openinx commented on a change in pull request #4384:
URL: https://github.com/apache/iceberg/pull/4384#discussion_r833964212



##########
File path: orc/src/main/java/org/apache/iceberg/orc/ORC.java
##########
@@ -162,11 +162,9 @@ private WriteBuilder 
createContextFunc(Function<Map<String, String>, Context> ne
     public <D> FileAppender<D> build() {
       Preconditions.checkNotNull(schema, "Schema is required");
 
-      Configuration conf;
+      Configuration conf = new Configuration();
       if (file instanceof HadoopOutputFile) {
-        conf = ((HadoopOutputFile) file).getConf();
-      } else {
-        conf = new Configuration();
+        ((HadoopOutputFile) file).getConf().forEach(entry -> 
conf.set(entry.getKey(), entry.getValue()));

Review comment:
       Seems we will merge the hadoop file's configuration with the default 
environment configuration by default if it's a `HadoopOutputFile`, right ? 
   
   Should we just use the original code piece ( according to 
[here](https://github.com/apache/iceberg/pull/4291/files#diff-34d7fce4c1d9417fa9342247cf5ace0636cd86591efbed0555ae80197f79303dL90-L94)):
   
   ```java
         if (file instanceof HadoopOutputFile) {
           this.conf = new Configuration(((HadoopOutputFile) file).getConf());
         } else {
           this.conf = new Configuration();
         }
   ```




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