Thank you! On Thu, Jun 20, 2019, 5:49 AM Chesnay Schepler <ches...@apache.org> wrote:
> There is no version of the documentation that is more up-to-date. The > documentation was simply not updated yet for the new architecture. > > On 20/06/2019 11:45, Pankaj Chand wrote: > > Based on the below conversation (reverse chronological order) regarding my > previous question on the role of Job Manager in Flink: > > > Hi Biao, > > Thank you for your reply! > > Please let me know the url of the updated Flink documentation. > > The url of the outdated document is: > > https://ci.apache.org/projects/flink/flink-docs-release-1.8/concepts/runtime.html > > > Another page which (tacitly) supports the outdated concept is: > > https://ci.apache.org/projects/flink/flink-docs-stable/internals/job_scheduling.html > > > The website that hosts these pages is also the first result that comes up > when you Google Search for "Flink documentation", and it claims it is a > stable version. The url is: > https://ci.apache.org/projects/flink/flink-docs-stable/ > > Again, please let me know the url of the updated Flink documentation. > > Thank you Biao and Eduardo! > > Pankaj > Hide quoted text > > On Tue, Jun 18, 2019 at 11:49 PM Biao Liu <mmyy1...@gmail.com> wrote: > > Hi Pankaj, > > That's really a good question. There was a refactor of architecture > before[1]. So there might be some descriptions used the outdated concept. > > Before refactoring, Job Manager is a centralized role. It controls whole > cluster and all jobs which is described in your interpretation 1. > > After refactoring, the old Job Manager is separated into several roles, > Resource Manager, Dispatcher, new Job Manager, etc. The new Job Manager is > responsible for only one job, which is described in your interpretation 2. > > So the document you refer to is outdated. Would you mind telling us the > URL of this document? I think we should update it to avoid misleading more > people. > > 1. > https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=65147077 > > Eduardo Winpenny Tejedor <eduardo.winpe...@gmail.com> 于2019年6月19日周三 > 上午1:12写道： > > Hi Pankaj, > > I have no experience with Hadoop but from the book I gathered there's one > Job Manager per application i.e. per jar (as in the example in the first > chapter). This is not to say there's one Job Manager per job. Actually I > don't think the word Job is defined in the book, I've seen Task defined, > and those do have Task Managers > > Hope this is along the right lines > > Regards, > Eduardo > > On Tue, 18 Jun 2019, 08:42 Pankaj Chand, <pankajchanda...@gmail.com> > wrote: > > I am trying to understand the role of Job Manager in Flink, and have come > across two possibly distinct interpretations. > > 1. The online documentation v1.8 signifies that there is at least one Job > Manager in a cluster, and it is closely tied to the cluster of machines, by > managing all jobs in that cluster of machines. > > This signifies that Flink's Job Manager is much like Hadoop's Application > Manager. > > 2. The book, "Stream Processing with Apache Flink", writes that, "The Job > Manager is the master process that controls the execution of a single > application—each application is controlled by a different Job Manager." > > This signifies that Flink defaults to one Job Manager per job, and the Job > Manager is closely tied to that single job, much like Hadoop's Application > Master for each job. > > Please let me know which one is correct. > > Pankaj > > > On Thu, Jun 20, 2019, 4:54 AM Chesnay Schepler <ches...@apache.org> wrote: > >> What makes you believe that they are out-dated? >> >> On 19/06/2019 19:17, Pankaj Chand wrote: >> > Hello, >> > >> > Please let me know how to get the updated documentation and tutorials >> > of Apache Flink. >> > The stable v1.8 and v1.9-snapshot release of the documentation seems >> > to be outdated. >> > >> > Thanks! >> > >> > Pankaj >> >> >> >> >
