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The number of incoming connections has exceeded the maximum - Union tool

amrutkasyap
7 - Meteor

We have a workflow that was working on version 2021.X. The laptop that the workflow was on was upgraded and also a new version of Alteryx, 2022.1, was installed. Since then getting an error as below. Installed 2021.3 version of Alteryx but still getting the same error. Any suggestions or tips are most welcome.

4 REPLIES 4
DavidSkaife
13 - Pulsar

Hi @amrutkasyap 

 

2022.1 was the first time the AMP engine was enabled by default, can you try disabling it and seeing if the workflow runs?

 

DavidSkaife_0-1666968631579.png

 

 

amrutkasyap
7 - Meteor

Thanks David that worked

DavidSkaife
13 - Pulsar

No problem @amrutkasyap 

 

@TonyaS is this one for you to be made aware of?

TonyaS
Alteryx
Alteryx

Thanks for tagging me @DavidSkaife 

 

I am confused @amrutkasyap , did someone create a new workflow on 22.1? AMP was only turned ON by default for NEW workflows built with 22.1, we are not forcing any previous workflows to run with AMP if they were built in previous versions and did not have AMP enabled. 

 

This is not a defect. 

This 32 connection limit is documented in our AMP Tools documentation and it was done to prevent memory deadlocking with AMP parallel processing. 

https://help.alteryx.com/20221/designer/tool-use-amp 

 

This limit is set for the Union and Join Multiple tools. 

TonyaS_0-1666984589857.png

 

Here are more links related to AMP in case you are interested:

 

Help Documentation

https://help.alteryx.com/current/designer/alteryx-amp-engine

https://help.alteryx.com/current/designer/Alteryx-Engine-and-AMP-Main-Differences

https://help.alteryx.com/current/designer/AMP-Memory-Use

https://help.alteryx.com/current/designer/tool-use-amp

https://help.alteryx.com/20221/designer/engine-compatibility-mode

https://help.alteryx.com/20221/designer/performance-profiling-amp-engine

https://help.alteryx.com/20221/server/amp-engine-best-practices

 

•AMP Engine Webinar (32 minutes)

https://community.alteryx.com/t5/Analytics/AMP-Engine-Discover-the-Untapped-Performance-of-Your-Anal...

 

•AlterEverything Podcast

https://community.alteryx.com/t5/Alter-Everything-Podcast/66-The-Alteryx-AMP-Engine-Explained/ba-p/5...

 

•Community Blog posts

https://community.alteryx.com/t5/Analytics/Accelerate-Your-Analytic-Processes-with-the-New-AMP-Engin...

https://community.alteryx.com/t5/Engine-Works/AMPlify-your-Workflows/ba-p/617590

https://community.alteryx.com/t5/Alteryx-Designer-Discussions/Best-practice-with-the-new-Multi-threa...

https://community.alteryx.com/t5/Engine-Works/AMP-Engine-Technical-Deep-Dive-Part-1-Why-AMP/ba-p/570...  

https://community.alteryx.com/t5/Engine-Works/AMP-Engine-Technical-Deep-Dive-Part-2-Key-concepts-of-...  

 

Tonya Smith
Sr. Technical Product Manager, cloud App Builder
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