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From Thejas Nair <the...@hortonworks.com>
Subject Re: Apache Hive 1.0 ?
Date Wed, 03 Dec 2014 05:32:43 GMT
The reasons for confusion in the Hadoop case were different. There
were many branches, and new features were added in minor version
releases, eg kerberos security was not there in "0.20.2", but it was
added in "0.20.20x".  Then you had other versions like "0.21", but the
older "0.20.20x" version was the one that was converted as 1.x.

This confusion isn't there in hive. In case of hive, every "0.x"
release has been adding new features, and releases have been
sequential. "0.x.y" releases have been maintenance releases. 1.0 is a
sequential release after 0.14, and it is a newer release than 0.14. I
agree that the version in Hadoop created lot of confusion, but I don't
see this as being the same. We could check in the user mailing list to
see if they are going to be HUGELY confused by this.

If it makes things better, we can also include the change to delete
HiveServer1 in the new release. That is a safer change, which was
mainly just deleting that old code. That would be a major difference
from 0.14. (The docs have already been updated to say that 0.14 does
not support 0.20, so I don't think we need that in 1.0).

Looks like we have agreement that 1.0 versioning scheme is a great
thing for hive. I don't think there is a strong reason to delay a 1.0
release by several months to the detriment of hive.


On Tue, Dec 2, 2014 at 8:05 PM, Xuefu Zhang <xzhang@cloudera.com> wrote:
> Major release means more functionality, while minor releases provides
> stability. Therefore, I'd think, 1.0, as a major release, should bring in
> something new to the user. If it's desirable to provide more stable
> release, then 0.14.1, 0.14.2, and so on are the right ones. In my opinion,
> we should avoid doing anti-pattern by introducing major release like a
> maintenance release and creating confusions among users.
>
> In one word, major release is NOT equal to major confusion.
>
> --Xuefu
>
> On Tue, Dec 2, 2014 at 7:29 PM, Sergey Shelukhin <sergey@hortonworks.com>
> wrote:
>
>> I think it's better to do 1.0 release off a maintenance release, since that
>> is more stable. Trunk is moving fast.
>> HBase uses odd release numbers for this purpose, where 0.95, 97, 99 etc.
>> are dev releases and 0.96, 0.98, 1.0 etc. are public; that works well for
>> baking, but since we don't have that seems like 14.0 would be a good place
>> to bake. 15.0 with bunch of new bugs that we are busy introducing may not
>> be as good for 1.0 IMHO...
>>
>> On Tue, Dec 2, 2014 at 7:21 PM, Brock Noland <brock@cloudera.com> wrote:
>>
>> > Hi Thejas,
>> >
>> > Thank you very much for your proposal!
>> >
>> > Hadoop did something similar renaming branches to branch-1 and
>> > branch-2. At the time, although I was very much in favor of the new
>> > release numbers, I thought it could have been handled better. Renaming
>> > release branches ended up being very confusing for users and I had a
>> > ton of conversations with users about how releases were related.
>> >
>> > In this situation, I feel the situation is similar, we'll release 1.0
>> > which is really just the second maintainence release of the 0.14
>> > branch. Thus it's 1.0 but really it's just 0.14 + some fixes. I feel
>> > this will again be confusing for users. For this important change, I
>> > think we should use a new release vehicle.
>> >
>> > Thus, I'd suggest we do the rename in trunk, soon, and then the next
>> > release of Hive will be 1.0.
>> >
>> > Cheers,
>> > Brock
>> >
>> > On Tue, Dec 2, 2014 at 10:07 AM, Thejas Nair <thejas@hortonworks.com>
>> > wrote:
>> > > Apache Hive is the de facto SQL query engine in the hadoop ecosystem.
>> > > I believe it is also the most widely used one as well. Hive is used in
>> > > production in large number of enterprises.
>> > > However, this 0.x.y versioning that we have been using for Hive
>> > > obscures this status of Hive.
>> > >
>> > > I propose creating a 1.0 release out of the 0.14 branch of Hive. We
>> > > already have some bug fixes for 0.14 release that have been added to
>> > > the branch and a maintenance release is due. Having it out of this
>> > > maintenance branch would create a better first 1.0 version, and we
>> > > would be able to do it soon. What would have been 0.15 version would
>> > > then become 1.1 version .
>> > >
>> > > Thoughts ?
>> > >
>> > > Thanks,
>> > > Thejas
>> > >
>> > > --
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