[phoenix] branch 4.14-HBase-1.2 updated: PHOENIX-5246: PhoenixAccessControllers.getAccessControllers() method is not correctly implementing the double-checked locking

[td...@apache.org]

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tdsilva pushed a commit to branch 4.14-HBase-1.2
in repository https://gitbox.apache.org/repos/asf/phoenix.git


The following commit(s) were added to refs/heads/4.14-HBase-1.2 by this push:
     new 371900a  PHOENIX-5246: PhoenixAccessControllers.getAccessControllers() method is not correctly implementing the double-checked locking
371900a is described below

commit 371900af58ef6978cd38d024ccf0d4180fa8ff8e
Author: s.kadam <s....@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 62c158c..18a293f 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
@@ -71,7 +71,7 @@ import com.google.protobuf.RpcCallback;
 public class PhoenixAccessController extends BaseMetaDataEndpointObserver {
 
     private PhoenixMetaDataControllerEnvironment env;
-    private ArrayList<BaseMasterAndRegionObserver> accessControllers;
+    private volatile ArrayList<BaseMasterAndRegionObserver> accessControllers;
     private boolean accessCheckEnabled;
     private UserProvider userProvider;
     public static final Log LOG = LogFactory.getLog(PhoenixAccessController.class);