commit 19f80f5093d96e4254776d1d49b1bc244f7ba2ec
author lbc97 <82015813+lbc97@users.noreply.github.com> Fri Mar 04 15:55:05 2022 +0800
committer GitHub <noreply@github.com> Fri Mar 04 15:55:05 2022 +0800
tree 335e0c4cd5f0eeb53c7a5864a740dd5b899dbc12
parent 0ebad34d7e146d0a7482cace62ee78dddfde3649

[SCB-2385]fix IsolationDiscoveryFilter create many temporary objects (#2730)

handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/filter/IsolationDiscoveryFilter.java

diff --git a/handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/filter/IsolationDiscoveryFilter.java b/handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/filter/IsolationDiscoveryFilter.java
index b81d2e2..c4b99d3 100644
--- a/handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/filter/IsolationDiscoveryFilter.java
+++ b/handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/filter/IsolationDiscoveryFilter.java
@@ -106,7 +106,7 @@
       }
     });
 
-    DiscoveryTreeNode child = new DiscoveryTreeNode();
+    DiscoveryTreeNode child = parent.children().computeIfAbsent("filterred", etn -> new DiscoveryTreeNode());
     if (ZoneAwareDiscoveryFilter.GROUP_Instances_All
         .equals(context.getContextParameter(ZoneAwareDiscoveryFilter.KEY_ZONE_AWARE_STEP)) && filteredServers.isEmpty()
         && emptyProtection.get()) {