diff --git a/dev-support/hbase-vote.sh b/dev-support/hbase-vote.sh
index ec9340a0b0e1..ae84d60f1cfb 100755
--- a/dev-support/hbase-vote.sh
+++ b/dev-support/hbase-vote.sh
@@ -16,6 +16,7 @@
 # specific language governing permissions and limitations
 # under the License.
 
+# for testing github PR
 set -e -o pipefail
 
 usage() {
diff --git a/hbase-common/src/main/java/org/apache/hadoop/hbase/ArrayBackedTag.java b/hbase-common/src/main/java/org/apache/hadoop/hbase/ArrayBackedTag.java
index 142fc4f89edc..bd1210cc6bd5 100644
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/ArrayBackedTag.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/ArrayBackedTag.java
@@ -25,6 +25,8 @@
 import org.apache.yetus.audience.InterfaceAudience;
 import org.apache.yetus.audience.InterfaceStability;
 
+import java.nio.ByteBuffer;
+
 /**
  * This is a {@link Tag} implementation in which value is backed by an on heap byte array.
  */