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From Sean Busbey <bus...@cloudera.com>
Subject Re: [DISCUSS] Htrace4, Hadoop 2.7
Date Fri, 08 Jul 2016 21:04:51 GMT
On Fri, Jul 8, 2016 at 3:40 PM, Christopher <ctubbsii@apache.org> wrote:
> On Fri, Jul 8, 2016 at 11:20 AM Sean Busbey <busbey@cloudera.com> wrote:
>> Would we be bumping the Hadoop version while incrementing our minor
>> version number or our major version number?
>>
>>
>>
> Minor only, because it's not a breaking change necessarily, and it's
> unrelated to API. It'd still be reasonable for somebody to patch the 1.x
> version to use the earlier Hadoop/HTrace versions easily.
>
> Specifically, I was thinking for 1.8.0. Since H2.8 isn't out yet, that'd
> mean either no change in 1.8.0, or a change to make it sync up with H2.7.

My only concern would be that updating our listed Hadoop dependency
version would make it easy for someone to accidentally rely on a
Hadoop API call that wasn't in earlier versions, which would then make
it harder for an interested person to patch their 1.y version to use
the earlier Hadoop version.

HBase checks compilation against different hadoop versions in their
precommit checks. We could add something like that to our nightly
builds maybe?

Now that we're discussing it, I can't actually remember if we ever
documented what version(s) of Hadoop we expect to work with. So maybe
updating to the latest minor release of 2.y on each Accumulo 1.y minor
release can just be our new thing.

-- 
busbey

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