steveloughran commented on pull request #2553:
URL: https://github.com/apache/hadoop/pull/2553#issuecomment-745533557
Test failures in tests which are seeing 1 too many LIST calls. I think the
wiring up of list duration and metrics is causing this; had something similar
with object metadata and HEAD requests, hence the different key names for the
duration and simple counter. If the duration has the same name then it updates
the counter, see.
[ERROR]
testCostOfListStatusOnEmptyDir[raw-delete-markers](org.apache.hadoop.fs.s3a.ITestS3AFileOperationCost)
Time elapsed: 6.77 s <<< FAILURE!
java.lang.AssertionError: operation returning
[Lorg.apache.hadoop.fs.s3a.S3AFileStatus;@10e4be9d: object_list_request
expected:<2> but was:<3>
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.failNotEquals(Assert.java:834)
at org.junit.Assert.assertEquals(Assert.java:645)
at
org.apache.hadoop.fs.s3a.S3ATestUtils$MetricDiff.assertDiffEquals(S3ATestUtils.java:1022)
at
org.apache.hadoop.fs.s3a.performance.OperationCostValidator$ExpectSingleStatistic.verify(OperationCostValidator.java:392)
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