[jira] [Updated] (HDDS-3080) Configurable container placement policy may not be compatible with pipeline placement policy

["Siddharth Wagle (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDDS-3080?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Siddharth Wagle updated HDDS-3080:
----------------------------------
    Parent Issue: HDDS-3722  (was: HDDS-698)

> Configurable container placement policy may not be compatible with pipeline placement policy
> --------------------------------------------------------------------------------------------
>
>                 Key: HDDS-3080
>                 URL: https://issues.apache.org/jira/browse/HDDS-3080
>             Project: Hadoop Distributed Data Store
>          Issue Type: Sub-task
>          Components: SCM
>    Affects Versions: 0.6.0
>            Reporter: Stephen O'Donnell
>            Priority: Major
>
> New pipelines are created on hosts in a rack aware way using PipelinePlacementPolicy, which supports only rack aware and random.
> However the Container Placement Policy used by ReplicationManager can be configured between the following using the config option ozone.scm.container.placement.impl:
> SCMContainerPlacementRackAware
> SCMContainerPlacementCapacity
> SCMContainerPlacementRandom
> If there is a network topology configured via net.topology.table.file.name, then it would be possible to have an incompatible setting for ozone.scm.container.placement.impl.
> We need to consider how to ensure the replication manager and Pipeline Provider always use compatible policies. One option may be to merge the rack aware policies as suggested in HDDS-3079, and also allow Capacity and Random to be used in the pipeline provider.



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