mukund-thakur commented on code in PR #6752:
URL: https://github.com/apache/hadoop/pull/6752#discussion_r1609025458


##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/AzureBlobFileSystem.java:
##########
@@ -223,6 +225,21 @@ public void initialize(URI uri, Configuration 
configuration)
       }
     }
 
+    if ((abfsConfiguration.createEncryptionContextProvider() != null
+        || StringUtils.isNotEmpty(
+        abfsConfiguration.getEncodedClientProvidedEncryptionKey()))
+        && !getIsNamespaceEnabled(
+        new TracingContext(clientCorrelationId, fileSystemId,
+            FSOperationType.CREATE_FILESYSTEM, tracingHeaderFormat, 
listener))) {
+      /*
+       * Close the filesystem gracefully before throwing exception. Graceful 
close
+       * will ensure that all resources are released properly.
+       */
+      close();
+      throw new PathIOException(uri.getPath(),
+          CPK_IN_NON_HNS_ACCOUNT_ERROR_MESSAGE);

Review Comment:
   maybe add what needs to be configured correctly. 



##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/AzureBlobFileSystem.java:
##########
@@ -223,6 +225,21 @@ public void initialize(URI uri, Configuration 
configuration)
       }
     }
 
+    if ((abfsConfiguration.createEncryptionContextProvider() != null

Review Comment:
   maybe exctract into small methods with self explanatory names which can make 
this check easier to understand.



##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/AzureBlobFileSystem.java:
##########
@@ -223,6 +225,21 @@ public void initialize(URI uri, Configuration 
configuration)
       }
     }
 
+    if ((abfsConfiguration.createEncryptionContextProvider() != null
+        || StringUtils.isNotEmpty(
+        abfsConfiguration.getEncodedClientProvidedEncryptionKey()))
+        && !getIsNamespaceEnabled(
+        new TracingContext(clientCorrelationId, fileSystemId,
+            FSOperationType.CREATE_FILESYSTEM, tracingHeaderFormat, 
listener))) {
+      /*
+       * Close the filesystem gracefully before throwing exception. Graceful 
close
+       * will ensure that all resources are released properly.
+       */
+      close();

Review Comment:
   what if close() throws exception?



##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/constants/AbfsHttpConstants.java:
##########
@@ -165,5 +165,8 @@ public static ApiVersion getCurrentVersion() {
    */
   public static final Integer HTTP_STATUS_CATEGORY_QUOTIENT = 100;
 
+  public static final String CPK_IN_NON_HNS_ACCOUNT_ERROR_MESSAGE =
+      "Non HNS account can not have CPK configs enabled.";

Review Comment:
   add the property names here such that it is easier for a user to find and 
remove those. 



##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/AzureBlobFileSystem.java:
##########
@@ -223,6 +225,21 @@ public void initialize(URI uri, Configuration 
configuration)
       }
     }
 
+    if ((abfsConfiguration.createEncryptionContextProvider() != null

Review Comment:
   add a comment explaining the logic. 
   



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