Hudson commented on HBASE-16507:

SUCCESS: Integrated in Jenkins build HBase-Trunk_matrix #1632 (See 
HBASE-16507 Procedure v2 - Force DDL operation to always roll forward 
(matteo.bertozzi: rev 9c58d26d3bd5bd4e10be1084a24a62ed25722689)
* (edit) 

> Procedure v2 - Force DDL operation to always roll forward
> ---------------------------------------------------------
>                 Key: HBASE-16507
>                 URL: https://issues.apache.org/jira/browse/HBASE-16507
>             Project: HBase
>          Issue Type: Sub-task
>          Components: master, proc-v2
>    Affects Versions: 2.0.0
>            Reporter: Matteo Bertozzi
>            Assignee: Matteo Bertozzi
>            Priority: Minor
>             Fix For: 2.0.0
>         Attachments: HBASE-16507-v0.patch, HBASE-16507-v1.patch
> Having rollback for DDLs was a bad idea. 
> and it turns out to be an unexpected behavior for the user. 
> DDLs only have transient errors (e.g. zk, hdfs, meta down)
> if we abort/rollback on a transient failure the user will get a failure,
> and it is not clear why the user needs to retry the command when the system 
> can do that.

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