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The Parallel Branch doesn't at all #18783

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opened 2026-02-21 19:51:51 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 19:51:51 -05:00
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Originally created by @dickens88 on GitHub (Oct 3, 2025).

Self Checks

  • I have read the Contributing Guide and Language Policy.
  • This is only for bug report, if you would like to ask a question, please head to Discussions.
  • I have searched for existing issues search for existing issues, including closed ones.
  • I confirm that I am using English to submit this report, otherwise it will be closed.
  • 【中文用户 & Non English User】请使用英语提交，否则会被关闭 ：）
  • Please do not modify this template :) and fill in all the required fields.

Dify version

1.9.1

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

Hi,

I found it seems there are some new feature about Parallel Branch, they called it Queue-based Graph Engine.

But after i upgraded to 1.9.1 I found that parallel execution no longer exists; all branches have become serial. Anyone knows what's the matter there?

Image

✔️ Expected Behavior

The branches should work in a parallel way, just like it worked since v0.8.0
https://dify.ai/blog/accelerating-workflow-processing-with-parallel-branch

❌ Actual Behavior

all branches have become serial

Originally created by @dickens88 on GitHub (Oct 3, 2025). ### Self Checks - [x] I have read the [Contributing Guide](https://github.com/langgenius/dify/blob/main/CONTRIBUTING.md) and [Language Policy](https://github.com/langgenius/dify/issues/1542). - [x] This is only for bug report, if you would like to ask a question, please head to [Discussions](https://github.com/langgenius/dify/discussions/categories/general). - [x] I have searched for existing issues [search for existing issues](https://github.com/langgenius/dify/issues), including closed ones. - [x] I confirm that I am using English to submit this report, otherwise it will be closed. - [x] 【中文用户 & Non English User】请使用英语提交，否则会被关闭 ：） - [x] Please do not modify this template :) and fill in all the required fields. ### Dify version 1.9.1 ### Cloud or Self Hosted Self Hosted (Docker) ### Steps to reproduce Hi, I found it seems there are some new feature about Parallel Branch, they called it Queue-based Graph Engine. But after i upgraded to 1.9.1 I found that parallel execution no longer exists; all branches have become serial. Anyone knows what's the matter there? <img width="728" height="572" alt="Image" src="https://github.com/user-attachments/assets/ed764042-f161-4783-959c-891067b0101c" /> ### ✔️ Expected Behavior The branches should work in a parallel way, just like it worked since v0.8.0 https://dify.ai/blog/accelerating-workflow-processing-with-parallel-branch ### ❌ Actual Behavior all branches have become serial
yindo added the 🐞 bugstale🌊 feat:workflow labels 2026-02-21 19:51:51 -05:00
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Reference: langgenius/dify#18783
Delete Branch "%!s()"

Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?