zhijiangW commented on a change in pull request #10083: [FLINK-14472][runtime]Implement back-pressure monitor with non-blocking outputs. URL: https://github.com/apache/flink/pull/10083#discussion_r346109104
########## File path: docs/monitoring/back_pressure.md ########## @@ -34,30 +34,28 @@ If you see a **back pressure warning** (e.g. `High`) for a task, this means that Take a simple `Source -> Sink` job as an example. If you see a warning for `Source`, this means that `Sink` is consuming data slower than `Source` is producing. `Sink` is back pressuring the upstream operator `Source`. -## Sampling Threads +## Sampling Tasks -Back pressure monitoring works by repeatedly taking stack trace samples of your running tasks. The JobManager triggers repeated calls to `Thread.getStackTrace()` for the tasks of your job. +Back pressure monitoring works by repeatedly taking samples of your running tasks. The JobManager triggers repeated calls to `Task.isBackPressured()` for the tasks of your job. Review comment: taking back pressure samples ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
