remote ssh but 'python extension loading' forever

[PeterJaq]

Environment data

• VS Code version: 1.41.0 (but not only on this version)
• Extension version (available under the Extensions sidebar): 2019.11.50794
• OS and version: Windows 10 1909
• Python version (& distribution if applicable, e.g. Anaconda): Anaconda Python 3.7
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): conda
• Jedi or Language Server? (i.e. what is "python.jediEnabled" set to; more info How to update the language server to the latest stable version #3977): MircoSoft Language Server

Expected behaviour

Vscode connect to python extension which on remote server

Actual behaviour

python loading extension forever

Logs

User belongs to experiment group 'ShowPlayIcon - start'
User belongs to experiment group 'AA_testing - experiment'
> conda --version
> pyenv root
> python3.7 -c "import sys;print(sys.executable)"
> python3.6 -c "import sys;print(sys.executable)"
> python3 -c "import sys;print(sys.executable)"
> python2 -c "import sys;print(sys.executable)"
> python -c "import sys;print(sys.executable)"
> ~/.conda/envs/hmm-ml/bin/python -c "import sys;print(sys.executable)"
> conda info --json
> conda env list
> conda env list
Starting Microsoft Python language server.

Output from Console under the Developer Tools panel :

[Extension Host] Info Python Extension: 2019-12-13 10:28:03: Rule = settings, result = runNextRule
console.ts:137 [Extension Host] Info Python Extension: 2019-12-13 10:28:03: Executing next rule from settings
console.ts:137 [Extension Host] Info Python Extension: 2019-12-13 10:28:03: Rule = workspaceEnvs, result = runNextRule
console.ts:137 [Extension Host] Info Python Extension: 2019-12-13 10:28:03: Executing next rule from workspaceEnvs
console.ts:137 [Extension Host] Info Python Extension: 2019-12-13 10:28:03: Cached data exists getEnvironmentVariables, extension-output-#2
console.ts:137 [Extension Host] Info Python Extension: 2019-12-13 10:28:03: Cached data exists getEnvironmentVariables, extension-output-#1
console.ts:137 [Extension Host] Info Python Extension: 2019-12-13 10:28:03: Cached data exists getEnvironmentVariables, tasks
console.ts:137 [Extension Host] Info Python Extension: 2019-12-13 10:28:03: autoSelectInterpreter, Class name = f, completed in 11ms, Arg 1: <Uri:tasks>, Return Value: undefined
console.ts:137 [Extension Host] Info Python Extension: 2019-12-13 10:28:03: Get Interpreters in CacheableLocatorService, Class name = g, completed in 10ms, Arg 1: <Uri:tasks>, Return Value: []
2console.ts:137 [Extension Host] Info Python Extension: 2019-12-13 10:28:03: autoSelectInterpreter, Class name = f, completed in 11ms, Arg 1: <Uri:tasks>, Return Value: undefined
console.ts:137 [Extension Host] Info Python Extension: 2019-12-13 10:28:03: Checking support of .NET, Class name = c, completed in 2ms, , Return Value: true
console.ts:137 [Extension Host] Info Python Extension: 2019-12-13 10:28:03: Build the workspace interpreter watcher, Class name = h, completed in 3ms, Arg 1: <Uri:tasks>, Return Value: <Return value cannot be serialized for logging>
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] reconnected!
log.ts:196   ERR Object has been destroyed: Error: Object has been destroyed
    at WebContents.send (D:\Microsoft VS Code\resources\electron.asar\browser\api\web-contents.js:102:17)
    at IpcMain.<anonymous> (D:\Microsoft VS Code\resources\app\out\vs\code\electron-main\main.js:502:823)
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] starting reconnecting loop. You can get more information with the trace log level.
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] waiting for 5 seconds before reconnecting...
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] resolving connection...
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] connecting to 127.0.0.1:50704...
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] reconnected!
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] starting reconnecting loop. You can get more information with the trace log level.
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] waiting for 5 seconds before reconnecting...
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] resolving connection...
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] connecting to 127.0.0.1:50704...
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] reconnected!
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] starting reconnecting loop. You can get more information with the trace log level.
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] waiting for 5 seconds before reconnecting...
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] resolving connection...
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] connecting to 127.0.0.1:50704...
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] reconnected!
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] starting reconnecting loop. You can get more information with the trace log level.
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] waiting for 5 seconds before reconnecting...
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] resolving connection...
log.ts:184  INFO [remote-connection][ExtensionHost][3a85d…][reconnect] connecting to 127.0.0.1:50704...

[PeterJaq]

By the way, the extension works well on my Mac.
This issue happened on both two windows 1909 PC.

[IcarusWizard]

I have the same issue on my Windows 1903. What I observe is that when the python extension is loading, two machines establish unreasonable network traffic of about 70Mb/s through ssh (which is close to my network bandwidth). I think the data they are exchanging is the key to this issue.

[ChopinSharp]

Same problem here (Python extension + Remote extension) ...
It's really frustrating. Any updates or workarounds? Or I have to switch back to use Pycharm Deployment ...

[PeterJaq]

Same Situation, also switch back to use Pycharm

[ChopinSharp]

It seems to be a compatibility problem. After removing all other extensions leaving only the Remote and Python extension, everything works fine.

[IcarusWizard]

@ChopinSharp You mean removing any other extension on both side or just remote server?

[brettcannon]

@ChopinSharp any chance you can turn on your other extensions slowly and let us know which combination seems to cause the issue for you? That way we can figure out if it's on our side or the other extension.

[IcarusWizard]

@brettcannon Hi Brett. I have tried your advice. I unstalled every extension and reinstall them one by one. Everything works like a charm for now, which is wired. Maybe there is a hidden bug that we fail to find.

Here is something I observed which may help you identify what's wrong:

• The Python Output Log change
  After I reinstall everything, my Log shows:

User belongs to experiment group 'ShowPlayIcon - start'
User belongs to experiment group 'ShowExtensionSurveyPrompt - control'
User belongs to experiment group 'AA_testing - control'
Starting Microsoft Python language server.
> conda --version
> pyenv root
> python3.7 -c "import sys;print(sys.executable)"
> python3.6 -c "import sys;print(sys.executable)"
> python3 -c "import sys;print(sys.executable)"
> python2 -c "import sys;print(sys.executable)"
> python -c "import sys;print(sys.executable)"
> ~/anaconda2/envs/torch/bin/python -c "import sys;print(sys.executable)"
> ~/anaconda2/bin/conda info --json
> ~/anaconda2/bin/conda env list
> ~/anaconda2/bin/conda env list

I am pretty sure, there were some commands like ..../.vscode-server/...../interpretion.py for every conda enviroment on my server. I do not keep the old logs, maybe the name was wrong.

• Upstream network traffic goes away
  Before I reinstall, the upstream traffic and downstream traffic were basically the same on my local machine. But now, only downstream traffic remains, which is reasonable for the local machine to drag the cache from the server. My theory is there were services on both sides who want to send the data for the other to process. So they form a data exchanging dead loop.

[Bebotron]

I have the same issue of python extension loading forever, and when I try to open a remote jupyter notebook, it never renders. I can open .py files and syntax highlights just fine, but .ipynb files don't open. Is this related to #5676 or #5691? It doesn't seem like there was a solution but it wasn't too clear, and they're closed so I'm asking here, sorry if it's a bit of a deviation. I get this from Toggle Developer Tools

Version: 1.41.0 (system setup)
Commit: 9579eda04fdb3a9bba2750f15193e5fafe16b959
Date: 2019-12-11T17:59:52.065Z
Electron: 6.1.5
Chrome: 76.0.3809.146
Node.js: 12.4.0
V8: 7.6.303.31-electron.0
OS: Windows_NT ia32 10.0.18362

[ChopinSharp]

@ChopinSharp You mean removing any other extension on both side or just remote server?

On both sides.

[ChopinSharp]

@ChopinSharp any chance you can turn on your other extensions slowly and let us know which combination seems to cause the issue for you? That way we can figure out if it's on our side or the other

Sorry, but I can't remember what extention I had installed.

[brettcannon]

@Bebotron that's a potentially separate issue, so please open a separate bug.

@IcarusWizard thanks for at least trying and we're glad your issue (magically) got resolved!

@ChopinSharp no problem. I'm going to close this issue since no one seems to know how to reproduce it. But if it comes up again and you can provide a reproducer then please feel free to open a another issue.