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From Andrew Purtell <apurt...@apache.org>
Subject [DISCUSS] Branching for HBase 1.5 and Hadoop minimum version update (to 2.7)
Date Wed, 25 Apr 2018 03:37:30 GMT
Let's consider branching for HBase 1.5.

​The new feature justifying a minor increment is storage class aware
placement (HBASE-19858), and a required update in Hadoop minimum version.
It would be marked experimental. However, some of our Chinese colleagues
have been running equivalent changes in production for a couple of years
and all tests I've done with it look positive.

Hadoop hasn't released 2.6 or below in ages. In all recent discussions I
have found on their public lists, there are no plans to do so. They are
still releasing 2.7. Therefore, I think it fair to conclude the earliest
supported version of Hadoop by the Hadoop community is 2.7, and we can
adopt this position too. ​When putting together a 1.5.0 release I would
update documentation to reflect that the minimum supported Hadoop version
is now 2.7.0, and put a note to this effect in the release notes.

Are there any concerns?​

​Related, a nice to have for the new HBase 1.5 code line would be
successful compilation against Hadoop 2.9, 3.0 and 3.1.

Best regards,

Words like orphans lost among the crosstalk, meaning torn from truth's
decrepit hands
   - A23, Crosstalk

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