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  1. Flink
  2. FLINK-13550

Support for CPU FlameGraphs in web UI

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    • Flink now offers Flamegraphs for each node in the job graph. Please enable this experimental feature by setting the respective configuration flag rest.flamegraph.enabled.

    Description

      For a better insight into a running job, it would be useful to have ability to render a CPU flame graph for a particular job vertex.

      Flink already has a stack-trace sampling mechanism in-place, so it should be straightforward to implement.

      This should be done by implementing a new endpoint in REST API, which would sample the stack-trace the same way as current BackPressureTracker does, only with a different sampling rate and length of sampling.

      Here is a little demo of the feature.

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              afedulov Alexander Fedulov
              dmvk David Morávek
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