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https://issues.apache.org/jira/browse/HBASE-26254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17409658#comment-17409658
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Andrew Kyle Purtell commented on HBASE-26254:
---------------------------------------------
[~shahrs87] I pasted the relevant stacktrace on this issue. This test flakes
when the unit test suite is run on an Amazon EC2 x64 M5 class instance. Java 8.
If you cannot reproduce you should still be able to deduce from the failed
assert what happened. Why did the assert fail?
> [branch-2.4] Flaky tests
> ------------------------
>
> Key: HBASE-26254
> URL: https://issues.apache.org/jira/browse/HBASE-26254
> Project: HBase
> Issue Type: Task
> Components: test
> Affects Versions: 2.4.6
> Reporter: Andrew Kyle Purtell
> Priority: Minor
> Fix For: 2.4.7
>
>
> Findings listed below. Address on/with subtasks.
> org.apache.hadoop.hbase.namequeues.TestSlowLogAccessor.testHigherSlowLogs
> [~vjasani]
> {quote}
> {noformat}
> java.lang.AssertionError: Waiting timed out after [7,000] msec
> at org.junit.Assert.fail(Assert.java:89)
> at org.apache.hadoop.hbase.Waiter.waitFor(Waiter.java:203)
> at org.apache.hadoop.hbase.Waiter.waitFor(Waiter.java:137)
> at
> org.apache.hadoop.hbase.HBaseCommonTestingUtility.waitFor(HBaseCommonTestingUtility.java:253)
> at
> org.apache.hadoop.hbase.namequeues.TestSlowLogAccessor.testHigherSlowLogs(TestSlowLogAccessor.java:211)
> {noformat}
> {quote}
> org.apache.hadoop.hbase.replication.regionserver.TestBasicWALEntryStreamFSHLog.testSizeOfLogQueue
> [~shahrs87]
> {quote}
> {noformat}
> java.lang.AssertionError: expected:<1> but was:<2>
> at org.junit.Assert.fail(Assert.java:89)
> at org.junit.Assert.failNotEquals(Assert.java:835)
> at org.junit.Assert.assertEquals(Assert.java:647)
> at org.junit.Assert.assertEquals(Assert.java:633)
> at
> org.apache.hadoop.hbase.replication.regionserver.TestBasicWALEntryStream.testSizeOfLogQueue(TestBasicWALEntryStream.java:701)
> {noformat}
> {quote}
> org.apache.hadoop.hbase.util.TestFromClientSide3WoUnsafe.testScanAfterDeletingSpecifiedRow
> (committer no longer active)
> {quote}
> {noformat}
> java.lang.AssertionError: expected:<1> but was:<0>
> at org.junit.Assert.fail(Assert.java:89)
> at org.junit.Assert.failNotEquals(Assert.java:835)
> at org.junit.Assert.assertEquals(Assert.java:647)
> at org.junit.Assert.assertEquals(Assert.java:633)
> at
> org.apache.hadoop.hbase.client.TestFromClientSide3.testScanAfterDeletingSpecifiedRow(TestFromClientSide3.java:206)
> {noformat}
> {quote}
> org.apache.hadoop.hbase.replication.regionserver.TestReplicationSource.testReplicationSourceInitializingMetric
> [~sandeep.pal]
> {quote}
> {noformat}
> java.lang.AssertionError: Waiting timed out after [1,000] msec
> at org.junit.Assert.fail(Assert.java:89)
> at org.apache.hadoop.hbase.Waiter.waitFor(Waiter.java:203)
> at org.apache.hadoop.hbase.Waiter.waitFor(Waiter.java:137)
> at
> org.apache.hadoop.hbase.replication.regionserver.TestReplicationSource.testReplicationSourceInitializingMetric(TestReplicationSource.java:583)
> {noformat}
> {quote}
> org.apache.hadoop.hbase.security.access.TestCellACLWithMultipleVersions.testCellPermissionwithVersions
> [~apurtell]
> {quote}
> {noformat}
> java.lang.AssertionError: expected:<1> but was:<2>
> at org.junit.Assert.fail(Assert.java:89)
> at org.junit.Assert.failNotEquals(Assert.java:835)
> at org.junit.Assert.assertEquals(Assert.java:647)
> at org.junit.Assert.assertEquals(Assert.java:633)
> at
> org.apache.hadoop.hbase.security.access.SecureTestUtil.verifyAllowed(SecureTestUtil.java:181)
> at
> org.apache.hadoop.hbase.security.access.TestCellACLWithMultipleVersions.testCellPermissionwithVersions(TestCellACLWithMultipleVersions.java:243)
> {noformat}
> {quote}
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