Steve Loughran created HADOOP-13993:
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             Summary: transient
                 Key: HADOOP-13993
                 URL: https://issues.apache.org/jira/browse/HADOOP-13993
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs/s3
    Affects Versions: 2.8.0
            Reporter: Steve Loughran
            Priority: Minor


logging for the sake of completeness; a transient failure of
{{ITestS3AInputStreamPerformance.testDecompressionSequential128K}} during a 
parallel test run over long-haul links.

What I suspect happened is that some network failure triggered the connection 
being closed and reopened. The test merely asserts that the number of opens == 
1, ignoring the error count. If this failure keeps happening, maybe that should 
be used as part of the assertions, asserting that opencount - errorcount == 1. 
Though there, as the error count is used for more than just read+reopen errors, 
it could maybe be unreliable


{code}
org.apache.hadoop.fs.s3a.scale.ITestS3AInputStreamPerformancetestDecompressionSequential128K(org.apache.hadoop.fs.s3a.scale.ITestS3AInputStreamPerformance)
  Time elapsed: 24.583 sec  <<< FAILURE! java.lang.AssertionError: open 
operations innull expected:<1> but was:<2>
        at org.junit.Assert.fail(Assert.java:88)
        at org.junit.Assert.failNotEquals(Assert.java:743)
        at org.junit.Assert.assertEquals(Assert.java:118)
        at org.junit.Assert.assertEquals(Assert.java:555)
        at 
org.apache.hadoop.fs.s3a.scale.ITestS3AInputStreamPerformance.assertOpenOperationCount(ITestS3AInputStreamPerformance.java:188)
        at 
org.apache.hadoop.fs.s3a.scale.ITestS3AInputStreamPerformance.assertStreamOpenedExactlyOnce(ITestS3AInputStreamPerformance.java:180)
        at 
org.apache.hadoop.fs.s3a.scale.ITestS3AInputStreamPerformance.testDecompressionSequential128K(ITestS3AInputStreamPerformance.java:283)
testRandomReadOverBuffer(org.apache.hadoop.fs.s3a.scale.ITestS3AInputStreamPerformance)
  Time elapsed: 7.428 sec  <<< FAILURE!
{code}



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