Gabriella Lotz has uploaded this change for review. ( http://gerrit.cloudera.org:8080/24694
Change subject: KUDU-3791 add metrics for auto-leader-rebalancer ...................................................................... KUDU-3791 add metrics for auto-leader-rebalancer Before this change, log grepping was the only way to see what the auto-leader-rebalancer was doing. Add four counters on the master so operators and tests can observe it: - auto_leader_rebalancer_moves_scheduled - auto_leader_rebalancer_moves_failed - auto_leader_rebalancer_rounds_completed - auto_leader_rebalancer_global_pass_skipped Naming and units mirror the counters AutoRebalancerTask already exposes, so the two tasks read as a matched pair on /metrics. The last counter closes a diagnosability gap of its own. The global corrective pass only runs on rounds where per-table balancing has nothing left to schedule. If per-table work keeps arriving every round, the global pass never runs, and this counter is the signal. The AutoLeaderRebalancerTask constructor now takes a MetricEntity, passed from CatalogManager the same way AutoRebalancerTask already does. Adds a LeaderRebalancerTest.RebalancerMetrics test that exercises all four counters. Leaves the pre-existing "make step-down RPCs async" TODO in place as a separate follow-up. Change-Id: I49b86e59043a7f652d4f556b94582bb74c5698ad --- M src/kudu/master/auto_leader_rebalancer-test.cc M src/kudu/master/auto_leader_rebalancer.cc M src/kudu/master/auto_leader_rebalancer.h M src/kudu/master/catalog_manager.cc 4 files changed, 154 insertions(+), 13 deletions(-) git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/94/24694/1 -- To view, visit http://gerrit.cloudera.org:8080/24694 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: kudu Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: I49b86e59043a7f652d4f556b94582bb74c5698ad Gerrit-Change-Number: 24694 Gerrit-PatchSet: 1 Gerrit-Owner: Gabriella Lotz <[email protected]>
