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From Debraj Manna <subharaj.ma...@gmail.com>
Subject Re: Is zookeeper 3.4.13 client backward compatible with 3.4.8?
Date Tue, 04 Sep 2018 08:54:31 GMT
Thanks again Tamas.

On Tue, Sep 4, 2018 at 2:21 PM Tamas Penzes <tamaas@cloudera.com> wrote:

> Hi Debraj,
>
> ZooKeeper 3.4.5-cdh5.15.1 is a version delivered by Cloudera within CDH
> 5.15.1, so it differs from Apache ZooKeeper. (It is Apache ZooKeeper 3.4.5
> with carefully selected fixes backported manually.)
> If you want to know more about it, or have Cloudera Hadoop related
> questions please turn to Cloudera support. We are happy to answer your
> questions there.
>
> In general I can tell you that of course our ZooKeeper versions follow the
> general guidelines of Apache ZooKeeper about backward compatibility.
>
> Regards, Tamaas
>
> On Tue, Sep 4, 2018 at 10:36 AM Debraj Manna <subharaj.manna@gmail.com>
> wrote:
>
>> I am also seeing a transitive dependency of zookeeper jar 3.4.5-cdh5.15.1
>> in my mvn dependency tree.
>>
>> Is 3.4.5-cdh5.15.1 also follows the backward compatibility  guideline as
>> mentioned in
>> https://cwiki.apache.org/confluence/display/ZOOKEEPER/ReleaseManagement ?
>>
>> On Thu, Aug 30, 2018 at 9:53 PM Debraj Manna <subharaj.manna@gmail.com>
>> wrote:
>>
>>> Thanks Tamaas for replying.
>>>
>>> On Thu 30 Aug, 2018, 9:51 PM Tamas Penzes, <tamaas@cloudera.com.invalid>
>>> wrote:
>>>
>>>> Hi Debraj,
>>>>
>>>> ZooKeeper 3.4.13 is only 5 bugfix version above 3.4.8. They are from the
>>>> same major.minor version, which means they must be compatible on API
>>>> level
>>>> (can work together).
>>>>
>>>> On the other hand 3.4.13 contains bugfixes which can have effects on
>>>> server
>>>> and client side too. If you use different version on server and client
>>>> side
>>>> you might run into problems which are fixed in 3.4.13 on server side but
>>>> not yet in 3.4.8 in your clients. It can make harder to find the root
>>>> cause
>>>> of any issue.
>>>>
>>>> Regards, Tamaas
>>>>
>>>> On Thu, Aug 30, 2018 at 5:54 PM Debraj Manna <subharaj.manna@gmail.com>
>>>> wrote:
>>>>
>>>> > Hi
>>>> >
>>>> > I have read about the backward compatability as mentioned in the
>>>> confluence
>>>> > page
>>>> > <
>>>> https://cwiki.apache.org/confluence/display/ZOOKEEPER/ReleaseManagement
>>>> >.
>>>> > But I am still having the below doubt can someone confirm
>>>> >
>>>> > I upgraded to zookeeper servers to 3.4.13 from 3.4.8. I want to
>>>> upgrade
>>>> > java client also to 3.4.13 from 3.4.8. Can someone let me if the
>>>> zookeeper
>>>> > clients are also backward compatible? I have few other dependencies
>>>> which
>>>> > are using zookeeper client 3.4.8. So confirming.
>>>> >
>>>> > After reading the above confluence page it appears yes but I want to
>>>> > confirm.
>>>> >
>>>> > Thanks,
>>>> >
>>>>
>>>>
>>>> --
>>>> *Tamás Pénzes* | Engineering Manager
>>>> e. tamaas@cloudera.com
>>>> cloudera.com <https://www.cloudera.com>
>>>>
>>>> [image: Cloudera] <https://www.cloudera.com/>
>>>>
>>>> [image: Cloudera on Twitter] <https://twitter.com/cloudera> [image:
>>>> Cloudera on Facebook] <https://www.facebook.com/cloudera> [image:
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>>>> on LinkedIn] <https://www.linkedin.com/company/cloudera>
>>>> ------------------------------
>>>>
>>>
>
> --
> *Tamás Pénzes* | Engineering Manager
> e. tamaas@cloudera.com
> cloudera.com <https://www.cloudera.com>
>
> [image: Cloudera] <https://www.cloudera.com/>
>
> [image: Cloudera on Twitter] <https://twitter.com/cloudera> [image:
> Cloudera on Facebook] <https://www.facebook.com/cloudera> [image:
> Cloudera on LinkedIn] <https://www.linkedin.com/company/cloudera>
> ------------------------------
>
>

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