I'm not sure if this is related but there is work on designing sequence numbers that are decentralized time based UUIDs. If they were assigned to Lucene segments, shards could declare what segments they already have, when a recovery process runs. Feature is planned for 1.3
https://github.com/elasticsearch/elasticsearch/issues/5941 Jörg On Wed, May 28, 2014 at 7:01 AM, Ivan Brusic <[email protected]> wrote: > My understanding is that Lucene now provides checksums, but that sequence > numbers is a functionality built into Elasticsearch. > > I do not think that functionality has been released with 1.2, but I could > be wrong. The item below it, zen discovery, is definitely not part of 1.2 > > -- > Ivan > > > On Tue, May 27, 2014 at 7:36 AM, Chris Rimondi <[email protected]>wrote: > >> In a blog post last month, >> http://www.elasticsearch.org/blog/resiliency-elasticsearch/, Shay >> pointed out that with Lucene 4.8 Elasticsearch will start using sequence >> numbers for operations on priimary shards. This will speed up recovery so >> only data that has changed need be copied on recovery. It is unclear to me >> reading the 1.2 release notes whether that has been implemented or if so >> where it is on the roadmap. Any more information on this? >> >> Thanks, >> >> Chris >> >> -- >> 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/6f8dfcd9-7258-4f1b-a33a-efe72358daa3%40googlegroups.com<https://groups.google.com/d/msgid/elasticsearch/6f8dfcd9-7258-4f1b-a33a-efe72358daa3%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/CALY%3DcQC4S1Z1gp-ECBtMLkgtdUEyAK9noVFxvFNH0_SGooqRZQ%40mail.gmail.com<https://groups.google.com/d/msgid/elasticsearch/CALY%3DcQC4S1Z1gp-ECBtMLkgtdUEyAK9noVFxvFNH0_SGooqRZQ%40mail.gmail.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/CAKdsXoEsm3cTs4dqREKVCv-KT246m1U%2BSbo_aQhoVfbUEV8CBw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
