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https://issues.apache.org/jira/browse/HBASE-29566?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wellington Chevreuil resolved HBASE-29566.
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Resolution: Fixed
Merged to branch-2.6 only, since it's the only affected by this flakeyness.
Thanks for the contribution, [~diyam]!
> TestPrefetch.testPrefetchWithDelay seems flakey
> -----------------------------------------------
>
> Key: HBASE-29566
> URL: https://issues.apache.org/jira/browse/HBASE-29566
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.6.3
> Reporter: Wellington Chevreuil
> Assignee: Diya Maria Abraham
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.6.4
>
>
> Noticed this TestPrefetch.testPrefetchWithDelay failing intermittently at
> branch-2.6 at least.
> {noformat}
> java.lang.AssertionError: Prefetch delay has not been expired yet
> at org.junit.Assert.fail(Assert.java:89)
> at org.junit.Assert.assertTrue(Assert.java:42)
> at
> org.apache.hadoop.hbase.io.hfile.TestPrefetch.testPrefetchWithDelay(TestPrefetch.java:330)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:566)
> at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
> {noformat}
> I believe the problem is in the while condition block:
> {noformat}
> ...
> while (!reader.prefetchStarted()) {
> assertTrue("Prefetch delay has not been expired yet",
> getElapsedTime(startTime) < PrefetchExecutor.getPrefetchDelay());
> }
> ...
> {noformat}
> We are assuming prefetch will start right away the delay, but this may not be
> guaranteed.
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