feat: introduce DowngradingLeader

GreptimeTeam · Sep 27, 2024 · 0b4f7c8 · 0b4f7c8
1 parent 3633474
commit 0b4f7c8
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Showing 5 changed files with 75 additions and 40 deletions.
diff --git a/c++/greptime/v1/meta/heartbeat.pb.cc b/c++/greptime/v1/meta/heartbeat.pb.cc
diff --git a/c++/greptime/v1/meta/heartbeat.pb.h b/c++/greptime/v1/meta/heartbeat.pb.h
diff --git a/go/greptime/v1/meta/heartbeat.pb.go b/go/greptime/v1/meta/heartbeat.pb.go
diff --git a/java/src/main/java/greptime/v1/meta/HeartbeatOuterClass.java b/java/src/main/java/greptime/v1/meta/HeartbeatOuterClass.java
diff --git a/proto/greptime/v1/meta/heartbeat.proto b/proto/greptime/v1/meta/heartbeat.proto
@@ -54,6 +54,10 @@ enum RegionRole {
   Leader = 0;
   // Readonly region.
   Follower = 1;
+  // A downgrading region, which is in the process of downgrading from Leader to Follower.
+  // 
+  // This role is used to prevent the region from being written during the downgrade process.
+  DowngradingLeader = 2;
 }
 
 message NodeInfo {