minor corrections

Author: manika137

hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsDfsClient.java

@@ -617,7 +617,7 @@ public AbfsClientRenameResult renamePath(
 
       if(op.getResult().getStorageErrorCode()
           .equals(UNAUTHORIZED_BLOB_OVERWRITE.getErrorCode())){
-        throw new FileAlreadyExistsException("File already exists or request not authorized for blob overwrites.");
+        throw new FileAlreadyExistsException("File already exists.");
       }
 
       // ref: HADOOP-18242. Rename failure occurring due to a rare case of

hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/ITestAzureBlobFileSystemDelegationSAS.java

@@ -225,6 +225,7 @@ public void checkExceptionForRenameOverwrites() throws Exception {
 
     try {
       fs.rename(src, dest);
+      Assertions.fail("Exception expected on rename overwrites.");
     } catch (FileAlreadyExistsException e) {
       Assertions.assertThat(e)
           .isInstanceOf(FileAlreadyExistsException.class);