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The following commit(s) were added to refs/heads/branch-1 by this push:
new ee869b9 HBASE-24477: Move ConfigurationObserver and related classes
to hbase-common
ee869b9 is described below
commit ee869b9aea78bc877b9052b91a5ccc47228327b1
Author: Bharath Vissapragada <bhara...@apache.org>
AuthorDate: Fri Dec 13 15:53:33 2019 -0800
HBASE-24477: Move ConfigurationObserver and related classes to hbase-common
This utility is useful for any module that wants to detect
dynamic config changes. Having it to hbase-common makes it
accessible to all the other modules.
Signed-off-by: Michael Stack <st...@apache.org>
Signed-off-by: Viraj Jasani <vjas...@apache.org>
---
.../hadoop/hbase/conf/ConfigurationManager.java | 19 +++++--------------
.../hadoop/hbase/conf/ConfigurationObserver.java | 0
.../hbase/conf/PropagatingConfigurationObserver.java | 0
.../hadoop/hbase/conf/TestConfigurationManager.java | 0
4 files changed, 5 insertions(+), 14 deletions(-)
diff --git
a/hbase-server/src/main/java/org/apache/hadoop/hbase/conf/ConfigurationManager.java
b/hbase-common/src/main/java/org/apache/hadoop/hbase/conf/ConfigurationManager.java
similarity index 90%
rename from
hbase-server/src/main/java/org/apache/hadoop/hbase/conf/ConfigurationManager.java
rename to
hbase-common/src/main/java/org/apache/hadoop/hbase/conf/ConfigurationManager.java
index 1e9bc8b..bd98eef 100644
---
a/hbase-server/src/main/java/org/apache/hadoop/hbase/conf/ConfigurationManager.java
+++
b/hbase-common/src/main/java/org/apache/hadoop/hbase/conf/ConfigurationManager.java
@@ -19,13 +19,10 @@ package org.apache.hadoop.hbase.conf;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
-import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.classification.InterfaceStability;
-
import java.util.Collections;
import java.util.Set;
import java.util.WeakHashMap;
+import org.apache.hadoop.conf.Configuration;
/**
* Maintains the set of all the classes which would like to get notified
@@ -56,9 +53,7 @@ import java.util.WeakHashMap;
* 2. Register the appropriate instance of the class with the
* {@link ConfigurationManager} instance, using the
* {@link ConfigurationManager#registerObserver(ConfigurationObserver)}
- * method. For the RS side of things, the ConfigurationManager is a static
- * member of the {@link org.apache.hadoop.hbase.regionserver.HRegionServer}
- * class. Be careful not to do this in the constructor, as you might cause
+ * method. Be careful not to do this in the constructor, as you might cause
* the 'this' reference to escape. Use a factory method, or an initialize()
* method which is called after the construction of the object.
*
@@ -68,10 +63,7 @@ import java.util.WeakHashMap;
* for any reason, it is still okay, since entries for dead observers are
* automatically collected during GC. But nonetheless, it is still a good
* practice to deregister your observer, whenever possible.
- *
*/
-@InterfaceAudience.Private
-@InterfaceStability.Evolving
public class ConfigurationManager {
private static final Log LOG = LogFactory.getLog(ConfigurationManager.class);
@@ -80,12 +72,11 @@ public class ConfigurationManager {
// constructed from a WeakHashMap, whose entries would be removed if the
// observer classes go out of scope.
private final Set<ConfigurationObserver> configurationObservers =
- Collections.newSetFromMap(new WeakHashMap<ConfigurationObserver,
- Boolean>());
+ Collections.newSetFromMap(new WeakHashMap<ConfigurationObserver,
Boolean>());
/**
* Register an observer class
- * @param observer
+ * @param observer observer to be registered.
*/
public void registerObserver(ConfigurationObserver observer) {
synchronized (configurationObservers) {
@@ -98,7 +89,7 @@ public class ConfigurationManager {
/**
* Deregister an observer class
- * @param observer
+ * @param observer to be deregistered.
*/
public void deregisterObserver(ConfigurationObserver observer) {
synchronized (configurationObservers) {
diff --git
a/hbase-server/src/main/java/org/apache/hadoop/hbase/conf/ConfigurationObserver.java
b/hbase-common/src/main/java/org/apache/hadoop/hbase/conf/ConfigurationObserver.java
similarity index 100%
rename from
hbase-server/src/main/java/org/apache/hadoop/hbase/conf/ConfigurationObserver.java
rename to
hbase-common/src/main/java/org/apache/hadoop/hbase/conf/ConfigurationObserver.java
diff --git
a/hbase-server/src/main/java/org/apache/hadoop/hbase/conf/PropagatingConfigurationObserver.java
b/hbase-common/src/main/java/org/apache/hadoop/hbase/conf/PropagatingConfigurationObserver.java
similarity index 100%
rename from
hbase-server/src/main/java/org/apache/hadoop/hbase/conf/PropagatingConfigurationObserver.java
rename to
hbase-common/src/main/java/org/apache/hadoop/hbase/conf/PropagatingConfigurationObserver.java
diff --git
a/hbase-server/src/test/java/org/apache/hadoop/hbase/conf/TestConfigurationManager.java
b/hbase-common/src/test/java/org/apache/hadoop/hbase/conf/TestConfigurationManager.java
similarity index 100%
rename from
hbase-server/src/test/java/org/apache/hadoop/hbase/conf/TestConfigurationManager.java
rename to
hbase-common/src/test/java/org/apache/hadoop/hbase/conf/TestConfigurationManager.java
