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https://issues.apache.org/jira/browse/HDDS-1353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16806988#comment-16806988
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Aravindan Vijayan commented on HDDS-1353:
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[~elek] I can take a stab at this.
> Metrics scm_pipeline_metrics_num_pipeline_creation_failed keeps increasing
> because of BackgroundPipelineCreator
> ---------------------------------------------------------------------------------------------------------------
>
> Key: HDDS-1353
> URL: https://issues.apache.org/jira/browse/HDDS-1353
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
> Components: SCM
> Reporter: Elek, Marton
> Priority: Minor
> Labels: newbie
>
> There is a {{BackgroundPipelineCreator}} thread in SCM which runs in a fixed
> interval and tries to create pipelines. This BackgroundPipelineCreator uses
> {{IOException}} as exit criteria (no more pipelines can be created). In each
> run of BackgroundPipelineCreator we exit when we are not able to create any
> more pipelines, i.e. when we get IOException while trying to create the
> pipeline. This means that
> {{scm_pipeline_metrics_num_pipeline_creation_failed}} value will get
> incremented in each run of BackgroundPipelineCreator.
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