Thanks for your reply. Then another question comes, for now which is the 
‘latest’ version, storm-2.0.0 or storm-1.2.3? 2.0.0 seems the largest number 
which always means latest version in other open source mid-ware, but 1.2.3 was 
just released serval days ago?  

What I meant may be to some extend a blind alley, but I am really confused is 
1.2.3 or 2.0.0  suggested for a new production?  Comparing with apache kafka, 
it’s much easier to choose because it has only one version line, see 
https://kafka.apache.org/downloads#2.3.0 
<https://kafka.apache.org/downloads#2.3.0> which means it’s easy to choose a 
suitable one


> 在 2019年7月22日,22:13,Stig Rohde Døssing <[email protected]> 写道:
> 
> Hi,
> 
> Most of these version lines aren't active. The currently maintained lines are 
> 1.2.x and 2.0.0. 
> 
> Regarding the difference between 1.x and 2.x, please see 
> https://storm.apache.org/2019/05/30/storm200-released.html 
> <https://storm.apache.org/2019/05/30/storm200-released.html>. You can also go 
> look at the release notes here 
> https://www.apache.org/dist/storm/apache-storm-2.0.0/RELEASE_NOTES.html 
> <https://www.apache.org/dist/storm/apache-storm-2.0.0/RELEASE_NOTES.html> 
> (note that these contain some changes that were also in later 1.2.x releases)
> 
> I think unless you hear otherwise, the suggested version is the latest 
> version. We don't release Storm unless we think it's production ready.
> 
> Den man. 22. jul. 2019 kl. 13.52 skrev 沈光辉 <[email protected] 
> <mailto:[email protected]>>:
> Hi,
> 
> I’m wonder what is the diff between storm-1.2.x and storm 2.0.0? I know the 
> several important features of storm-2.0.0.
> However, if I now need to choose a version to apply into production, which 
> version is suggested? I’m wondering why storm-1.2.x and storm-0.x even 
> storm-2.x all kept in upgrading? 
> 
> Thanks~

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