Hello Bjorn, Welcome to Myriad. Few questions that could help to help you. 1. Do you just have pending tasks and you never get any active ones?2. Do you have some active and some pending tasks?3. Are your pending tasks all NMs? If [1] - could you look at RM log (should be accessible from Mesos console) whether there is enough resources to start the tasks - because if not they will remain pending.If [2] - we start one NM per hostname per Myriad framework, so second NM will not start unless first one goes away In any case it is best to look at RM log for clues. Thanks,Yuliya
From: Björn Hagemeier <b.hageme...@fz-juelich.de> To: Myriad Dev <dev@myriad.incubator.apache.org> Sent: Friday, February 19, 2016 2:01 AM Subject: Pending Flex Up Tasks Hi all, I am very new to Myriad, but also to Mesos and Yarn. I am having trouble with pending flex up tasks, for which I cannot see any further information. Thus, I do not even have the faintest idea where to start debugging. I can easily run frameworks in my Mesos cluster, but Yarn NMs are a different issue. My idea was to use package installations of NM on the slave nodes, if that is possible (?). The documentation mentions sth. about remote distribution, but from the wording it seems to be more of an option than a requirement. Packages have been installed and customized (myriad configuration) via Puppet and I'd very much like to stay with this. Anyhow, please let me know the possible causes of flex up tasks remaining in the pending state. I can easily flex them down and thus remove the pending tasks, but I never get them into active. Any hint is very much appreciated. Best regards, Björn -- Dipl.-Inform. Björn Hagemeier Federated Systems and Data Juelich Supercomputing Centre Institute for Advanced Simulation Phone: +49 2461 61 1584 Fax : +49 2461 61 6656 Email: b.hageme...@fz-juelich.de Skype: bhagemeier WWW : http://www.fz-juelich.de/jsc JSC is the coordinator of the John von Neumann Institute for Computing and member of the Gauss Centre for Supercomputing ------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------- Forschungszentrum Juelich GmbH 52425 Juelich Sitz der Gesellschaft: Juelich Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498 Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher Geschaeftsfuehrung: Prof. Dr.-Ing. Wolfgang Marquardt (Vorsitzender), Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt, Prof. Dr. Sebastian M. Schmidt ------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------