Andrew Wong has uploaded this change for review. ( http://gerrit.cloudera.org:8080/14976
Change subject: KUDU-3011 p1: metric to count tablet leaders ...................................................................... KUDU-3011 p1: metric to count tablet leaders Adds a metric that tracks the number of tablet leaders on a given server. This is done by plumbing down a top-level gauge down from the TSTabletManager to each TabletReplica's RaftConsensus instance. I considered instead having the metric be defined by a functor that would iterate through all replicas and check each's leadership status. I opted to not do this, since iterating through and locking each RaftConsensus instance seemed like it'd be less performant. This will be useful in orchestrating a smooth maintenance window, as it will allow us to wait for leadership to quiesce away from a given tablet server. Change-Id: Iaa6554458a860e34f97af168da7ed786c8ef47e4 --- M src/kudu/consensus/raft_consensus.cc M src/kudu/consensus/raft_consensus.h M src/kudu/consensus/raft_consensus_quorum-test.cc M src/kudu/integration-tests/raft_consensus_election-itest.cc M src/kudu/master/sys_catalog.cc M src/kudu/tablet/tablet_replica-test.cc M src/kudu/tablet/tablet_replica.cc M src/kudu/tablet/tablet_replica.h M src/kudu/tserver/tablet_copy_source_session-test.cc M src/kudu/tserver/ts_tablet_manager.cc M src/kudu/tserver/ts_tablet_manager.h 11 files changed, 114 insertions(+), 20 deletions(-) git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/76/14976/1 -- To view, visit http://gerrit.cloudera.org:8080/14976 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: kudu Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: Iaa6554458a860e34f97af168da7ed786c8ef47e4 Gerrit-Change-Number: 14976 Gerrit-PatchSet: 1 Gerrit-Owner: Andrew Wong <[email protected]>
