[GitHub] [incubator-pegasus] empiredan opened a new issue, #1353: Feature(new_metrics): detect hotspot partitions with hotspot and request replicain go collector

["empiredan (via GitHub)" <gi...@apache.org>]

empiredan opened a new issue, #1353:
URL: https://github.com/apache/incubator-pegasus/issues/1353

   In https://github.com/apache/incubator-pegasus/pull/1351, it has been found that `detect_hotspot_test` cannot be passed.
   
   The reason is that the hotspot detection depends on the perf-counters system. C++ Collector collects perf-counters from each replica server, and decide if there is some partition with hotspot; once there is hotspot, C++ Collector will request the primary replica (via the replica server which the replica hosts on) to detect hotkey (`RPC_DETECT_HOTKEY`). As for the primary replica, once it has been requested to detect the hot key, it will capture each written or read hash key by `capacity_unit_calculator`.
   
   which
             # is being replaced with the new metrics system, its test will fail. Temporarily disable
             # the test and re-enable it after the hotspot detection is migrated to the new metrics
             # system.


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