Yuqi Du has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/18454 )

Change subject: [master] KUDU-3390 support auto rebalance tablet leaders across 
TServers
......................................................................


Patch Set 24:

(4 comments)

Sorry for missing some crs.

http://gerrit.cloudera.org:8080/#/c/18454/12/src/kudu/master/auto_leader_rebalancer.cc
File src/kudu/master/auto_leader_rebalancer.cc:

http://gerrit.cloudera.org:8080/#/c/18454/12/src/kudu/master/auto_leader_rebalancer.cc@165
PS12, Line 165:
              :
              :       auto& uuid_replicas = LookupOrInsert(&uuid_replicas_map, 
ts_info.permanent_uuid(), {});
              :       uuid_replicas.emplace_back(tablet->id());
              :     }
              :   }
> Changed it, and I'll study it later.
Done


http://gerrit.cloudera.org:8080/#/c/18454/12/src/kudu/master/auto_leader_rebalancer.cc@175
PS12, Line 175: ring, std::pair<int32_t, int32_t>> tserver_statistics;
              :   // uuid->leader should transfer count
              :   map<string, int32_t> leader_transfer_source;
              :   for (const auto& uuid : tserver_uuids) {
              :     const vector<string>& replicas = 
FindWithDefault(uuid_replicas_map, uuid,  {});
              :     uint3
> Same
Done


http://gerrit.cloudera.org:8080/#/c/18454/12/src/kudu/master/auto_leader_rebalancer.cc@186
PS12, Line 186: nt32_t leader_count = leaders.size();
              :     tserver_statistics.insert({uuid, std::pair<int32_t, 
int32_t>(replica_count, leader_count)});
              :     VLOG(1) << Substitute(
              :         "uuid: $0, replica_count: $1, leader_count: $2", uuid, 
replica_count, leader_count);
              :
              :     // Our target is every tserver' replicas, number of leader 
: number of follower is
              :     //
> Same
Done


http://gerrit.cloudera.org:8080/#/c/18454/12/src/kudu/master/auto_leader_rebalancer.cc@323
PS12, Line 323:       return Status::OK();
> There are several code can be optimized by util functions in src/kudu/gutil
Done



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ibfb60d8759a93b6a19238637c27df4f6b1cac918
Gerrit-Change-Number: 18454
Gerrit-PatchSet: 24
Gerrit-Owner: Yuqi Du <[email protected]>
Gerrit-Reviewer: Abhishek Chennaka <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Andrew Wong <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Tidy Bot (241)
Gerrit-Reviewer: Yifan Zhang <[email protected]>
Gerrit-Reviewer: Yingchun Lai <[email protected]>
Gerrit-Reviewer: Yuqi Du <[email protected]>
Gerrit-Comment-Date: Fri, 19 Aug 2022 10:10:33 +0000
Gerrit-HasComments: Yes

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