[phoenix] branch master updated: PHOENIX-5246: PhoenixAccessControllers.getAccessControllers() method is not correctly implementing the double-checked locking

[tdsilva]

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tdsilva pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/phoenix.git


The following commit(s) were added to refs/heads/master by this push:
     new 2e98269  PHOENIX-5246: PhoenixAccessControllers.getAccessControllers() 
method is not correctly implementing the double-checked locking
2e98269 is described below

commit 2e98269dd94f17fa01437065f36f26ef12a49dba
Author: s.kadam <s.ka...@salesforce.com>
AuthorDate: Fri Apr 19 13:10:27 2019 -0700

    PHOENIX-5246: PhoenixAccessControllers.getAccessControllers() method is not 
correctly implementing the double-checked locking
---
 .../java/org/apache/phoenix/coprocessor/PhoenixAccessController.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git 
a/phoenix-core/src/main/java/org/apache/phoenix/coprocessor/PhoenixAccessController.java
 
b/phoenix-core/src/main/java/org/apache/phoenix/coprocessor/PhoenixAccessController.java
index d07f4f7..1303363 100644
--- 
a/phoenix-core/src/main/java/org/apache/phoenix/coprocessor/PhoenixAccessController.java
+++ 
b/phoenix-core/src/main/java/org/apache/phoenix/coprocessor/PhoenixAccessController.java
@@ -77,7 +77,7 @@ import com.google.protobuf.RpcController;
 public class PhoenixAccessController extends BaseMetaDataEndpointObserver {
 
     private PhoenixMetaDataControllerEnvironment env;
-    private ArrayList<MasterObserver> accessControllers;
+    private volatile ArrayList<MasterObserver> accessControllers;
     private boolean accessCheckEnabled;
     private UserProvider userProvider;
     public static final Log LOG = 
LogFactory.getLog(PhoenixAccessController.class);