Re: [DISCUSSION] API to KILL any user started computation

2020-01-17 Thread Николай Ижиков
Hello, Andrey. Thanks for positive feedback. Appreciate it. > we can't cancel service or service's method I understand it. Seems, we have several obvious options here: * Try to do it and if fail answer to the user: «I’ve tried and fail. Sorry» * Kill hanging thread. > This invocations not reg

Re: [DISCUSSION] API to KILL any user started computation

2020-01-17 Thread Andrey Gura
It would be grate. Only one comment: we can't cancel service or service's method execution because service grid API doesn't imply any requirement to service implementation. So if user do something like infinite cycle or blocking but non-interruptible operation it's impossible to interrupt it. Also

Re: [DISCUSSION] API to KILL any user started computation

2020-01-17 Thread Вячеслав Коптилин
Hi Alexei, > Not sure I've understand a question. JMX supports security via password protection and secure channel. That is the obvious thing I missed! :) Thank you! Thanks, S. пт, 17 янв. 2020 г. в 14:45, Alexei Scherbakov : > Slava, > > Not sure I've understand a question. JMX supports securi

Re: [DISCUSSION] API to KILL any user started computation

2020-01-17 Thread Alexei Scherbakov
Slava, Not sure I've understand a question. JMX supports security via password protection and secure channel. пт, 17 янв. 2020 г. в 14:30, Вячеслав Коптилин : > Hello Nikolay, > > I'm not sure we need JMX API for this case. If I’m not mistaken, it’s about > the administrator’s ability to cancel

Re: [DISCUSSION] API to KILL any user started computation

2020-01-17 Thread Вячеслав Коптилин
Hello Nikolay, I'm not sure we need JMX API for this case. If I’m not mistaken, it’s about the administrator’s ability to cancel any task/query in the cluster, and in my opinion, such action must require administrator permission. Could you please clarify how it can be done via JMX? I mean permissi

Re: [DISCUSSION] API to KILL any user started computation

2020-01-16 Thread Alexei Scherbakov
Sounds good. JMX API should be very similar: accept operation type and ID. чт, 16 янв. 2020 г. в 15:46, Николай Ижиков : > Alexey. > > I think, yes. > We certainly should be able to use system view data for the new KILL API. > > I think we should support both SQL and Java(JMX) API for this KILL

Re: [DISCUSSION] API to KILL any user started computation

2020-01-16 Thread Николай Ижиков
Alexey. I think, yes. We certainly should be able to use system view data for the new KILL API. I think we should support both SQL and Java(JMX) API for this KILL command. > 16 янв. 2020 г., в 15:28, Alexei Scherbakov > написал(а): > > Nikolaj, > > Can we use system views instead of impleme

Re: [DISCUSSION] API to KILL any user started computation

2020-01-16 Thread Alexei Scherbakov
Nikolaj, Can we use system views instead of implementing something new ? Each user operation has an unique ID. It's possible to introduce universal SQL kill something like: kill transaction ID where id is taken from system view. чт, 16 янв. 2020 г. в 14:19, Николай Ижиков : > Hello, Alexey.

Re: [DISCUSSION] API to KILL any user started computation

2020-01-16 Thread Николай Ижиков
Hello, Alexey. I’m talking about *administrator* API. For example, the User has a cluster that is used by several applications. Some application starts buggy compute tasks that consume all CPU resources. Right now, administrator doesn’t have the ability to kill this task. This can lead to instab

Re: [DISCUSSION] API to KILL any user started computation

2020-01-16 Thread Alexei Scherbakov
Transactions can be also rolled back using tx.close where close is java.lang.AutoCloseable#close It looks for me to the definition of uniform cancel API. чт, 16 янв. 2020 г. в 13:37, Alexei Scherbakov : > Nikolaj, > > We already have cancellation possibilities for almost every user > computatio

Re: [DISCUSSION] API to KILL any user started computation

2020-01-16 Thread Alexei Scherbakov
Nikolaj, We already have cancellation possibilities for almost every user computation. Transactions are cancelled using tx.rollback() Queries are cancelled using query.close() Task is cancellable through ComputeTaskSession What is uniform cancel API ? Why do we need it ? ср, 15 янв. 2020 г. в

[DISCUSSION] API to KILL any user started computation

2020-01-15 Thread Николай Ижиков
Hello, Igniters. As you may know, we put a lot of effort to improve Ignite metric and diagnostic API. We have created the following API: * Metric manager * System view manager As far as I know, we would have tracing capabilities soon. I think it's time to take the next step. We should pr