From f0dcbe78a7377edf8228c427eea0b108ef1be765 Mon Sep 17 00:00:00 2001
From: litao <tomleescut@gmail.com>
Date: Wed, 1 Jun 2022 02:49:49 +0800
Subject: [PATCH] HBASE-27068 NPE occurs when the active master has not yet
 been elected (#4474)

Signed-off-by: Pankaj Kumar <pankajkumar@apache.org>
Signed-off-by: Viraj Jasani<virajjasani@apache.org
---
 .../hadoop/hbase/tmpl/master/BackupMasterStatusTmpl.jamon    | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/BackupMasterStatusTmpl.jamon b/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/BackupMasterStatusTmpl.jamon
index 190f1dd857f..21af264bbe3 100644
--- a/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/BackupMasterStatusTmpl.jamon
+++ b/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/BackupMasterStatusTmpl.jamon
@@ -24,12 +24,13 @@ java.util.*;
 org.apache.hadoop.hbase.ServerName;
 org.apache.hadoop.hbase.ClusterMetrics;
 org.apache.hadoop.hbase.master.HMaster;
+org.apache.hbase.thirdparty.com.google.common.base.Preconditions;
 </%import>
 <%if (!master.isActiveMaster()) %>
     <%java>
     ServerName active_master = master.getActiveMaster().orElse(null);
-    assert active_master != null : "Failed to retrieve active master's ServerName!";
-    int activeInfoPort = active_master == null ? 0 : master.getActiveMasterInfoPort();
+    Preconditions.checkState(active_master != null, "Failed to retrieve active master's ServerName!");
+    int activeInfoPort = master.getActiveMasterInfoPort();
     </%java>
     <div class="row inner_header">
         <div class="page-header">