Hi Quanlong, If someone wishes to step up and maintain the 2.x branch, they're very welcome to. To be transparent, some of the Cloudera employees are focusing considerably more on the 3.x line and aren't currently planning to release manage additional 2.x releases.
On Wed, Jun 20, 2018 at 1:56 AM Quanlong Huang <[email protected]> wrote: > Sorry, Philip. Do you mean we won't apply new patches to the 2.x branch? I > thought you just mean to disable the automatic cherry-pick job. > > > In my limited understanding, there're two major breaking changes for the > 3.x branch: > > > * Standard SQL syntax: legacy HQL may fail on syntax errors in Impala-3.x > * Hadoop 3: Impala-3.x can only be deployed on Hadoop 3.x and Hive 2.x > If you run with IMPALA_MINICLUSTER_PROFILE=2, you should be able to continue to build and use against older versions of Hadoop. Taking support for that out is something we should do, but, frankly, it's a lot less of a pain to maintain. If you're planning on using this, it'd be useful to set up some more automated testing for it. Some of the SQL changes have flags to disable them (e.g., the reserved words list). Thanks, -- Philip
