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Date: Thu, 26 Jun 2014 10:42:06 -0400
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Subject: Re: Best way to bundle zk in our product
From: Lahiru Gunathilake <glahiru@gmail.com>
To: Rakesh R <rakeshr@huawei.com>
Cc: "user@zookeeper.apache.org" <user@zookeeper.apache.org>
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HI Rakesh,

Thanks for your response. If ZK call System.ext() my application will
immediately crash I guess. And can I connect to ZK using zkCli if I do
embedded mode.

I believe answer is NO...

I have a feeling cleanest way is to ask users to download ZK and start or
bundle ZK jars with all scripts and always start as a separate JVM.

Regards
Lahiru


On Thu, Jun 26, 2014 at 10:20 AM, Rakesh R <rakeshr@huawei.com> wrote:

> Hi Lahiru,
>
> I had embedded ZooKeeper server without any issues but not in the
> production cluster. I feel you can use it for day to day development phase.
> Its being used in ZK unit tests, please refer
> org.apache.zookeeper.test.QuorumUtil or
> org.apache.zookeeper.server.quorum.QuorumPeerTestBase.
>
> I've noticed few cases, this may be useful to you.
>
> 1) ZK server code has System.exit() which may affect your service.
> 2) Better to redirect ZK logs to a separate log file which will help in
> debugging issues independently.
> 3) Observe the network traffic and GC, this may affect ZK server
> communications and resulting in failures.
> 4) In general, it would be difficult to restart your service or ZK server
> without affecting each other.
>
>
> -Rakesh
>
> -----Original Message-----
> From: Lahiru Gunathilake [mailto:glahiru@gmail.com]
> Sent: 26 June 2014 18:50
> To: user@zookeeper.apache.org
> Subject: Best way to bundle zk in our product
>
> Hi All,
>
> With all the community help I was able to integrate ZK to Apache
> Airavata[1] to achieve fault-tolerance and it was a very interesting
> experience to work with ZK. It works as it explains without any issue.
>
> Now I have an issue how to bundle and ship it. Currently what I have asked
> the community is to start ZK instance then run our services. Personally I
> like that approach and its much cleaner and in production we can cluster
> both Airavata and ZK. But for the curiosity I want to know is there a
> better way to bundle like an embedded zk which is stable enough for day
> today development or there is a better way to do it.
>
> [1]
> Regards
> Lahiru
>
> --
> System Analyst Programmer
> PTI Lab
> Indiana University
>


-- 
System Analyst Programmer
PTI Lab
Indiana University

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