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https://issues.apache.org/jira/browse/HDFS-10743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16186553#comment-16186553
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Hadoop QA commented on HDFS-10743:
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| (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
0s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 5s{color}
| {color:red} HDFS-10743 does not apply to trunk. Rebase required? Wrong
Branch? See https://wiki.apache.org/hadoop/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | HDFS-10743 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12823877/HDFS-10743.003.patch |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/21448/console |
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This message was automatically generated.
> MiniDFSCluster test runtimes can be drastically reduce
> ------------------------------------------------------
>
> Key: HDFS-10743
> URL: https://issues.apache.org/jira/browse/HDFS-10743
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Affects Versions: 2.0.0-alpha
> Reporter: Daryn Sharp
> Assignee: Kuhu Shukla
> Attachments: HDFS-10743.001.patch, HDFS-10743.002.patch,
> HDFS-10743.003.patch
>
>
> {{MiniDFSCluster}} tests have excessive runtimes. The main problem appears
> to be the heartbeat interval. The NN may have to wait up to 3s (default
> value) for all DNs to heartbeat, triggering registration, so NN can go
> active. Tests that repeatedly restart the NN are severely affected.
> Example for varying heartbeat intervals for {{TestFSImageWithAcl}}:
> * 3s = ~70s -- (disgusting, why I investigated)
> * 1s = ~27s
> * 500ms = ~17s -- (had to hack DNConf for millisecond precision)
> That a 4x improvement in runtime.
> 17s is still excessively long for what the test does. Further areas to
> explore when running tests:
> * Reduce numerous sleeps intervals in DN's {{BPServiceActor}}.
> * Ensure heartbeats and initial BR are sent immediately upon (re)registration.
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