I agree with Quanlong that we can mark 3.0 as experimental and introduce
IMPALA-3307 in 3.1.

Adding a feature flag to switch back and forth between the legacy timezone
names and the new timezone names is certainly possible, although I think
maintaining and testing the flag would be too much of a trouble.

To help users who want to keep the old timezone names, we can create a
config file that contains the definitions for all the legacy names and link
it from the online documentation. Users then can download the config file
and add the legacy names to Impala with the --hdfs_zone_alias_conf flag.

On Wed, Jun 13, 2018 at 6:51 AM, Quanlong Huang <[EMAIL PROTECTED]>