I have code that basicaly looks like this:

someFlow.collect {
  Log.d(TAG, ">")
  // Some stuff
  Log.d(TAG, "<")
}

So, I should in Android's logcat alternating arrows going left and right. And in most cases, I do. But on some rare occasions, I see 2 going right and 2 going left. Any idea why that might happen?!

two possible answers that i can think of. First, ‘some stuff’ is cancellable, and you have some ‘latest’ operator above in the chain. Or second, the logcat is not reliable and messes the order sometimes.

Hmm, ther is actualy

conflate

above the

collect

. But, it shouldn't cause the cancelation, no?

yes, it may be possible logcagt messes up the order

Good idea with those timestamps! Gonna try it. But I'm afraid logging is correc, because when this "glitch" happens, I see actual error in displayed data in my app.

try to verify these logs come from the same coroutine:

someFlow.collect {
  val identity = Random.nextInt()
  Log.d(TAG, "> $identity")
  // Some stuff
  Log.d(TAG, "< $identity")
}

Maybe helpful to have a second one outside the collect call, to show they are from the same flow you are collecting from.

yes, as Yuri said, this one will show you the full picture:

val identity = Random.nextInt()
someFlow.collectIndexed { index, value ->
  Log.d(TAG, "> $identity => $index")
  // Some stuff
  Log.d(TAG, "< $identity => $index")
}