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https://issues.apache.org/jira/browse/HDDS-6462?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uma Maheswara Rao G updated HDDS-6462:
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Summary: Phase II : Erasure Coding Offline Recovery & Read/Write
Improvements (was: Phase II : Erasure Coding Offline Recovery)
> Phase II : Erasure Coding Offline Recovery & Read/Write Improvements
> --------------------------------------------------------------------
>
> Key: HDDS-6462
> URL: https://issues.apache.org/jira/browse/HDDS-6462
> Project: Apache Ozone
> Issue Type: New Feature
> Reporter: Uma Maheswara Rao G
> Assignee: Uma Maheswara Rao G
> Priority: Major
> Attachments: Ozone Erasure Coding_ Offline Recovery - V1.pdf
>
>
> This is an umbrella Jira for EC offline recovery work.
> As part of Phase-I, we have finished the functionality of erasure coding
> write and reads as part of the Jira HDDS-3816. That being stabilized in a
> parallel effort.
> So, this Jira to start pending recovery work to finish end-end EC MVP.
> Requirements in brief:
> # The SCM to identify the lost containers and schedule for the
> reconstructions.
> # DNs to start reconstructing the containers upon the request from DN.
> # We can decide whether we create new RM at SCM for EC work or we just reuse
> existing one. Currently there are interest to start a new RM to start it
> clean as the existing one already complex enough.
> # DNs to figure out the blocks them self by interacting with multiple EC
> block containers as single EC container may not have full set of blocks.
> Either first container or parity containers should have full block set.
> I am splitting the offline recovery part of design from HDDS-3816 and post
> here soon.
> Stay tuned for the updated doc.
> We will also create new branch for this work in some time
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