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HBase >> mail # dev >> [UPDATE] Finishing up 0.96 --> WAS Re: 0.95 and 0.96 remaining issues


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Re: [UPDATE] Finishing up 0.96 --> WAS Re: 0.95 and 0.96 remaining issues
On Wed, Aug 14, 2013 at 11:44 PM, ramkrishna vasudevan <
[EMAIL PROTECTED]> wrote:

> Hi Stack
>
> First I would like to thank you for the reviews and understand the
> decision.
> I would just like to highlight few facts if this does not make into 0.96
> then we may have to
> -> Handle backward compatability issues with WAL.  Currently inorder to
> retrieve tags we write a taglength thought it is 0.  This would help us to
> replay WAL with Tags.
>

Is there not a version in WALEdit or on the WAL file that would allow us
distinguish a WALEdit written w/ tags from one w/o?

> -> Codecs like PRefixTreeCodec needs to be working for versions without
> Tags.  Currently as PrefixTreeCodec is not out in any release these are not
> a problem for now.
>

Could we have two codecs, one that supports tags and another that does not?
>
> So to avoid these problems we can get these Tags on 0.96 release.  May be a
> few more days of time.  Is it possible?  I can try getting people for more
> reviews too.
My sense going by recent experience is that landing big patches, what w/
review cycles and then stabilization of build post commit, is that the
process always takes way more time than I expect.  You fellas are almost
there -- tags is shaping up nicely -- and you and Anoop are super receptive
and reactive to criticism so it would all likely run faster than usual but
I predict at least another week before it lands -- perhaps too weeks -- and
that is too long for a 0.96 that is already way too late.

Lets get tags into trunk. I can help after this development release and the
release candidate gets posted.  Lets then make a tags-only release on the
heels of 0.96.  As said above, tags is cause enough for a major hbase
release.

Good on you Ram,
St.Ack