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Posted to notifications@skywalking.apache.org by GitBox <gi...@apache.org> on 2020/12/19 04:21:56 UTC

[GitHub] [skywalking] ArvinDevel commented on issue #3482: What the sampling mechanism is

ArvinDevel commented on issue #3482:
URL: https://github.com/apache/skywalking/issues/3482#issuecomment-748416731


   > This wouldn't happen, if the trace segment has been sampled, then all upstream trace segments will be sampled automatically.
   
   1.What's the mechanism? Assume B was sampled firstly, how does A know that the B was sampled and then sample itself?
   2.Does skywalking support tail-based sampling? Since tail-based sampling captures all outliers so that you don’t miss crucial trace data when you are troubleshooting a performance issue.


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