Azure function is invoked but the code is never executed

_From @dixitsuneel on November 20, 2017 18:40_

I can see in the monitoring log that the azure function is getting invoked.
But the code never receives the control for execution.

But if I hit the same http request to the function multiple times, then it starts working correctly after couple of tries.

I know that the control is never received by my code as the first line I have in my function app is context.log.info and that doesn't get executed.

What do we have to do to fix the issue?

Here's the screen shot where you can see multiple requests not completing and the logs section is empty for the selected request(2nd from the top)

Here's the screen shot of the first request which completed and you can see the log

I have also added global exception handling, just in case there is an exception then that method will terminate the context with an error.

Here's the code for the same
process.on('uncaughtException', function (err) {
context.log.error(err);
context.done(err);
});
There is no logging at all. Please help

_Copied from original issue: Azure/Azure-Functions#601_