add comment

XiaoMi · Jan 17, 2019 · 969cf67 · 969cf67
1 parent 9c467ac
commit 969cf67
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/main/java/com/xiaomi/infra/pegasus/rpc/async/ReplicaSession.java b/src/main/java/com/xiaomi/infra/pegasus/rpc/async/ReplicaSession.java
@@ -328,6 +328,10 @@ private final static class VolatileFields {
     private Bootstrap boot;
     private EventLoopGroup rpcGroup;
 
+    // Session will be actively closed if there're successive timeout errors across
+    // `sessionResetTimeWindowMs`, after which we suspect that the server is unavailable.
+
+    // Timestamp of the first timed out rpc.
     private AtomicLong firstRecentTimedOutMs;
     private static final long sessionResetTimeWindowMs = 10 * 1000; // 10s