Heartbeat thread working with lambda

[nitika-bansal]

Hi,

I was looking for implementing the DDB lock client inside a lambda. As per the lambda documentation here,

After the function and all extensions have completed, Lambda maintains the execution environment for some time in anticipation of another function invocation. In effect, Lambda freezes the execution environment. When the function is invoked again, Lambda thaws the environment for reuse.

So here, I wanted to understand, how does the heartbeat BG thread works in case of any lambda failure/timeout. Is it safe to assume that background thread will die as well, or it might be the case as it says in the documentation here, that if another lambda is executed in the same context, heartbeat thread might continue it's execution from there.

[jsommr]

+1. Would like to know if it's safe to use the java locking client in a lambda, since we don't use java elsewhere.