If it is not what Stephan said, you can check requests directly against the REST API and see if you experience the same slow down there.
https://ci.apache.org/projects/flink/flink-docs-release-1.2/monitoring/rest_api.html – Ufuk On 16 December 2016 at 10:52:18, Yury Ruchin (yuri.ruc...@gmail.com) wrote: > Thanks for the clue, Stephan! I will check. > > 2016-12-16 12:44 GMT+03:00 Stephan Ewen : > > > Not sure if that is the problem, but upon first access to a resource, The > > web server extracts the resource from the JAR file and puts it into the > > temp directpry. Maybe that is slow for whatever reason? > > > > On Thu, Dec 15, 2016 at 8:04 PM, Yury Ruchin > > wrote: > > > >> Hi, > >> > >> I'm seeing an issue with the load speed of Flink Web UI when running in > >> YARN session. Initial load takes several minutes or even more, although > >> according to the browser console there are only a couple of MBs to > >> download. When the loading is complete, the UI itself is quite responsive. > >> > >> I don't see such an issue with YARN UI loading from the same cluster over > >> the same network. I suspected that YARN proxy may cause the slowdown and > >> hit the direct Flink web UI URL - the same story. CPU, load average and > >> memory consumption on the node hosting job manager are low. I gave > >> jobmanager from 4Gb to 10Gb heap - no effect. > >> > >> Any ideas on how to approach the problem are appreciated. > >> > >> Thanks, > >> Yury > >> > > > > >
