/var/lang/bin/node[8]: ../src/spawn_sync.cc:460:v8::Maybe<bool> node::SyncProcessRunner::TryInitializeAndRunLoop(v8::Local<v8::Value>): Assertion `(uv_loop_init(uv_loop_)) == (0)' failed. #34855

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1. rickyes commented on Aug 20, 2020

   

   rickyes

   on Aug 20, 2020

   Contributor

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   Hi, @ragorepo. Can you provide the specific code? By the way, a good title can make it easier for everyone to see issues related to their interests.
2. Ra-works commented on Aug 20, 2020

   

   Ra-works

   on Aug 20, 2020

   Last edited by Ra-works

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   Hi, @ragorepo. Can you provide the specific code? By the way, a good title can make it easier for everyone to see issues related to their interests.

   Thanks @rickyes for the reply. I tried to search related issues for last few days but no luck. This appears to be specific issue. Unable to comeup with better title rather than the exception itself.

   Unfortunately despite keeping multiple log statements unable to comeup with exact location where the runtime error happening.

   I could drill down to this code below:
   ..
   ...
   ....

      const asyncClientApi = (request) => new Promise((resolve, reject) => clients.startLinking(request, (error, linkingResponse) => {
           if( error != null ) {
               log.info("connection failed ", error);
               reject( error );
           }
           resolve({"error": error, "linkingResponse": linkingResponse});
   
       }));
   

       let {error, linkingResponse} = await asyncClientApi(request);
   

   ...
   ..

   Please note the error is not caught or rejected. It is occurring as runtime and AWS Lambda is getting aborted.

   I have upgraded nodejs versions and still the issue reproducable.

   Unable to figure out the rootcause/reason with the error.
3. bnoordhuis commented on Aug 20, 2020

   

   bnoordhuis

   on Aug 20, 2020

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   I'm fairly sure AWS Lambda uses a custom build of Node.js so you should probably report this to them.

   If you can also reproduce with a node binary from https://nodejs.org/, please fill out the issue template and include steps to reproduce.
4. bnoordhuis

   added a commit that references this issue on Aug 22, 2020

   src: fix abort on uv_loop_init() failure

   ...

   053aa8d
5. bnoordhuis commented on Aug 22, 2020

   

   bnoordhuis

   on Aug 22, 2020

   Member

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   #34874 - it won't fix running out of resources but it will fix the abrupt termination. You'll get a regular exception instead.
6. Trott

   closed this as completedin b8ab49fon Aug 24, 2020
7. danielleadams

   added a commit that references this issue on Aug 25, 2020

   src: fix abort on uv_loop_init() failure

   ...

   fff1e7f
8. MayaLekova

   added a commit that references this issue on May 22, 2026

   src: fix abort on uv_loop_init() failure

   ...

   b8ab49f