On 26 Oct 2010, at 20:59, Adam Kocoloski wrote: > Hi all, I've been meaning to bring this up for a while. CouchDB uses integer > sequence numbers in the _changes feed and update_seq values, but I don't see > any sensible way to preserve that interface in BigCouch. The database > sequence in BigCouch needs to combine the sequences of several database > shards; currently it's a string formatted like > > "1234-Base64Data" > > The first piece is the sum of the shard sequence numbers and is not actually > used by BigCouch. The second piece is the actual data about the state of the > cluster. This format causes a couple of issues: > > 1) the replicator occasionally sorts sequence numbers and when it does so, it > sorts the BigCouch ones lexicographically and concludes that e.g. "99-..." is > the only checkpoint it will ever need to store. > > 2) client libraries might not treat the sequence as an opaque data type and > may break when operating against a BigCouch. > > My personal preference would be to change the format of the Apache CouchDB > sequence to a string at the next major release. Thoughts?
The next major release is 2.0. +1 on getting that fixed. Cheers Jan --
