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https://issues.apache.org/jira/browse/HDDS-981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16745930#comment-16745930
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Lokesh Jain commented on HDDS-981:
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v2 patch fixes test failure in TestCloseContainerByPipeline.
> Block allocation should involve pipeline selection and then container
> selection
> -------------------------------------------------------------------------------
>
> Key: HDDS-981
> URL: https://issues.apache.org/jira/browse/HDDS-981
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: SCM
> Reporter: Lokesh Jain
> Assignee: Lokesh Jain
> Priority: Major
> Attachments: HDDS-981.001.patch, HDDS-981.002.patch
>
>
> Currently SCM maintains a list of preallocated containers and allocates
> blocks from these containers. This approach does not work well with dynamics
> of the cluster where new nodes are being added and pipelines are destroyed.
> New containers are not created until all the preallocated containers are
> exhausted.
> The Jira aims to establish a criteria in block allocation where first a
> pipeline is selected amongst the available pipelines and then a container is
> selected in that pipeline. In order to handle the dynamics of the cluster a
> fixed interval pipeline creator job can be launched which creates pipelines
> in the system.
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