Async workflow try/catch block not working as expected

Hi all, I have a workflow I run asynchronously that sort of (very simplified) looks like this:

try {

 foreach(feature in myFeatures) {
   try {
     doStuff(feature)
       }catch(Exception ex) {
       } 
  }
}catch (Exception ex) {
 
}

the idea being, if doStuff(feature) throws an exception, I catch that exception, handle it in the inner catch block (logging etc.), and then continue the foreach loop with the next feature.

Unfortunately, although I do catch the exception in the inner catch block, the loop does not continue and my workflow goes to the outer catch block and terminates. I am not (re)throwing the exception, so why does that happen?

I think this was working correctly when I ran my workflow normally instead of via an Invoke Workflow Async activity (from a different workflow), which just makes this even stranger...

Anyone know what's going on here?

Gareth Evans

January 08, 2019 00:56

Hi Nik

I suspect this is to do with the fact that the workflow is being run asynchronously. Can you confirm if you see the same issue calling the workflow normally?

A potential workaround would be to break out the inner loop into it's own workflow, so each instance can succeed/fail without bringing down the whole caller.

Thanks

Gareth

Async workflow try/catch block not working as expected

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