On 30.6.16 10:53 , Ian Boston wrote:
Hi, Does Oak core check the persisted repository version to make certain it fits in a range that is compatible with the code being run ?
SegmentMK does check the repository version since 1.0.12 and 1.1.8. The format was retrofitted in a way that older oak versions would fail fast on newer repositories. See https://issues.apache.org/jira/browse/OAK-2527 for details.
Using oak-run of any version on any repository was always safe in the sense that it would not corrupt the repository. However using post 1.0.12 oak-run on an older repository might lead to an in-place upgrade rendering the repository unusable with pre 1.0.12 versions. This situation was remedied with https://issues.apache.org/jira/browse/OAK-3855, which fails oak-run when running against an older repository version unless --force is specified.
All this also applies to the new oak-segment-tar module. As this new module introduces further backward incompatible changes, there is plans to extend these version checks further here. See https://issues.apache.org/jira/browse/OAK-4295
Michael
If it doesn't already, I think it should to avoid something like the wrong version of oak-run being used potentially damaging the repository. Best Regards Ian
