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https://issues.apache.org/jira/browse/HDDS-3655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17140896#comment-17140896
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maobaolong commented on HDDS-3655:
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[~arp] This is a new Ozone test cluster, it is easy to reproduce, the reason is
the BackgroundPipelineCreator work hard and never stop, but the maximum
pipeline is easy to achieve, after there are no quota to create pipeline, the
log will appear every 2 min, because the default interval of
BackgroupPipelineCreator create pipeline is 2 min by default.
> SCM full of ERROR logs: Failed to create pipeline of type XXX and factor XXX
> ----------------------------------------------------------------------------
>
> Key: HDDS-3655
> URL: https://issues.apache.org/jira/browse/HDDS-3655
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: SCM
> Affects Versions: 0.6.0, 0.7.0
> Reporter: maobaolong
> Priority: Major
> Labels: TriagePending
>
> These log are too noisy.
> {code:java}
> 2020-05-20 08:56:54,839 [RatisPipelineUtilsThread] ERROR
> org.apache.hadoop.hdds.scm.pipeline.SCMPipelineManager: Failed to create
> pipeline of type RATIS and factor THREE. Exception: Pipeline creation failed
> because nodes are engaged in other pipelines and every node can only be
> engaged in max 15 pipelines. Required 3. Found 0
> 2020-05-20 08:58:54,839 [RatisPipelineUtilsThread] ERROR
> org.apache.hadoop.hdds.scm.pipeline.SCMPipelineManager: Failed to create
> pipeline of type RATIS and factor ONE. Exception: Cannot create pipeline of
> factor 1 using 0 nodes. Used 3 nodes. Healthy nodes 3
> 2020-05-20 08:58:54,839 [RatisPipelineUtilsThread] ERROR
> org.apache.hadoop.hdds.scm.pipeline.SCMPipelineManager: Failed to create
> pipeline of type RATIS and factor THREE. Exception: Pipeline creation failed
> because nodes are engaged in other pipelines and every node can only be
> engaged in max 15 pipelines. Required 3. Found 0
> 2020-05-20 09:00:54,841 [RatisPipelineUtilsThread] ERROR
> org.apache.hadoop.hdds.scm.pipeline.SCMPipelineManager: Failed to create
> pipeline of type RATIS and factor ONE. Exception: Cannot create pipeline of
> factor 1 using 0 nodes. Used 3 nodes. Healthy nodes 3
> {code}
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