./hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirXAttrOp.java:50:public class FSDirXAttrOp {:1: Utility classes should not have a public or default constructor. [HideUtilityClassConstructor]
./hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestOrderedSnapshotDeletion.java:49: static final String xattrName = "user.a1";:23: Name 'xattrName' must match pattern '^[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$'. [ConstantName]
./hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestOrderedSnapshotDeletion.java:50: static final byte[] xattrValue = {0x31, 0x32, 0x33};:23: Name 'xattrValue' must match pattern '^[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$'. [ConstantName]