[GitHub] [hadoop] mukund-thakur commented on a change in pull request #2257: HADOOP-17023 Tune S3AFileSystem.listStatus() api.

[GitBox <gi...@apache.org>]

mukund-thakur commented on a change in pull request #2257:
URL: https://github.com/apache/hadoop/pull/2257#discussion_r479223572



##########
File path: hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3AFileOperationCost.java
##########
@@ -176,6 +176,77 @@ public void testCostOfListFilesOnNonExistingDir() throws Throwable {
             .plus(GET_FILE_STATUS_FNFE)));
   }
 
+  @Test
+  public void testCostOfListStatusOnFile() throws Throwable {
+    describe("Performing listStatus() on a file");
+    Path file = path(getMethodName() + ".txt");
+    S3AFileSystem fs = getFileSystem();
+    touch(fs, file);
+    verifyMetrics(() ->
+            fs.listStatus(file),
+            whenRaw(LIST_STATUS_LIST_OP
+                    .plus(GET_FILE_STATUS_ON_FILE)),
+            whenAuthoritative(LIST_STATUS_LIST_OP),
+            whenNonauth(LIST_STATUS_LIST_OP));
+//    resetMetricDiffs();
+//    fs.listStatus(file);

Review comment:
       will remove the comments.




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