HBASE-22157 Include the cause when constructing RestoreSnapshotException in restoreSnapshot

Signed-off-by: Zheng Hu <openinx@gmail.com>

Author: Apache9

hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncHBaseAdmin.java

@@ -1942,7 +1942,7 @@ private CompletableFuture<Void> restoreSnapshot(String snapshotName, TableName t
  String msg =
  "Restore snapshot=" + snapshotName + " failed. Rollback to snapshot=" +
  failSafeSnapshotSnapshotName + " succeeded.";
- future.completeExceptionally(new RestoreSnapshotException(msg));
+ future.completeExceptionally(new RestoreSnapshotException(msg, err2));
  }
  });
  } else {

hbase-client/src/main/java/org/apache/hadoop/hbase/snapshot/HBaseSnapshotException.java

@@ -65,7 +65,7 @@ public HBaseSnapshotException(String msg, Throwable cause, SnapshotDescription d
  * @param message description of what caused the failure
  * @param e root cause
  */
- public HBaseSnapshotException(String message, Exception e) {
+ public HBaseSnapshotException(String message, Throwable e) {
  super(message, e);
  }
 

hbase-client/src/main/java/org/apache/hadoop/hbase/snapshot/RestoreSnapshotException.java

@@ -39,7 +39,7 @@ public RestoreSnapshotException(String msg) {
  super(msg);
  }
 
- public RestoreSnapshotException(String message, Exception e) {
+ public RestoreSnapshotException(String message, Throwable e) {
  super(message, e);
  }
 }