Thanks you very much for the detailed reply. I will proceed this way. Aldian
2014-06-04 16:15 GMT+02:00 Nikolas Everett <[email protected]>: > > > > On Wed, Jun 4, 2014 at 10:03 AM, Aldian <[email protected]> wrote: > >> Hi >> >> I am currently using elasticsearch 1.0.2. Since I have a memory leak >> problem that forces me to restart it every 5 or 6 days, I am considering >> upgrading to 1.2.1. But I did not found any upgrade guide, nor indications >> whether new versions were retro-compatible. Please indicate if there is any >> risk for the data? >> > > > The data is compatible. Sometimes, like when Elasticsearch jumps a major > version, the protocol that Elasticsearch servers use to communicate with > eachother isn't backwards compatible. This is rare, and the 1.0.2->1.2.1 > upgrade is fully backwards compatible. That being said, there are some > issues with running a cluster with two versions of Elasticsearch: you > (mostly) can't move data from a newer node to an older node. Features of > the new version may degrade because they aren't getting what they need from > their peers who are on the old version. This is generally OK because you > won't be relying on features of the newer version until after the upgrade. > > The upshot: a rolling upgrade is safe for you. Turn off shard assignment > on the cluster, update on node, restart elasticsearch on that node, turn > shard assignment back on, wait for the cluster to go green, repeat. > > Make sure to upgrade any plugins that you have installed when you upgrade > Elasticsearch. > > Nik > > -- > You received this message because you are subscribed to a topic in the > Google Groups "elasticsearch" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/elasticsearch/wF-WCPLUdQo/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elasticsearch/CAPmjWd3NB5x4nydx6N3ggAhqeWh%2B4LTrj_7L2ZkqYh4FCu%2BY0w%40mail.gmail.com > <https://groups.google.com/d/msgid/elasticsearch/CAPmjWd3NB5x4nydx6N3ggAhqeWh%2B4LTrj_7L2ZkqYh4FCu%2BY0w%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- Cordialement, Aldian -- 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/CAECUaLxBANfsPMUq6U%2B5GPVEttMNVNUzAjYtuuGJv-0aAPMZWQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
