log to verify if
this is an expected
behavior in 1.5?
Cheers,
-Mateusz
ignite-fd14d572.log
<http://apache-ignite-users.70518.x6.nabble.com/file/n2416/ignite-fd14d572.log>
--
View this message in context:
http://apache-ignite-users.70518.x6.nabble.com/Distributed-queue-problem-with-peerClassLoading-enabled-tp1762p2416.html
Sent from the Apache Ignite Users mailing list archive at
Nabble.com <http://nabble.com>.
