[phoenix] 01/12: PHOENIX-5246: PhoenixAccessControllers.getAccessControllers() method is not correctly implementing the double-checked locking

[pboado]

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

pboado pushed a commit to branch 5.x-cdh6
in repository https://gitbox.apache.org/repos/asf/phoenix.git

commit f2d96590fa9be307f93ec56538c0ef1301d0ec9b
Author: s.kadam <s.ka...@salesforce.com>
AuthorDate: Fri Apr 19 21:10:27 2019 +0100

    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);