Thanks Joe. I will give those tips a try. I also had timeouts trying to restart NiFi so I'm not sure whether it was those processes that caused that. On Tue, 24 Nov 2015 at 1:30 AM, Mark Payne <[email protected]> wrote:
> Chris, > > Just to expand upon what Joe mentioned below. > > When you say that it immediately becomes stuck when you restart, I assume > that means that you're restarting with it running. If you tell the > processor to stop > and restart, it should not begin running. This way you wouldn't need to > change > the autoResumeState. Unless I'm misunderstanding something? > > Also, when you run "bin/nifi.sh dump" it is often easier to specify a > filename there > such as "bin/nifi.sh dump thread-dump.txt" so that it writes the thread > dump to the > filename specified, rather than writing it to the logs. > > Thanks > -Mark > > > > On Nov 23, 2015, at 9:25 AM, Joe Witt <[email protected]> wrote: > > > > Chris, > > > > If you run into a case of a stuck thread we'd love to see the stack > > trace. You can generate one by running 'bin/nifi.sh dump' and sending > > us the logs. I believe it is bootstrap.log specifically. > > > > If you have a processor which immediately gets stuck after startup > > where it takes a thread and never relinquishes even if told to stop > > then that does present a tricky situation for a user today. We need > > to provide a mechanism [1] whereby the user can say 'kill' and we'd > > take that thread off into some special space and whatever sessions(s) > > it has are automatically rolled-back no matter what. Right now the > > approach you'd have to take is to set conf/nifi.properties > > > > nifi.flowcontroller.autoResumeState=false > > > > Then restart and now you can change/tweak/fix/test that processor > > because all processes will come up stopped. Just remember to change > > that setting back :-) > > > > Now, perhaps add additional copies of that processor to the graph and > > tweak settings to find what is ultimately holding it up. Tell it to > > redirect the error stream, try the command manually, etc.. > > > > [1] https://issues.apache.org/jira/browse/NIFI-78 > > > > Thanks > > Joe > > > > On Mon, Nov 23, 2015 at 8:45 AM, Chris Teoh <[email protected]> > wrote: > >> Hi folks, > >> > >> I have a processor stuck with a process (1 displayed in top right > corner). > >> How do I stop this? I have tried restarting NiFi but it comes back with > the > >> same issue. > >> > >> Kind Regards > >> Chris > >
