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From Josh Elser <els...@apache.org>
Subject Re: [DISCUSS] Increase stability on o.a.h.h.Tag?
Date Thu, 21 Sep 2017 20:35:16 GMT
That really makes me groan (we have downstream users depending on code 
we've explicitly said "don't use"), but if that's what it is given the 
current state, so be it. My complaining won't fix it.


On 9/21/17 4:25 PM, Sean Busbey wrote:
> We have lots of examples of including non-Public stuff in Public APIs.
> we have docs that advise folks to be wary on relying on them beyond
> opaque symbols.
> ref: http://hbase.apache.org/book.html#hbase.client.api.surface
> On Thu, Sep 21, 2017 at 3:21 PM, Josh Elser <elserj@apache.org> wrote:
>> I was going to suggest LimitedPrivate in my original, but this doesn't make
>> sense as we're exposing Public API via CellUtil.
>> It seems odd to me that we wouldn't treat the cell tags as a supported API
>> call. However, I'm happy to remain "confused" if the rest of folks don't
>> consider tags to be intended for users :)
>> On 9/21/17 3:15 PM, Ted Yu wrote:
>>> Can we mark Tag LimitedPrivate ?
>>> We know how ATS uses Tags so it should be straight forward to keep their
>>> usage intact.
>>> On Thu, Sep 21, 2017 at 12:03 PM, Josh Elser <elserj@apache.org> wrote:
>>>> Hiya,
>>>> (Background, I'm starting what is likely to be an onerous task of looking
>>>> through downstream components and seeing what is broken with the latest
>>>> hbase-2.0.0*)
>>>> Looking at YARN's use of HBase for the Application TimelineServer, I see
>>>> that they're relying on the Tag interface.
>>>> Presently, Tag is marked as Private, yet we expose it via the Public
>>>> CellUtil.
>>>> My gut reaction is that we should bump Tag up Public since the intent is
>>>> for downstream users to, ya know, use those Tags. Any objections?
>>>> If we don't want to expose Tag, we should make a pass over the Public
>>>> methods and mark them as Private (so not as to provide a Public method
>>>> with
>>>> Private objects). CellUtil#getTag(Cell, byte) would be one such example.
>>>> - Josh

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