Good question... There was a security problem earlier and to address that we removed it from ContainerLaunchContext.
Today if you check the payload we are sending Container which contains ContainerToken. ContainerToken is the secured channel for RM to tell NM about 1) ContainerId 2) Resource 3) User 4) NodeId It is present there by default (irrespective of security). I hope it answers your doubt. Thanks, Omkar Joshi *Hortonworks Inc.* <http://www.hortonworks.com> On Wed, Sep 4, 2013 at 2:51 AM, Janne Valkealahti < janne.valkeala...@gmail.com> wrote: > With 2.0.x ContainerId was part of the ContainerLaunchContext and I assume > container id was then used to identify what node manager would actually > start. > > With 2.1.x ContainerId was removed from ContainerLaunchContext. > ContainerManagementProtocol is only using a list of StartContainerRequest > which have ContainerLaunchContext and Token. > > My first question is that if you have different ContainerLaunchContext(i.e. > command, env variables, etc), how do you know which container is launched > with which launch context? > > My second question is how node manager is assosiating allocated > container(which you requested from resource manager) to > ContainerLaunchContext? > -- CONFIDENTIALITY NOTICE NOTICE: This message is intended for the use of the individual or entity to which it is addressed and may contain information that is confidential, privileged and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any printing, copying, dissemination, distribution, disclosure or forwarding of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and delete it from your system. Thank You.
