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https://issues.apache.org/jira/browse/HBASE-20044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16372497#comment-16372497
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Duo Zhang commented on HBASE-20044:
-----------------------------------
{noformat}
commit 3a3994223c5d634bdd7ef01ef7f31ff860849575
Author: Michael Stack <st...@apache.org>
Date: Wed Feb 21 14:52:10 2018 -0800
HBASE-2004 TestClientClusterStatus is flakey
{noformat}
Should be HBASE-20044?
> TestClientClusterStatus is flakey
> ---------------------------------
>
> Key: HBASE-20044
> URL: https://issues.apache.org/jira/browse/HBASE-20044
> Project: HBase
> Issue Type: Sub-task
> Components: flakey
> Reporter: stack
> Priority: Major
> Fix For: 2.0.0
>
> Attachments: HBASE-20044.branch-2.001.patch
>
>
> It killed a nightly. Failed in flakey suite. The compare is too sensitive to
> slightest variance. Here are two failiures... one because the previous test
> had not finished putting back a Region that had been offlined, and the other
> because the count of requests was off slightly. Let me make the compare
> coarser....
> {code}
> Test set: org.apache.hadoop.hbase.TestClientClusterStatus
> -------------------------------------------------------------------------------
> Tests run: 6, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 27.858 s <<<
> FAILURE! - in org.apache.hadoop.hbase.TestClientClusterStatus
> testNone(org.apache.hadoop.hbase.TestClientClusterStatus) Time elapsed:
> 0.236 s <<< FAILURE!
> java.lang.AssertionError:
> expected:<Master: asf903.gq1.ygridcore.net,45687,1519246533030
> Number of backup masters: 2
> asf903.gq1.ygridcore.net,34661,1519246530655
> asf903.gq1.ygridcore.net,34734,1519246533133
> Number of live region servers: 4
> asf903.gq1.ygridcore.net,37432,1519246533632
> asf903.gq1.ygridcore.net,42964,1519246533554
> asf903.gq1.ygridcore.net,43699,1519246533376
> asf903.gq1.ygridcore.net,56911,1519246533711
> Number of dead region servers: 1
> asf903.gq1.ygridcore.net,57278,1519246533770
> Average load: 0.25
> Number of requests: 17
> Number of regions: 1
> Number of regions in transition: 0> but was:<Master:
> asf903.gq1.ygridcore.net,45687,1519246533030
> Number of backup masters: 2
> asf903.gq1.ygridcore.net,34661,1519246530655
> asf903.gq1.ygridcore.net,34734,1519246533133
> Number of live region servers: 4
> asf903.gq1.ygridcore.net,37432,1519246533632
> asf903.gq1.ygridcore.net,42964,1519246533554
> asf903.gq1.ygridcore.net,43699,1519246533376
> asf903.gq1.ygridcore.net,56911,1519246533711
> Number of dead region servers: 1
> asf903.gq1.ygridcore.net,57278,1519246533770
> Average load: 0.5
> Number of requests: 17
> Number of regions: 2
> Number of regions in transition: 0>
> at
> org.apache.hadoop.hbase.TestClientClusterStatus.testNone(TestClientClusterStatus.java:107)
> {code}
> and
> {code}
> [ERROR] Tests run: 6, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 2.416
> s <<< FAILURE! - in org.apache.hadoop.hbase.TestClientClusterStatus
> [ERROR] testNone(org.apache.hadoop.hbase.TestClientClusterStatus) Time
> elapsed: 0.065 s <<< FAILURE!
> java.lang.AssertionError:
> expected:<Master: 9845c79afe69,46509,1519227084385
> Number of backup masters: 2
> 9845c79afe69,35076,1519227086213
> 9845c79afe69,45963,1519227086363
> Number of live region servers: 4
> 9845c79afe69,34709,1519227086571
> 9845c79afe69,34961,1519227086645
> 9845c79afe69,35891,1519227086720
> 9845c79afe69,36139,1519227086486
> Number of dead region servers: 1
> 9845c79afe69,41992,1519227086820
> Average load: 0.5
> Number of requests: 17
> Number of regions: 2
> Number of regions in transition: 0> but was:<Master:
> 9845c79afe69,46509,1519227084385
> Number of backup masters: 2
> 9845c79afe69,35076,1519227086213
> 9845c79afe69,45963,1519227086363
> Number of live region servers: 4
> 9845c79afe69,34709,1519227086571
> 9845c79afe69,34961,1519227086645
> 9845c79afe69,35891,1519227086720
> 9845c79afe69,36139,1519227086486
> Number of dead region servers: 1
> 9845c79afe69,41992,1519227086820
> Average load: 0.5
> Number of requests: 19
> Number of regions: 2
> Number of regions in transition: 0>
> at
> org.apache.hadoop.hbase.TestClientClusterStatus.testNone(TestClientClusterStatus.java:107)
> {code}
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