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https://issues.apache.org/jira/browse/HBASE-23658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17010229#comment-17010229
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Guanghao Zhang commented on HBASE-23658:
----------------------------------------
Use waitfor to make the ut more stable.
> Fix flaky TestSnapshotFromMaster
> --------------------------------
>
> Key: HBASE-23658
> URL: https://issues.apache.org/jira/browse/HBASE-23658
> Project: HBase
> Issue Type: Bug
> Reporter: Guanghao Zhang
> Priority: Major
>
> testAsyncSnapshotWillNotBlockSnapshotHFileCleaner is flaky. The assert may
> fail.
> {code:java}
> assertTrue(master.getSnapshotManager().isTakingAnySnapshot());
> future.get(); // in branch-2.2, here is Thread.sleep
> assertFalse(master.getSnapshotManager().isTakingAnySnapshot());
> {code}
> See
> [https://builds.apache.org/job/HBase-Flaky-Tests/job/master/5227/testReport/junit/org.apache.hadoop.hbase.master.cleaner/TestSnapshotFromMaster/testAsyncSnapshotWillNotBlockSnapshotHFileCleaner/]
>
> [https://builds.apache.org/view/H-L/view/HBase/job/HBase-Find-Flaky-Tests/job/branch-2.2/lastSuccessfulBuild/artifact/dashboard.html]
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