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Posted to issues@ozone.apache.org by "Ethan Rose (Jira)" <ji...@apache.org> on 2022/01/20 19:34:00 UTC
[jira] [Commented] (HDDS-6209) EC: Forward compatibility issue: New client to older server could fail due to the unavailability for client default replication config
[ https://issues.apache.org/jira/browse/HDDS-6209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17479630#comment-17479630 ]
Ethan Rose commented on HDDS-6209:
----------------------------------
Client versioning to handle forward and backward compatibility are being implemented in HDDS-6182. Those changes will probably be useful here.
> EC: Forward compatibility issue: New client to older server could fail due to the unavailability for client default replication config
> --------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HDDS-6209
> URL: https://issues.apache.org/jira/browse/HDDS-6209
> Project: Apache Ozone
> Issue Type: Sub-task
> Components: OM, Ozone Client
> Affects Versions: EC-Branch
> Reporter: Uma Maheswara Rao G
> Assignee: István Fajth
> Priority: Major
>
> In EC branch code, we removed the client side default configurations and moved the default configurations to server side.
> In case of client upgraded with newer client, but server are still old, will not understand the situation of client config unavailability as older server always expects the replication configs from client.
>
> I think as part of S3G, there are some implementations to handle the version incompatibilities. example OM handshaking it's version to client and client maintaining it's current version could help to solve the issue.
>
> CC: [~erose]
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