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https://issues.apache.org/jira/browse/HDDS-1569?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16920753#comment-16920753
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Li Cheng commented on HDDS-1569:
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-- 'Define soft and hard upper bounds for pipeline membership'
Assuming it's talking about how many pipelines every datanode can be engaged
in, it's defined as node heaviness in #HDDS-1577 as in pipeline placement
policy. And the current default hard upper limit is 5. That's said, the max
number of pipelines where every datanode can be placed may vary after
sufficient field testing.
> Add ability to SCM for creating multiple pipelines with same datanode
> ---------------------------------------------------------------------
>
> Key: HDDS-1569
> URL: https://issues.apache.org/jira/browse/HDDS-1569
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Components: SCM
> Reporter: Siddharth Wagle
> Assignee: Li Cheng
> Priority: Major
>
> - Refactor _RatisPipelineProvider.create()_ to be able to create pipelines
> with datanodes that are not a part of sufficient pipelines
> - Define soft and hard upper bounds for pipeline membership
> - Create SCMAllocationManager that can be leveraged to get a candidate set of
> datanodes based on placement policies
> - Add the datanodes to internal datastructures
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