[email protected] has posted comments on this change. ( http://gerrit.cloudera.org:8080/23687 )
Change subject: IMPALA-14562: Enable Hierarchical event processing by default ...................................................................... Patch Set 2: (1 comment) http://gerrit.cloudera.org:8080/#/c/23687/2/be/src/catalog/catalog-server.cc File be/src/catalog/catalog-server.cc: http://gerrit.cloudera.org:8080/#/c/23687/2/be/src/catalog/catalog-server.cc@261 PS2, Line 261: DEFINE_bool(enable_hierarchical_event_processing, true, We need to reduce hms_event_polling_interval_s to < 1sec. Since multiple threads are processing events, polling frequency can be increased to use the full potential of HEP. We can keep 0.2sec or lower. Because we have max_outstanding_events_on_executors to limit the max outstanding events at any point of time. So if outstanding events hit the limit, we don’t pull any more events from HMS(on subsequent processEvents() thread schedules) until it comes down below this. hms_event_polling_interval_s can be configured to a lower possible value that ensures HMS don't get overloaded with too frequent calls. -- To view, visit http://gerrit.cloudera.org:8080/23687 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: Ie9a28f863ef17456817e0a335215450e514b1f5b Gerrit-Change-Number: 23687 Gerrit-PatchSet: 2 Gerrit-Owner: Sai Hemanth Gantasala <[email protected]> Gerrit-Reviewer: Anonymous Coward <[email protected]> Gerrit-Reviewer: Fang-Yu Rao <[email protected]> Gerrit-Reviewer: Impala Public Jenkins <[email protected]> Gerrit-Reviewer: Quanlong Huang <[email protected]> Gerrit-Reviewer: Sai Hemanth Gantasala <[email protected]> Gerrit-Comment-Date: Thu, 20 Nov 2025 11:36:33 +0000 Gerrit-HasComments: Yes
