This JIRA is to stop the DAG in a crude manner, based on an error condition. I think this might also need similar functionality as an error condition can occur anywhere in the DAG.
Perhaps we can modify the same JIRA to include a graceful + ungraceful (kill) shutdown from any operator in the DAG. ~ Bhupesh On Wed, Jan 18, 2017 at 11:55 AM, Tushar Gosavi <tus...@datatorrent.com> wrote: > I think this would be a great addition for batch use cases or use > cases were DAG needs to be shutdown after detecting some > completion/error condition through the operator. We have one Jira > Opened for such functionality > https://issues.apache.org/jira/browse/APEXCORE-503. > > - Tushar. > > > On Wed, Jan 18, 2017 at 11:45 AM, Bhupesh Chawda > <bhup...@datatorrent.com> wrote: > > Hi All, > > > > Currently we can shutdown an Apex app in the following ways: > > 1. Throw ShutdownException() from *all* the input operators > > 2. Use Apex CLI to shutdown an app using the YARN App Id > > > > I think we should have some way of shutting down an application from > within > > an operator. It is not always true that the trigger for shutdown is sent > by > > the input operator only. Sometimes, an end condition may be detected by > > some operator in the DAG which wants the processing to end. Such a > > shutdown, although triggered from some intermediate operator in the DAG, > > should guarantee graceful shut down of the application. > > > > Thoughts? > > > > ~ Bhupesh >
