Hi Prometheus Dev Group,
As we know, Prometheus v3 will introduce a breaking change to TSDB, specifically the index format V3, with v2.55.0 serving as the migration gateway. Our product has a requirement to support rollback from v3 to versions prior to v2.55.0. Could we have your opinion on this? Specifically, do you foresee any issues if we develop a conversion tool to change the version number in the index files back to 2 before a rollback? >From what we understand, Prometheus v2 (starting from certain older versions) has already stopped reading/parsing the fields removed in format V3, i.e. Label Index 1...N and the Label Index Table, correct? By reviewing the related changes in v2.55.0, it seems the modifications were primarily to make format V3 recognizable while applying the same logic as format V2. Is there anything else we should consider for such a rollback mechanism? Thanks in advance for your insights! Best regards, Gavine -- You received this message because you are subscribed to the Google Groups "Prometheus Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to prometheus-developers+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/prometheus-developers/40c69925-54bd-44db-a5de-75d2a28c3105n%40googlegroups.com.
