I confirm that Elasticsearch only guarantees backward compatibility of the data, not forward, so really bad things may happen when trying to downgrade to an older version. For instance, the way versions are stored changed completely (from payloads to numeric doc values) and although the 1.0 version is aware of how they were stored in 0.90.x, the opposite is not true so versioning will be broken if you downgrade.
On Fri, Mar 7, 2014 at 4:48 PM, Nikolas Everett <[email protected]> wrote: > There was a lucene upgrade in there so I don't believe you can go back. > If you haven't written anything or optimized then maybe? Unfortunately I > think your best bet it to fix the code.... Look at source filtering which > will return something more familiar. > > Sorry, > > Nik > > > On Fri, Mar 7, 2014 at 10:40 AM, Aaron Troy <[email protected]> wrote: > >> Hi all, >> >> We upgraded from a previous version (0.90.7) to 1.0 recently, but need to >> rollback to a 0.90 version due to our code not accounting for the field >> values being returned as arrays instead of strings. Will data be affected >> by the rollback, or should things be fine? >> >> -- >> You received this message because you are subscribed to the Google Groups >> "elasticsearch" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/elasticsearch/f19252c5-522f-4d95-9f60-627bddeed746%40googlegroups.com<https://groups.google.com/d/msgid/elasticsearch/f19252c5-522f-4d95-9f60-627bddeed746%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elasticsearch/CAPmjWd2gYO1NoVPjD6J8fQv0%3DL4Qujum2a26c0s%3D1G26LFU1Jw%40mail.gmail.com<https://groups.google.com/d/msgid/elasticsearch/CAPmjWd2gYO1NoVPjD6J8fQv0%3DL4Qujum2a26c0s%3D1G26LFU1Jw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- Adrien Grand -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAL6Z4j74mSjEj0JWQgc%2BppkE-AodWYjGmtB5b1XQ7qXTP9oq1g%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
