Aws already has auto scale flink cluster it’s called Kinesis Data Analytics just add your flink Jar to Kinesis Sql analytics that’s all , aws will auto provision a flink cluster and do the admin part for you.
On Saturday, September 28, 2019, David Anderson <da...@ververica.com> wrote: > I believe there can be advantages and disadvantages in both > directions. For example, fewer containers with multiple slots reduces > the effort the Flink Master has to do whenever global coordination is > required, i.e., during checkpointing. And the network stack in the > task managers is optimized to take advantage of locality, whenever > possible. > > On the other hand, if you have a lot of pressure on the heap (e.g., > because you are using a heap-based state backend), then having more, > smaller task managers can reduce latency by reducing the impact of > garbage collection pauses. > > I'm sure I've overlooked some factors, but the bottom line appears to > be that there's no one-size-fits-all answer. > > David > > On Wed, Sep 25, 2019 at 5:43 PM Navneeth Krishnan > <reachnavnee...@gmail.com> wrote: > > > > Thanks Terry, the reason why I asked this is because somewhere I saw > running one slot per container is beneficial. I couldn’t find the where I > saw that. > > Also I think running it with multiple slots will reduce IPC since some > of the data will be processed writhing the same JVM. > > > > Thanks > > > > On Wed, Sep 25, 2019 at 1:16 AM Terry Wang <zjuwa...@gmail.com> wrote: > >> > >> Hi, Navneeth, > >> > >> I think both is ok. > >> IMO, run one container with number of slots same as virtual cores may > be better for slots can share the Flink Framework and thus reduce memory > cost. > >> > >> Best, > >> Terry Wang > >> > >> > >> > >> > 在 2019年9月25日，下午3:26，Navneeth Krishnan <reachnavnee...@gmail.com> 写道： > >> > > >> > Hi All, > >> > > >> > I’m currently running flink on amazon ecs and I have assigned task > slots based on vcpus per instance. Is it beneficial to run a separate > container with one slot each or one container with number of slots same as > virtual cores? > >> > > >> > Thanks > >> > -- Thanks & Regards Sri Tummala
