[HADOOP-13993] transient failure of ITestS3AInputStreamPerformance.testDecompressionSequential128K

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Cannot Reproduce
• Affects Version/s: 2.8.0
• Component/s: fs/s3
• Assignee: Unassigned
• Reporter: Steve Loughran
• Created: 16/Jan/17 17:51
• Updated: 16/Jan/17 17:52
• Resolved: 16/Jan/17 17:52

Description

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

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!

Issue Links

• is depended upon by: HADOOP-11694 Über-jira: S3a phase II: robustness, scale and performance