It is not as easy. To understand it well I would recommend going through
the docs. In short slots do not equal thread/core it is just an
abstraction over a share of resources.
For you setup: It is true there will be 3 jvms each will be assigned 2
vcores ( by default it is equal to slot per taskamanger if you don't
overwrite it with), but each of the jvm will have multiple threads.
> Let's assume I have yarn cluster with 3 nodes, 3 vcores each nodes. So total
> available cores = 9
> Now if I spin a flink job with taskmanager = 3 and no. of slots per task
> manager = 2 ,what will happen :
> 1. 3 Jvms will be initiated (for each task manager)
> 2. Each JVM will run 2 threads for tasks .
> 3. Will each thread will use 1 vcore from yarn or both threads will share
> same vcore ??
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