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Posted to commits@sentry.apache.org by sd...@apache.org on 2015/11/05 02:44:48 UTC
[20/25] incubator-sentry git commit: SENTRY-913: Thread safe
improvement for sqoop binding singleton (Dapeng Sun, reviewed by Guoquan Shen)
SENTRY-913: Thread safe improvement for sqoop binding singleton (Dapeng Sun, reviewed by Guoquan Shen)
Project: http://git-wip-us.apache.org/repos/asf/incubator-sentry/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-sentry/commit/60e9b541
Tree: http://git-wip-us.apache.org/repos/asf/incubator-sentry/tree/60e9b541
Diff: http://git-wip-us.apache.org/repos/asf/incubator-sentry/diff/60e9b541
Branch: refs/heads/hive_plugin_v2
Commit: 60e9b541a6024e9fac6beadd7c771f69b2ba129f
Parents: c69350b
Author: Sun Dapeng <sd...@apache.org>
Authored: Wed Oct 14 15:59:59 2015 +0800
Committer: Sun Dapeng <sd...@apache.org>
Committed: Mon Nov 2 16:37:12 2015 +0800
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.../sentry/sqoop/binding/SqoopAuthBindingSingleton.java | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
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http://git-wip-us.apache.org/repos/asf/incubator-sentry/blob/60e9b541/sentry-binding/sentry-binding-sqoop/src/main/java/org/apache/sentry/sqoop/binding/SqoopAuthBindingSingleton.java
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diff --git a/sentry-binding/sentry-binding-sqoop/src/main/java/org/apache/sentry/sqoop/binding/SqoopAuthBindingSingleton.java b/sentry-binding/sentry-binding-sqoop/src/main/java/org/apache/sentry/sqoop/binding/SqoopAuthBindingSingleton.java
index bdd60a4..7dd2a28 100644
--- a/sentry-binding/sentry-binding-sqoop/src/main/java/org/apache/sentry/sqoop/binding/SqoopAuthBindingSingleton.java
+++ b/sentry-binding/sentry-binding-sqoop/src/main/java/org/apache/sentry/sqoop/binding/SqoopAuthBindingSingleton.java
@@ -83,10 +83,13 @@ public class SqoopAuthBindingSingleton {
}
public static SqoopAuthBindingSingleton getInstance() {
- if (instance != null) {
- return instance;
+ if (instance == null) {
+ synchronized (SqoopAuthBindingSingleton.class) {
+ if (instance == null) {
+ instance = new SqoopAuthBindingSingleton();
+ }
+ }
}
- instance = new SqoopAuthBindingSingleton();
return instance;
}