RestOperation fix

Author: anmolanmol1234

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

@@ -25,6 +25,7 @@
 import java.net.UnknownHostException;
 import java.util.List;
 
+import org.apache.hadoop.classification.VisibleForTesting;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -260,7 +261,7 @@ private boolean executeHttpOperation(final int retryCount,
 
     try {
       // initialize the HTTP request and open the connection
-      httpOperation = new AbfsHttpOperation(url, method, requestHeaders);
+      httpOperation = createHttpOperation();
       incrementCounter(AbfsStatistic.CONNECTIONS_MADE, 1);
       tracingContext.constructHeader(httpOperation);
 
@@ -359,6 +360,15 @@ private boolean executeHttpOperation(final int retryCount,
     return true;
   }
 
+  /**
+   * Creates new object of {@link AbfsHttpOperation} with the url, method, and
+   * requestHeaders fields of the AbfsRestOperation object.
+   */
+  @VisibleForTesting
+  AbfsHttpOperation createHttpOperation() throws IOException {
+    return new AbfsHttpOperation(url, method, requestHeaders);
+  }
+
   /**
    * Incrementing Abfs counters with a long value.
    *