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https://issues.apache.org/jira/browse/HDDS-1569?focusedWorklogId=327664&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-327664
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ASF GitHub Bot logged work on HDDS-1569:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 14/Oct/19 08:22
            Start Date: 14/Oct/19 08:22
    Worklog Time Spent: 10m 
      Work Description: elek commented on issue #1431: HDDS-1569 Support 
creating multiple pipelines with same datanode
URL: https://github.com/apache/hadoop/pull/1431#issuecomment-541548955
 
 
   > Ok I will send out a new PR. How to do mvn build under new repo now? I was 
not able to do it under hadoop-ozone directory.
   
   Thank you very much, to take care about the migration of your PRs. 
(Unfortunately I can't do it with github api as I can't fake the reporter and I 
would like to keep it)
   
   Regarding the build in the new repo. You can do it from the root level of 
the project:
   
    1. do `mvn clean install -f pom.ozone.xml -DskipTests` 
    2. or rebase and do a simple `mvn clean install -DskipTests`
   
   ((
   1. One of the benefit to use separated repo is to create new 
README/CONTRIBUTION.md where we can add these information. I opened HDDS-2292 
and HDDS-2293. 
   2. The other benefit is to use simple top level pom.xml. I just merged #10, 
but you need to rebase to use it.
   )) 
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 327664)
    Time Spent: 7.5h  (was: 7h 20m)

> 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
>              Labels: pull-request-available
>          Time Spent: 7.5h
>  Remaining Estimate: 0h
>
> - 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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