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https://issues.apache.org/jira/browse/OAK-6531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16127013#comment-16127013
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Francesco Mari commented on OAK-6531:
-------------------------------------
[~mduerig] the binary references and TAR indices now synthesise the correct
information as of r1805065. Given that the GC log is fixed and the segment
version has been incremented by OAK-6457, the work for this issue should be
completed.
> Implement rolling upgrade from Oak 1.6
> --------------------------------------
>
> Key: OAK-6531
> URL: https://issues.apache.org/jira/browse/OAK-6531
> Project: Jackrabbit Oak
> Issue Type: New Feature
> Components: segment-tar
> Reporter: Michael Dürig
> Labels: migration, upgrade
> Fix For: 1.8, 1.7.7
>
>
> The segment format changes introduced for tail compaction (OAK-3349) must not
> require an explicit migration step. Instead there should be a rolling
> migration during normal operation.
> Things to consider:
> * Segments from Oak 1.6
> * Changes in tar index formats induced by the segment format changes
> * Changes in gc.log induced by the segment format changes
> * Required changes in the repository manifest and its interpretation
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