[incubator-uniffle] branch branch-0.7 updated: [#933][0.7] fix: incorrect metric grpc_server_connection_number (#941)

[roryqi]

This is an automated email from the ASF dual-hosted git repository.

roryqi pushed a commit to branch branch-0.7
in repository https://gitbox.apache.org/repos/asf/incubator-uniffle.git


The following commit(s) were added to refs/heads/branch-0.7 by this push:
     new 06c80243 [#933][0.7] fix: incorrect metric 
grpc_server_connection_number (#941)
06c80243 is described below

commit 06c8024333a814b88e227cd098193d7e322645aa
Author: xianjingfeng <xianjingfeng...@gmail.com>
AuthorDate: Fri Jun 9 22:26:44 2023 +0800

    [#933][0.7] fix: incorrect metric grpc_server_connection_number (#941)
    
    ### What changes were proposed in this pull request?
    
    Fix incorrect metric grpc_server_connection_number
    
    ### Why are the changes needed?
    
    Fix: #933
    
    ### Does this PR introduce _any_ user-facing change?
    
    No.
    
    ### How was this patch tested?
    
    Existing UT
---
 .../apache/uniffle/common/rpc/MonitoringServerTransportFilter.java    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git 
a/common/src/main/java/org/apache/uniffle/common/rpc/MonitoringServerTransportFilter.java
 
b/common/src/main/java/org/apache/uniffle/common/rpc/MonitoringServerTransportFilter.java
index 2c29dd27..ef687ec4 100644
--- 
a/common/src/main/java/org/apache/uniffle/common/rpc/MonitoringServerTransportFilter.java
+++ 
b/common/src/main/java/org/apache/uniffle/common/rpc/MonitoringServerTransportFilter.java
@@ -37,7 +37,9 @@ public class MonitoringServerTransportFilter extends 
ServerTransportFilter {
   }
 
   public void transportTerminated(Attributes transportAttrs) {
-    grpcMetrics.decGauge(GRPC_SERVER_CONNECTION_NUMBER_KEY);
+    if (transportAttrs != null) {
+      grpcMetrics.decGauge(GRPC_SERVER_CONNECTION_NUMBER_KEY);
+    }
     super.transportTerminated(transportAttrs);
   }
 }