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Posted to issues@ozone.apache.org by "Ethan Rose (Jira)" <ji...@apache.org> on 2022/06/14 20:30:00 UTC
[jira] [Commented] (HDDS-6885) Allow HDDS layout features to specify their finalization requirements
[ https://issues.apache.org/jira/browse/HDDS-6885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17554280#comment-17554280 ]
Ethan Rose commented on HDDS-6885:
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To finalize HDDS-6360 (one rocksDB per volume) without closing containers, HDDS-6886 will need to be implemented.
> Allow HDDS layout features to specify their finalization requirements
> ---------------------------------------------------------------------
>
> Key: HDDS-6885
> URL: https://issues.apache.org/jira/browse/HDDS-6885
> Project: Apache Ozone
> Issue Type: Sub-task
> Components: Ozone Datanode, SCM
> Reporter: Ethan Rose
> Assignee: Ethan Rose
> Priority: Major
>
> Add a field to each HDDS layout feature object that allows it to specify the requirements SCM must enforce when it needs to be finalized. Currently there will be two options:
> 1. Close all containers: The current way finalization works, which involves closing all pipelines and containers and moving datanodes to a readonly state until they finalize.
> 2. None: No special requirements. The layout feature can be finalized while datanodes are serving reads and writes. Individual datanodes must still be finalized before they can use new layout features.
> Another requirement could be the number of datanodes that must finalize before SCM declares finalization as complete. A minimum number may be configured by default, but some features like erasure coding may have a specific number, like 5, needed before the feature can be declared finalized.
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