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HDFS-16027. Replace abstract methods with default methods in JournalNodeMXBean. (#3018) 

Reviewed-by: Ayush Saxena <ayushsaxena@apache.org>
This commit is contained in:
Wei-Chiu Chuang 2021-05-18 19:49:00 -07:00 committed by GitHub
parent 27749ce85d
commit 63392376c9
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1 changed files with 10 additions and 3 deletions
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13
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/server/JournalNodeMXBean.java
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@ -20,6 +20,7 @@ package org.apache.hadoop.hdfs.qjournal.server;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import java.util.Collections;
import java.util.List;
/**
@ -41,7 +42,9 @@ public interface JournalNodeMXBean {
*
* @return colon separated host and port.
*/
String getHostAndPort();
default String getHostAndPort() {
return "";
}
/**
* Get list of the clusters of JournalNode's journals
@ -49,12 +52,16 @@ public interface JournalNodeMXBean {
*
* @return list of clusters.
*/
List<String> getClusterIds();
default List<String> getClusterIds() {
return Collections.emptyList() ;
}
/**
* Gets the version of Hadoop.
*
* @return the version of Hadoop.
*/
String getVersion();
default String getVersion() {
return "";
}
}