HBASE-27281 Add default implementation for Connection$getClusterId (#4683)
Signed-off-by: Duo Zhang <zhangduo@apache.org>
diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Connection.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Connection.java
index b26e4d1..8220189 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Connection.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Connection.java
@@ -180,8 +180,13 @@
*/
AsyncConnection toAsyncConnection();
- /** Returns the cluster ID unique to this HBase cluster. */
- String getClusterId();
+ /**
+ * Returns the cluster ID unique to this HBase cluster. <br>
+ * The default implementation is added to keep client compatibility.
+ */
+ default String getClusterId() {
+ return null;
+ }
/**
* Retrieve an Hbck implementation to fix an HBase cluster. The returned Hbck is not guaranteed to
