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https://issues.apache.org/jira/browse/AURORA-1959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16284222#comment-16284222
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Jordan Ly commented on AURORA-1959:
-----------------------------------
https://reviews.apache.org/r/64459/
> Missing Ops prevent upgrade from 0.19 to master
> -----------------------------------------------
>
> Key: AURORA-1959
> URL: https://issues.apache.org/jira/browse/AURORA-1959
> Project: Aurora
> Issue Type: Bug
> Components: Scheduler
> Reporter: Jordan Ly
> Assignee: Jordan Ly
>
> Ops removed between 0.19 and master causes issues when replaying logs.
> Because the Op no longer exists in the new version, the scheduler will throw
> an exception and fail during recovery.
> The fix here is to deprecate operations over different versions. Do not write
> for one version and reads are no-ops. Then, you can remove the Op.
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