|Check that you have slaves and masters set correctly on all machines, and in particular the one submitting jobs. Make sure that from the machine submitting the job that it is talking to the correct job manager (jobmanager.rpc.address). It really sounds like you are some how submitting jobs to only one taskmanager.|
You should also use jps to verify that you only have one jobmanager running and the worker machines only have taskmanager running.
So what should the correct configs be then?
I have set numOfSlotsPerTaskManager = 8. Which is reasonable as each has 8 cpus.
You need to verify your configs are correct. Check that the local machine sees all the task managers, that is the most likely reason it will reject a higher parallelism. I use a java program to submit to a 3 node 18 slot cluster without issue on a job with 18 parallelism. I have not used the command line to do this however.
> On Apr 26, 2018, at 11:16 AM, m@xi <makisntpap@xxxxxxxxx> wrote:
> No man. I have 17 TaskManagers and each has a number of 8 slots.
> Do you think it is better to have 8 TaskManager (1 slot each) ?
> Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/