Re: discuss about Procedure module

[HW-Chao Wang]

The procedure framework is an interface that provides unified state management 
for those with multiple operations. Ensure consistency by rolling back and 
retrying. It can be used to deal with fault scenarios. 1. A readme and an 
example will be written for other developers to use. 2. At that time, it was 
considered that the procedure could run in a separate process, so it was placed 
in a separate module. After discussion, the procedure is run in the config node 
process and will be combined in the next pr. pull/5811。




---Original---
From: "Xiangdong Huang"https://github.com/apache/iotdb/pull/5477

Best,
---
Xiangdong Huang
School of Software, Tsinghua University

黄向东
清华大学 软件学院

discuss about Procedure module

[Xiangdong Huang]

Hi,

I see there is a procedure module on master branch, and there is some
design document [1] about it.

But I still have some questions about the module, and want to have a
discussion:

1. what is it for? (can someone use several sentences or several paragraphs
to introduce it? and put the introduction into a README.md file?) . (and I
can find 11 kinds of implementations ... why..)

2. why the procedure should be considered as a new "module" rather than
just a class "packet"?

[1] https://github.com/apache/iotdb/pull/5477

Best,
---
Xiangdong Huang
School of Software, Tsinghua University

 黄向东
清华大学 软件学院