Comments (3)
Hey there. Could you please provide me an example code for the buggy behaviour ?
from pipeline.
When I run the sample code you gave, the sample code is pipeline/examples/advanced/main.go
The sample code creates a pipeline with three stages. The first stage is executed sequentially, the second and third stages are executed concurrently, and the first step of the third stage returns an error.
I found that the first stage executed sequentially worked well, while the second and third stages executed concurrently failed, running the last step three times in both cases.
The result is as follows,You can find that stage1 and stage2 both run step2, and run it three times.
[pipeline][getfiles]: begin
[stage-0][stage]: begin
[stage-0][stage]: is not concurrent
[step-0][getfiles.con_stage.*main.downloadStep]: begin
[step-0][getfiles.con_stage.*main.downloadStep]: &{Data:<nil> KeyVal:map[]}
[step-0][getfiles.con_stage.*main.downloadStep]: Started downloading file 1mbfile
[step-0][getfiles.con_stage.*main.downloadStep]: Successfully downloaded file 1mbfile
[step-0][getfiles.con_stage.*main.downloadStep]: end
[step-1][getfiles.con_err_stage.*main.downloadStep]: begin
[step-1][getfiles.con_err_stage.*main.downloadStep]: &{Data:{bytesDownloaded:102400} KeyVal:map[bytesDownloaded:102400]}
[step-1][getfiles.con_err_stage.*main.downloadStep]: Started downloading file 5mbfile
[step-1][getfiles.con_err_stage.*main.downloadStep]: Successfully downloaded file 5mbfile
[step-1][getfiles.con_err_stage.*main.downloadStep]: end
[step-2][getfiles.con_err_stage.*main.downloadStep]: begin
[step-2][getfiles.con_err_stage.*main.downloadStep]: &{Data:{bytesDownloaded:102400} KeyVal:map[bytesDownloaded:102400]}
[step-2][getfiles.con_err_stage.*main.downloadStep]: Started downloading file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: Successfully downloaded file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: end
[stage-0][stage]: end
[stage-1][con_stage]: begin
[stage-1][con_stage]: is concurrent
[step-0][getfiles.con_stage.*main.downloadStep]: begin
[step-1][getfiles.con_err_stage.*main.downloadStep]: begin
[step-2][getfiles.con_err_stage.*main.downloadStep]: begin
[step-2][getfiles.con_err_stage.*main.downloadStep]: &{Data:{bytesDownloaded:102400} KeyVal:map[bytesDownloaded:102400]}
[step-2][getfiles.con_err_stage.*main.downloadStep]: &{Data:{bytesDownloaded:102400} KeyVal:map[bytesDownloaded:102400]}
[step-2][getfiles.con_err_stage.*main.downloadStep]: Started downloading file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: Started downloading file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: &{Data:{bytesDownloaded:102400} KeyVal:map[bytesDownloaded:102400]}
[step-2][getfiles.con_err_stage.*main.downloadStep]: Started downloading file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: Successfully downloaded file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: end
[step-2][getfiles.con_err_stage.*main.downloadStep]: Successfully downloaded file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: end
[step-2][getfiles.con_err_stage.*main.downloadStep]: Successfully downloaded file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: end
[stage-1][con_stage]: end
[stage-2][con_err_stage]: begin
[stage-2][con_err_stage]: is concurrent
[step-0][getfiles.con_err_stage.*main.downloadStep]: begin
[step-1][getfiles.con_err_stage.*main.downloadStep]: begin
[step-2][getfiles.con_err_stage.*main.downloadStep]: begin
[step-2][getfiles.con_err_stage.*main.downloadStep]: &{Data:<nil> KeyVal:map[]}
[step-2][getfiles.con_err_stage.*main.downloadStep]: Started downloading file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: &{Data:<nil> KeyVal:map[]}
[step-2][getfiles.con_err_stage.*main.downloadStep]: Started downloading file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: &{Data:<nil> KeyVal:map[]}
[step-2][getfiles.con_err_stage.*main.downloadStep]: Started downloading file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: Successfully downloaded file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: end
[step-2][getfiles.con_err_stage.*main.downloadStep]: Successfully downloaded file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: end
[step-2][getfiles.con_err_stage.*main.downloadStep]: Successfully downloaded file 10mbfile
[step-2][getfiles.con_err_stage.*main.downloadStep]: end
[stage-2][con_err_stage]: end
[pipeline][getfiles]: end
timeTaken: 9.252079992s
Looking at the source code, I found that the stage.run() function uses closure functions, which I guess is where the bug came from.
// Run the stage execution sequentially
func (st *Stage) run(request *Request) *Result {
if len(st.Steps) == 0 {
return &Result{Error: fmt.Errorf("No steps to be executed")}
}
st.status("begin")
defer st.status("end")
if st.Concurrent {
st.status("is concurrent")
g, ctx := withContext(context.Background())
for _, step := range st.Steps {
step.Status("begin")
g.run(func() *Result {
defer step.Status("end")
//disables strict mode. g.run will wait for all steps to finish
if st.DisableStrictMode {
return step.Exec(request)
}
from pipeline.
Have you solved it?
from pipeline.
Related Issues (6)
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from pipeline.