HDFS-16027. Replace abstract methods with default methods in JournalNodeMXBean. (#3018)
Reviewed-by: Ayush Saxena <ayushsaxena@apache.org>
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@ -20,6 +20,7 @@
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import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.classification.InterfaceStability;
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import java.util.Collections;
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import java.util.List;
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/**
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@ -41,7 +42,9 @@ public interface JournalNodeMXBean {
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*
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* @return colon separated host and port.
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*/
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String getHostAndPort();
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default String getHostAndPort() {
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return "";
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}
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/**
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* Get list of the clusters of JournalNode's journals
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@ -49,12 +52,16 @@ public interface JournalNodeMXBean {
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*
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* @return list of clusters.
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*/
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List<String> getClusterIds();
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default List<String> getClusterIds() {
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return Collections.emptyList() ;
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}
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/**
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* Gets the version of Hadoop.
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*
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* @return the version of Hadoop.
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*/
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String getVersion();
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default String getVersion() {
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return "";
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}
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}
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