[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[ https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16358397#comment-16358397 ] Hudson commented on HBASE-19942: FAILURE: Integrated in Jenkins build HBase-Trunk_matrix #4554 (See [https://builds.apache.org/job/HBase-Trunk_matrix/4554/]) HBASE-19942 (addendum) Fix flaky TestSimpleRpcScheduler (zghao: rev 0a5f26324cfe4eb39eb48947f11364ec39221fa6) * (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/ipc/TestSimpleRpcScheduler.java > Fix flaky TestSimpleRpcScheduler > > > Key: HBASE-19942 > URL: https://issues.apache.org/jira/browse/HBASE-19942 > Project: HBase > Issue Type: Sub-task >Reporter: Guanghao Zhang >Assignee: Guanghao Zhang >Priority: Major > Fix For: 2.0.0-beta-2 > > Attachments: HBASE-19942.branch-2.001.patch, > HBASE-19942.branch-2.addendum.patch, HBASE-19942.master.001.patch, > HBASE-19942.master.addendum.patch > > > [https://builds.apache.org/view/H-L/view/HBase/job/HBase-Find-Flaky-Tests-branch2.0/lastSuccessfulBuild/artifact/dashboard.html] > > https://builds.apache.org/job/HBASE-Flaky-Tests-branch2.0/1387/testReport/junit/org.apache.hadoop.hbase.ipc/TestSimpleRpcScheduler/testSoftAndHardQueueLimits/ > > h3. Stacktrace > java.lang.AssertionError at > org.apache.hadoop.hbase.ipc.TestSimpleRpcScheduler.testSoftAndHardQueueLimits(TestSimpleRpcScheduler.java:451) -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[ https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16357947#comment-16357947 ] Guanghao Zhang commented on HBASE-19942: Pushed addendum patch to master and branch-2. > Fix flaky TestSimpleRpcScheduler > > > Key: HBASE-19942 > URL: https://issues.apache.org/jira/browse/HBASE-19942 > Project: HBase > Issue Type: Sub-task >Reporter: Guanghao Zhang >Assignee: Guanghao Zhang >Priority: Major > Fix For: 2.0.0-beta-2 > > Attachments: HBASE-19942.branch-2.001.patch, > HBASE-19942.branch-2.addendum.patch, HBASE-19942.master.001.patch, > HBASE-19942.master.addendum.patch > > > [https://builds.apache.org/view/H-L/view/HBase/job/HBase-Find-Flaky-Tests-branch2.0/lastSuccessfulBuild/artifact/dashboard.html] > > https://builds.apache.org/job/HBASE-Flaky-Tests-branch2.0/1387/testReport/junit/org.apache.hadoop.hbase.ipc/TestSimpleRpcScheduler/testSoftAndHardQueueLimits/ > > h3. Stacktrace > java.lang.AssertionError at > org.apache.hadoop.hbase.ipc.TestSimpleRpcScheduler.testSoftAndHardQueueLimits(TestSimpleRpcScheduler.java:451) -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[
https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16357940#comment-16357940
]
Hadoop QA commented on HBASE-19942:
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:9f2f2db |
| JIRA Issue | HBASE-19942 |
| JIRA Patch URL |
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| Optional Tests | asflicense javac javadoc unit findbugs shadedjars
hadoopcheck hbaseanti checkstyle compile |
| uname | Linux 6e3f487b1289 3.13.0-135-generic #184-Ubuntu SMP Wed Oct 18
11:55:51 UTC 2017 x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
|
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https://builds.apache.org/job/PreCommit-HBASE-Build/11460/testReport/ |
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This message was automatically generated.
> Fix flaky TestSimpleRpcScheduler
>
>
> Key: HBASE-19942
> URL:
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[ https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16357934#comment-16357934 ] stack commented on HBASE-19942: --- +1 Go for it. Thanks for fixing this. > Fix flaky TestSimpleRpcScheduler > > > Key: HBASE-19942 > URL: https://issues.apache.org/jira/browse/HBASE-19942 > Project: HBase > Issue Type: Sub-task >Reporter: Guanghao Zhang >Assignee: Guanghao Zhang >Priority: Major > Fix For: 2.0.0-beta-2 > > Attachments: HBASE-19942.branch-2.001.patch, > HBASE-19942.branch-2.addendum.patch, HBASE-19942.master.001.patch, > HBASE-19942.master.addendum.patch > > > [https://builds.apache.org/view/H-L/view/HBase/job/HBase-Find-Flaky-Tests-branch2.0/lastSuccessfulBuild/artifact/dashboard.html] > > https://builds.apache.org/job/HBASE-Flaky-Tests-branch2.0/1387/testReport/junit/org.apache.hadoop.hbase.ipc/TestSimpleRpcScheduler/testSoftAndHardQueueLimits/ > > h3. Stacktrace > java.lang.AssertionError at > org.apache.hadoop.hbase.ipc.TestSimpleRpcScheduler.testSoftAndHardQueueLimits(TestSimpleRpcScheduler.java:451) -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[
https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16357912#comment-16357912
]
Hadoop QA commented on HBASE-19942:
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:eee3b01 |
| JIRA Issue | HBASE-19942 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12909867/HBASE-19942.master.addendum.patch
|
| Optional Tests | asflicense javac javadoc unit findbugs shadedjars
hadoopcheck hbaseanti checkstyle compile |
| uname | Linux 1cd847dccc98 3.13.0-139-generic #188-Ubuntu SMP Tue Jan 9
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| Build tool | maven |
| Personality |
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build@2/component/dev-support/hbase-personality.sh
|
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| maven | version: Apache Maven 3.5.2
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This message was automatically generated.
> Fix flaky TestSimpleRpcScheduler
>
>
> Key: HBASE-19942
> URL:
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[ https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16357813#comment-16357813 ] Guanghao Zhang commented on HBASE-19942: Not a same problem, let me dig more. > Fix flaky TestSimpleRpcScheduler > > > Key: HBASE-19942 > URL: https://issues.apache.org/jira/browse/HBASE-19942 > Project: HBase > Issue Type: Sub-task >Reporter: Guanghao Zhang >Assignee: Guanghao Zhang >Priority: Major > Fix For: 2.0.0-beta-2 > > Attachments: HBASE-19942.branch-2.001.patch, > HBASE-19942.master.001.patch > > > [https://builds.apache.org/view/H-L/view/HBase/job/HBase-Find-Flaky-Tests-branch2.0/lastSuccessfulBuild/artifact/dashboard.html] > > https://builds.apache.org/job/HBASE-Flaky-Tests-branch2.0/1387/testReport/junit/org.apache.hadoop.hbase.ipc/TestSimpleRpcScheduler/testSoftAndHardQueueLimits/ > > h3. Stacktrace > java.lang.AssertionError at > org.apache.hadoop.hbase.ipc.TestSimpleRpcScheduler.testSoftAndHardQueueLimits(TestSimpleRpcScheduler.java:451) -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[ https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16356900#comment-16356900 ] Duo Zhang commented on HBASE-19942: --- Maybe another bug? https://builds.apache.org/job/HBASE-Flaky-Tests/25692/testReport/junit/org.apache.hadoop.hbase.ipc/TestSimpleRpcScheduler/testHandlerIsolation/ > Fix flaky TestSimpleRpcScheduler > > > Key: HBASE-19942 > URL: https://issues.apache.org/jira/browse/HBASE-19942 > Project: HBase > Issue Type: Sub-task >Reporter: Guanghao Zhang >Assignee: Guanghao Zhang >Priority: Major > Fix For: 2.0.0-beta-2 > > Attachments: HBASE-19942.branch-2.001.patch, > HBASE-19942.master.001.patch > > > [https://builds.apache.org/view/H-L/view/HBase/job/HBase-Find-Flaky-Tests-branch2.0/lastSuccessfulBuild/artifact/dashboard.html] > > https://builds.apache.org/job/HBASE-Flaky-Tests-branch2.0/1387/testReport/junit/org.apache.hadoop.hbase.ipc/TestSimpleRpcScheduler/testSoftAndHardQueueLimits/ > > h3. Stacktrace > java.lang.AssertionError at > org.apache.hadoop.hbase.ipc.TestSimpleRpcScheduler.testSoftAndHardQueueLimits(TestSimpleRpcScheduler.java:451) -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[ https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16354912#comment-16354912 ] Hudson commented on HBASE-19942: FAILURE: Integrated in Jenkins build HBase-Trunk_matrix #4540 (See [https://builds.apache.org/job/HBase-Trunk_matrix/4540/]) HBASE-19942 Fix flaky TestSimpleRpcScheduler (zghao: rev a5b86dd77ad2866b0ab3c1774738ecb15e8719c7) * (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcExecutor.java * (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/ipc/TestSimpleRpcScheduler.java > Fix flaky TestSimpleRpcScheduler > > > Key: HBASE-19942 > URL: https://issues.apache.org/jira/browse/HBASE-19942 > Project: HBase > Issue Type: Sub-task >Reporter: Guanghao Zhang >Assignee: Guanghao Zhang >Priority: Major > Fix For: 2.0.0-beta-2 > > Attachments: HBASE-19942.branch-2.001.patch, > HBASE-19942.master.001.patch > > > [https://builds.apache.org/view/H-L/view/HBase/job/HBase-Find-Flaky-Tests-branch2.0/lastSuccessfulBuild/artifact/dashboard.html] > > https://builds.apache.org/job/HBASE-Flaky-Tests-branch2.0/1387/testReport/junit/org.apache.hadoop.hbase.ipc/TestSimpleRpcScheduler/testSoftAndHardQueueLimits/ > > h3. Stacktrace > java.lang.AssertionError at > org.apache.hadoop.hbase.ipc.TestSimpleRpcScheduler.testSoftAndHardQueueLimits(TestSimpleRpcScheduler.java:451) -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[ https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16354765#comment-16354765 ] Guanghao Zhang commented on HBASE-19942: Pushed to master and branch-2. Thanks all for reviewing. > Fix flaky TestSimpleRpcScheduler > > > Key: HBASE-19942 > URL: https://issues.apache.org/jira/browse/HBASE-19942 > Project: HBase > Issue Type: Sub-task >Reporter: Guanghao Zhang >Assignee: Guanghao Zhang >Priority: Major > Fix For: 2.0.0-beta-2 > > Attachments: HBASE-19942.branch-2.001.patch, > HBASE-19942.master.001.patch > > > [https://builds.apache.org/view/H-L/view/HBase/job/HBase-Find-Flaky-Tests-branch2.0/lastSuccessfulBuild/artifact/dashboard.html] > > https://builds.apache.org/job/HBASE-Flaky-Tests-branch2.0/1387/testReport/junit/org.apache.hadoop.hbase.ipc/TestSimpleRpcScheduler/testSoftAndHardQueueLimits/ > > h3. Stacktrace > java.lang.AssertionError at > org.apache.hadoop.hbase.ipc.TestSimpleRpcScheduler.testSoftAndHardQueueLimits(TestSimpleRpcScheduler.java:451) -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[
https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16354081#comment-16354081
]
Hadoop QA commented on HBASE-19942:
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16m 8s{color} | {color:green} Patch does not cause any errors with Hadoop
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|| || || || {color:brown} Other Tests {color} ||
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15s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}153m 50s{color} |
{color:black} {color} |
\\
\\
|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:9f2f2db |
| JIRA Issue | HBASE-19942 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12909438/HBASE-19942.branch-2.001.patch
|
| Optional Tests | asflicense javac javadoc unit findbugs shadedjars
hadoopcheck hbaseanti checkstyle compile |
| uname | Linux b3c86a12f98e 3.13.0-133-generic #182-Ubuntu SMP Tue Sep 19
15:49:21 UTC 2017 x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
|
| git revision | branch-2 / fb480775d5 |
| maven | version: Apache Maven 3.5.2
(138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T07:58:13Z) |
| Default Java | 1.8.0_151 |
| Test Results |
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This message was automatically generated.
> Fix flaky TestSimpleRpcScheduler
>
>
> Key: HBASE-19942
> URL:
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[ https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16353916#comment-16353916 ] stack commented on HBASE-19942: --- +1 on patch. That must have been tough to figure out. Thanks [~zghaobac] > Fix flaky TestSimpleRpcScheduler > > > Key: HBASE-19942 > URL: https://issues.apache.org/jira/browse/HBASE-19942 > Project: HBase > Issue Type: Sub-task >Reporter: Guanghao Zhang >Assignee: Guanghao Zhang >Priority: Major > Attachments: HBASE-19942.branch-2.001.patch, > HBASE-19942.master.001.patch > > > [https://builds.apache.org/view/H-L/view/HBase/job/HBase-Find-Flaky-Tests-branch2.0/lastSuccessfulBuild/artifact/dashboard.html] > > https://builds.apache.org/job/HBASE-Flaky-Tests-branch2.0/1387/testReport/junit/org.apache.hadoop.hbase.ipc/TestSimpleRpcScheduler/testSoftAndHardQueueLimits/ > > h3. Stacktrace > java.lang.AssertionError at > org.apache.hadoop.hbase.ipc.TestSimpleRpcScheduler.testSoftAndHardQueueLimits(TestSimpleRpcScheduler.java:451) -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[ https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16353882#comment-16353882 ] Guanghao Zhang commented on HBASE-19942: Add patch to trigger Hadoop QA for branch-2. > Fix flaky TestSimpleRpcScheduler > > > Key: HBASE-19942 > URL: https://issues.apache.org/jira/browse/HBASE-19942 > Project: HBase > Issue Type: Sub-task >Reporter: Guanghao Zhang >Assignee: Guanghao Zhang >Priority: Major > Attachments: HBASE-19942.branch-2.001.patch, > HBASE-19942.master.001.patch > > > [https://builds.apache.org/view/H-L/view/HBase/job/HBase-Find-Flaky-Tests-branch2.0/lastSuccessfulBuild/artifact/dashboard.html] > > https://builds.apache.org/job/HBASE-Flaky-Tests-branch2.0/1387/testReport/junit/org.apache.hadoop.hbase.ipc/TestSimpleRpcScheduler/testSoftAndHardQueueLimits/ > > h3. Stacktrace > java.lang.AssertionError at > org.apache.hadoop.hbase.ipc.TestSimpleRpcScheduler.testSoftAndHardQueueLimits(TestSimpleRpcScheduler.java:451) -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[
https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16353822#comment-16353822
]
Hadoop QA commented on HBASE-19942:
---
| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
20s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 0m
0s{color} | {color:blue} Findbugs executables are not available. {color} |
| {color:green}+1{color} | {color:green} hbaseanti {color} | {color:green} 0m
0s{color} | {color:green} Patch does not have any anti-patterns. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m
0s{color} | {color:green} The patch appears to include 1 new or modified test
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 5m
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27s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
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{color} |
| {color:black}{color} | {color:black} {color} | {color:black}171m 24s{color} |
{color:black} {color} |
\\
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|| Reason || Tests ||
| Failed junit tests | hadoop.hbase.security.access.TestZKPermissionWatcher |
\\
\\
|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:eee3b01 |
| JIRA Issue | HBASE-19942 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12909402/HBASE-19942.master.001.patch
|
| Optional Tests | asflicense javac javadoc unit findbugs shadedjars
hadoopcheck hbaseanti checkstyle compile |
| uname | Linux 3a2a3df0f83e 3.13.0-137-generic #186-Ubuntu SMP Mon Dec 4
19:09:19 UTC 2017 x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
|
| git revision | master / 3fa27c2382 |
| maven | version: Apache Maven 3.5.2
(138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T07:58:13Z) |
| Default Java | 1.8.0_151 |
| unit |
https://builds.apache.org/job/PreCommit-HBASE-Build/11412/artifact/patchprocess/patch-unit-hbase-server.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/11412/testReport/ |
| Max. process+thread count | 5263 (vs. ulimit of 1) |
| modules | C: hbase-server U: hbase-server |
| Console output |
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| Powered by | Apache Yetus 0.7.0
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[ https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16353788#comment-16353788 ] Ted Yu commented on HBASE-19942: lgtm Please format the above comment properly. > Fix flaky TestSimpleRpcScheduler > > > Key: HBASE-19942 > URL: https://issues.apache.org/jira/browse/HBASE-19942 > Project: HBase > Issue Type: Sub-task >Reporter: Guanghao Zhang >Assignee: Guanghao Zhang >Priority: Major > Attachments: HBASE-19942.master.001.patch > > > [https://builds.apache.org/view/H-L/view/HBase/job/HBase-Find-Flaky-Tests-branch2.0/lastSuccessfulBuild/artifact/dashboard.html] > > https://builds.apache.org/job/HBASE-Flaky-Tests-branch2.0/1387/testReport/junit/org.apache.hadoop.hbase.ipc/TestSimpleRpcScheduler/testSoftAndHardQueueLimits/ > > h3. Stacktrace > java.lang.AssertionError at > org.apache.hadoop.hbase.ipc.TestSimpleRpcScheduler.testSoftAndHardQueueLimits(TestSimpleRpcScheduler.java:451) -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Commented] (HBASE-19942) Fix flaky TestSimpleRpcScheduler
[
https://issues.apache.org/jira/browse/HBASE-19942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16353647#comment-16353647
]
Guanghao Zhang commented on HBASE-19942:
The unit test hope start a rpc executor with 0 handler. But in
RpcExecutor.java, the numCallQueues is at least 1, so the handler count is at
least 1, too. And the default call queue type is fifo. So it will start a
FastPathBalancedQueueRpcExecutor. If the handler was already start, then the
callTask will be dispatch to the handler directly and no need add to queue.
{code}
SimpleRpcScheduler scheduler = new SimpleRpcScheduler(schedConf, 0, 0, 0,
priority,
HConstants.QOS_THRESHOLD);
{code}
this.handlerCount = Math.max(handlerCount, this.numCallQueues);
protected int computeNumCallQueues(final int handlerCount, final float
callQueuesHandlersFactor) {
return Math.max(1, Math.round(handlerCount * callQueuesHandlersFactor));
}
{code}
{code}
public boolean dispatch(CallRunner callTask) throws InterruptedException {
FastPathHandler handler = popReadyHandler();
return handler != null? handler.loadCallRunner(callTask):
super.dispatch(callTask);
}
{code}
> Fix flaky TestSimpleRpcScheduler
>
>
> Key: HBASE-19942
> URL: https://issues.apache.org/jira/browse/HBASE-19942
> Project: HBase
> Issue Type: Sub-task
>Reporter: Guanghao Zhang
>Priority: Major
>
> [https://builds.apache.org/view/H-L/view/HBase/job/HBase-Find-Flaky-Tests-branch2.0/lastSuccessfulBuild/artifact/dashboard.html]
>
> https://builds.apache.org/job/HBASE-Flaky-Tests-branch2.0/1387/testReport/junit/org.apache.hadoop.hbase.ipc/TestSimpleRpcScheduler/testSoftAndHardQueueLimits/
>
> h3. Stacktrace
> java.lang.AssertionError at
> org.apache.hadoop.hbase.ipc.TestSimpleRpcScheduler.testSoftAndHardQueueLimits(TestSimpleRpcScheduler.java:451)
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