Ufuk Celebi created FLINK-3310:
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Summary: Add back pressure statistics to web frontend
Key: FLINK-3310
URL: https://issues.apache.org/jira/browse/FLINK-3310
Project: Flink
Issue Type: Improvement
Components: Webfrontend
Reporter: Ufuk Celebi
Assignee: Ufuk Celebi
Priority: Minor
When a task is receiving data at a higher rate than it can process, the task is
back pressuring preceding tasks. Currently, there is no way to tell whether
this is the case or not. An indicator for back pressure is tasks being stuck in
buffer requests on the network stack. This means that they have filled all
their buffers with data, but the following tasks/network are not consuming them
fast enough.
A simple way to measure back pressure is to sample running tasks and report
back pressure if they are stuck in the blocking buffers calls.
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