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Posted to issues@ozone.apache.org by "Stephen O'Donnell (Jira)" <ji...@apache.org> on 2021/08/18 13:40:00 UTC
[jira] [Resolved] (HDDS-5622) Some improvements in
SCMCommonPlacementPolicy
[ https://issues.apache.org/jira/browse/HDDS-5622?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Stephen O'Donnell resolved HDDS-5622.
-------------------------------------
Fix Version/s: 1.2.0
Resolution: Fixed
> Some improvements in SCMCommonPlacementPolicy
> ---------------------------------------------
>
> Key: HDDS-5622
> URL: https://issues.apache.org/jira/browse/HDDS-5622
> Project: Apache Ozone
> Issue Type: Improvement
> Reporter: Janus Chow
> Assignee: Janus Chow
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.2.0
>
>
> This ticket consists of the following changes in SCMCommonPlacementPolicy.
> * refactor getRequiredRackCount() to getRequiredRackCount(int numReplicas)
> * Add a method to check if a datanode is available.
> Currently getRequiredRackCount() ingests no input arguments and the default value is ususally 1 or 2, but for EC placement policy, the required racks will be based on the numReplicas.
> The availability check method is added to SCMCommonPlacementPolicy so that it can be reused by other PlacementPolicy subclasses.
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