fix checkstyle

Author: huangzhaobo99

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirRenameOp.java

@@ -83,7 +83,7 @@ private static Triple<Boolean, Optional<QuotaCounts>, Optional<QuotaCounts>> ver
     }
 
     // Verify path without valid 'DirectoryWithQuotaFeature'
-    // Note: In overwrite scenarios, quota calculation is still required, 
+    // Note: In overwrite scenarios, quota calculation is still required,
     // overwrite operations delete existing content, which affects the root directory's quota.
     if (!overwrite && FSDirectory.verifyPathWithoutValidFeature(src)
         && FSDirectory.verifyPathWithoutValidFeature(dst)) {

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java

@@ -17,7 +17,6 @@
  */
 package org.apache.hadoop.hdfs.server.namenode;
 
-import org.apache.hadoop.hdfs.server.namenode.snapshot.DirectorySnapshottableFeature;
 import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
 import org.apache.hadoop.util.StringUtils;
 
@@ -1244,8 +1243,8 @@ static void verifyQuota(INodesInPath iip, int pos, QuotaCounts deltas,
   }
 
   /**
-   * Verifies that the path from the specified position to the root
-   * does not contain any valid features.
+   * Verify that the path from the specified position to the root
+   * (excluding the root itself) does not contain any valid quota features.
    *
    * @param iip the INodesInPath containing all the ancestral INodes.
    * @return true if no valid features are found along the path,
@@ -1362,6 +1361,7 @@ private void copyINodeDefaultAcl(INode child, FsPermission modes) {
    * @param inode the new INode to add
    * @param modes create modes
    * @param checkQuota whether to check quota
+   * @param updateQuota whether to update quota           
    * @return an INodesInPath instance containing the new INode
    */
   @VisibleForTesting

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestCorrectnessOfQuotaAfterRenameOp.java

@@ -80,7 +80,7 @@ public void testQuotaUsageWhenRenameWithSameStoragePolicy() throws Exception {
     DFSTestUtil.createFile(dfs, file2, fileLen, replication, 0);
 
     final Path dstDir1 = new Path(testParentDir2, "dst-dir");
-    // If dstDir1 not exist, after the rename operation, 
+    // If dstDir1 not exist, after the rename operation,
     // the root dir's quota usage should remain unchanged.
     QuotaUsage quotaUsage1 = dfs.getQuotaUsage(new Path("/"));
     ContentSummary cs1 = dfs.getContentSummary(testParentDir1);