Hi, Maybe it has been discussed already, but I don't understand why this featuer is only located in the contib. I think that this is a really important feature that should be included and maintained.
I guess in most use-cases you will need to index your columns.... /SJ On Mon, Jul 26, 2010 at 4:53 PM, Matthew Smillie <[email protected]> wrote: > Hello Luke, Jamie, others. > > Sorry I missed this discussion; here's (as best I can) answers to a few of > the previous questions about the contributed indexing: > > 0. Work has been slow on hbase-trx (which includes both transaction and > indexing contrib) due to recent changes here. I'm doing my best to dive > in/catch up. Definitely fork it, download it, file issues, and the usual. > Best way to ping us directly is via github or [email protected] - I do > try and monitor the hbase lists, but (obviously) don't catch everything. > > 1. The current code at hbase-trx relies on an in-progress patch to this > issue: > https://issues.apache.org/jira/browse/HBASE-2641 > > Which factors log splitting out of HLog, and adds instance methods (which we > need to override for the transactional log). This is only a requirement for > the transactional aspect and indexing should work using calls to the > existing static methods in trunk, but I have not tested this approach. If > this would be of immediate use, I could probably push a branch to github in > pretty short order; ping me directly if so. (I'd be happy to take a patch, > too) > > 2. Controlling keys: you should be able to implement IndexKeyGenerator for a > significant degree of control over, er, key generation. The default > implementation (SimpleIndexKeyGenerator) functions as Samuru describes > here: http://search-hadoop.com/m/U1H6O1M6dpr/Secondary+indexes+in+0.89 > > best regards, > Matthew Smillie > Troove Technologies, Canada. >
