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https://issues.apache.org/jira/browse/HADOOP-19575?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17955163#comment-17955163
 ] 

ASF GitHub Bot commented on HADOOP-19575:
-----------------------------------------

manika137 commented on code in PR #7713:
URL: https://github.com/apache/hadoop/pull/7713#discussion_r2115531825


##########
hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/ITestAbfsClient.java:
##########
@@ -355,6 +356,44 @@ public void verifyUserAgentClusterType() throws Exception {
       .contains(DEFAULT_VALUE_UNKNOWN);
   }
 
+  @Test
+  // Test to verify the unique identifier in user agent string for FNS-Blob 
accounts
+  public void verifyUserAgentForFNSBlob() throws Exception {
+    Assume.assumeTrue(JDK_HTTP_URL_CONNECTION == httpOperationType);
+    assumeHnsDisabled();
+    Assume.assumeTrue(getAbfsServiceType() == AbfsServiceType.BLOB);
+    final AzureBlobFileSystem fs = getFileSystem(getRawConfiguration());
+    final AbfsConfiguration configuration = fs.getAbfsStore()
+        .getAbfsConfiguration();
+
+    String userAgentStr = getUserAgentString(configuration, false);
+    verifyBasicInfo(userAgentStr);
+    Assertions.assertThat(userAgentStr)
+        .describedAs(
+            "User-Agent string for FNS accounts on Blob endpoint should 
contain "
+                + FNS_BLOB_USER_AGENT_IDENTIFIER)
+        .contains(FNS_BLOB_USER_AGENT_IDENTIFIER);
+  }
+
+  @Test
+  // Test to verify that the user agent string for non-FNS-Blob accounts
+  // does not contain the FNS identifier.
+  public void verifyUserAgentForDFS() throws Exception {

Review Comment:
   For both HNS-DFS and FNS-DFS we would want to check that the string isnt 
added right





> ABFS: [FNSOverBlob] Add Distinct String In User Agent to Get Telemetry for 
> FNS-Blob
> -----------------------------------------------------------------------------------
>
>                 Key: HADOOP-19575
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19575
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/azure
>    Affects Versions: 3.4.0, 3.4.1
>            Reporter: Manika Joshi
>            Assignee: Manika Joshi
>            Priority: Major
>              Labels: pull-request-available
>
> Add a unique identifier in FNS-Blob user agent to get their usage through 
> telemetry



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