On Thu, Jul 18, 2013 at 10:14 AM, ramkrishna vasudevan < ramkrishna.s.vasude...@gmail.com> wrote: ...
> We can avoid several problems with HFile V2 internals, and backwards > compatibility concerns, and allow for working tags support with no > performance impact and low risk to all HBase users who do not want tag > support, while still allowing for inline tags capabilities in a shipping > version of HBase, by introducing this in a new V3 version for HFile. > > This seems like a good tactic to me. HFileV2 has the current KV format hard-coded all over and trying to 'fix' this would probably take a bunch of effort and would jeopardize current workings. .... > > We have been working on this and will have a clean patch with good amount > of testing in time for 0.96. > > I'd think that your moving into a green field by doing an hfilev3 would make it so your work could run independent of 0.96 timeline; i.e. it could come in post 0.96? What sort of changes do you foresee necessary in core to support cell codecs? Between rpc and hfilev3? Thanks Ram, St.Ack
