Re: Behavior of Ignite during PME on new nodes added to the cluster

2019-05-10 Thread Evangelos Morakis
Dear Ivan, Thank you for your reply this clarifies the mater for me. Kind regards Dr. Evangelos Morakis Software Architect > On 8 May 2019, at 09:00, Ivan Pavlukhina wrote: > > Evangelos, > > Thank you for your feedback! > > Regarding your questions: > 1. Sounds quite widely. To avoid

Re: Behavior of Ignite during PME on new nodes added to the cluster

2019-05-08 Thread Ivan Pavlukhina
Evangelos, Thank you for your feedback! Regarding your questions: 1. Sounds quite widely. To avoid misunderstanding I try to give a general hint only. Actually a decision to rebalance data or not is made after PME. So, it is true that not every PME leads to a rebalance. (one more example when

Re: Behavior of Ignite during PME on new nodes added to the cluster

2019-05-03 Thread Evangelos Morakis
Dear Ivan, Thank you very much for you comprehensive answer, may I just say that ignite is definitely my favorite “beast” amongst the existing solutions due to its versatility and the power it delivers when it comes to designing complex distributed solutions as in my specific use case. In

Re: Behavior of Ignite during PME on new nodes added to the cluster

2019-05-03 Thread Павлухин Иван
Hi Evangelos and Matt, As far as know there were issues with a join of a client node in previous Ignite versions. In new versions a joining client should not cause any spikes. In fact PME is (unfortunately) a widely known beast in the Ignite world. Fundamentally PME can (and should) perform

Re: Behavior of Ignite during PME on new nodes added to the cluster

2019-04-24 Thread Evangelos Morakis
Matt thank you for your reply, Indeed I saw your question too yesterday. In regards to points 3-4 of my question I suppose that as you mention, if one shuts down gracefully the client node and if the number of threads responsible for rebalancing the data gets tweaked, then I guess the amount

Re: Behavior of Ignite during PME on new nodes added to the cluster

2019-04-24 Thread MattNohelty
I have these same questions and posted about this yesterday (http://apache-ignite-users.70518.x6.nabble.com/What-happens-when-a-client-gets-disconnected-td27959.html). Based on my understanding: 1) Yes, PME will always happen when a server node joins 2) This is my biggest question. I'm

Behavior of Ignite during PME on new nodes added to the cluster

2019-04-24 Thread Evangelos Morakis
Hi everyone, We are currently using ignite 2.7 and I have some basic questions in regards to ignite’s behavior during PME. After referring to ignite’s documentation and the cwiki’s section about PME(partition map exchange under the hood) the following has been made apparent. When a new node