Hello, Kylin users and developers, As we know Hadoop 3 and HBase 2 have released for some time. Kylin starts to support Hadoop 3 since v2.5.0 in Sep 2018. As the APIs of HBase 1 and 2 are incompatible, we need to keep different branches for them. And in each release, we need to build separate packages and do a round of testing for them separately. Furthermore, Cloudera's API difference with the Apache release makes the situation worse; We need to build 4 binary packages for reach release. That has spent much of our manual effort and computing resources.
Today, Hadoop 3 + HBase 2 becomes enough mature and stable for production use; And we see more and more users are starting to use the new versions. We think it is time for Kylin to totally upgrade to the new version. So that we can focus more on Kylin itself, instead of environments. Here is my proposal: 1) From Kylin 3.1, Hadoop/HBase version upgrades to 3.1/2.1 (or a close version); 2) Hadoop 2 and HBase 1 users can use Kylin 3.0 and previous releases; 3) We will re-evaluate the need for building binary packages for Cloudera release. (we may raise another discuss) Please let us know your comments. And please also understand with the limited resource we couldn't support multiple Hadoop versions... Thanks! Best regards, Shaofeng Shi 史少锋 Apache Kylin PMC Email: shaofeng...@apache.org Apache Kylin FAQ: https://kylin.apache.org/docs/gettingstarted/faq.html Join Kylin user mail group: user-subscr...@kylin.apache.org Join Kylin dev mail group: dev-subscr...@kylin.apache.org
