Why not start a branch-3 and begin SNAPSHOT releasing of this branch right now?
+1 to dropping Hadoop 2 support in HBase 3. We need the major increment to make this kind of change, let’s take the opportunity. Regarding Hadoop 2, the discussion I have seen indicates Hadoop thinks it will be releasing 2.x for up to two more years. I don’t know how many releases there will actually be but let’s assume at least one more 2.9, and a few 2.10. My employer is expected to use these versions along a transition path to 3.x for at least the next eighteen months. We are probably typical. We won’t need Hadoop 2 support for a HBase 3 but will need it for HBase 1 and HBase 2 for “a couple years”. > On Jan 3, 2020, at 6:52 PM, Sean Busbey <[email protected]> wrote: > > I personally like having Hadoop 2 support still, but I agree the cadence > out of Hadoop has been problematic. > > I would prefer we not change the state of Hadoop support in the master > branch until we have a release plan of some kind for HBase 3. I'd rather > that be sooner rather than later. > >> On Fri, Jan 3, 2020, 18:08 张铎(Duo Zhang) <[email protected]> wrote: >> >> Support Hadoop 2.x in 3.0.0 means we need to carry it over the whole 3.x >> release lines, which seems to be a problem since the Hadoop community do >> not want to new 2.x release line any more... >> >> Nick Dimiduk <[email protected]>于2020年1月4日 周六06:55写道： >> >>> On Wed, Dec 25, 2019 at 5:38 PM 张铎(Duo Zhang) <[email protected]> >>> wrote: >>> >>>> We will only remove the hadoop 2.x support from hbase 3.x, which does >> not >>>> have a formal release plan yet, for 2.x we will still support hadoop >> 2.x. >>>> >>> >>> Indeed there is no formal release plan for HBase-3.0, but I hope it's >>> sooner than 2+ years away! What's the motivation for dropping Hadoop2 >>> support? >>> >>> Wei-Chiu Chuang <[email protected]> 于2019年12月26日周四 上午8:57写道： >>>> >>>>> With my Hadoop hat's on, we have not yet officially declared Hadoop >> 2.8 >>>>> EOL. I think the 2.8 download missing from the web page is just a >>>> mistake. >>>>> >>>>> That being said, some of the biggest Hadoop users (LinkedIn, Yahoo, >>>>> Microsoft) that I am aware of are moving up from 2.7/2.8 to 2.10, and >>>> that >>>>> 2.8.5 (the last version in the 2.8 line) was released in Sep 2018, >> more >>>>> than a year ago. It doesn't look like the community has the desire to >>>>> continue the 2.8 line. >>>>> >>>>> I think it is a little extreme to remove hadoop2 profile, given that >>>> Hadoop >>>>> 2.9 and 2.10 are still active and I expect Hadoop 2 to stay around >> for >>> at >>>>> least 2 years out. >>>>> >>>>> On Thu, Dec 26, 2019 at 8:41 AM 张铎(Duo Zhang) <[email protected] >>> >>>>> wrote: >>>>> >>>>>> Hadoop 2.8.x has been removed from the download page of hadoop so I >>>> think >>>>>> it is time to bump the hadoop dependency to 2.9.x, on master an >>>> branch-2. >>>>>> >>>>>> And the hadoop community is going to make 2.10.x the last minor >>> release >>>>>> line for 2.x >>>>>> >>>>>> >>>>>> >>>>> >>>> >>> >> https://lists.apache.org/thread.html/cab84265d632b90d66dcd1ad957a7439a2c76a987c7e62feafb4812e%40%3Ccommon-dev.hadoop.apache.org%3E >>>>>> >>>>>> >>>>>> I think this is a sign that the community is moving forward to 3.x. >>> So >>>> I >>>>>> propose we make the master branch hadoop3 only, This requires >>> changing >>>>> the >>>>>> pom a bit to active hadoop3 profile by default and remove the >> hadoop2 >>>>>> profile. >>>>>> >>>>>> Thoughts? Thanks. >>>>>> >>>>> >>>> >>> >>
