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From "Nate Cole" <nc...@hortonworks.com>
Subject Re: Review Request 30813: RU - HDFS downgrade needs skip HDFS prepare step
Date Tue, 10 Feb 2015 13:04:50 GMT


> On Feb. 10, 2015, 7:52 a.m., Nate Cole wrote:
> > ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/namenode_upgrade.py,
lines 119-120
> > <https://reviews.apache.org/r/30813/diff/1/?file=859743#file859743line119>
> >
> >     See general comment.  We may not ALWAYS be able to "do nothing".

Apologies, I thought this was for the finalize step.  I think that was already taken care
of.


- Nate


-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/30813/#review71777
-----------------------------------------------------------


On Feb. 9, 2015, 10:21 p.m., Alejandro Fernandez wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/30813/
> -----------------------------------------------------------
> 
> (Updated Feb. 9, 2015, 10:21 p.m.)
> 
> 
> Review request for Ambari, Dmitro Lisnichenko, Jonathan Hurley, Nate Cole, Tom Beerbower,
and Yurii Shylov.
> 
> 
> Bugs: AMBARI-9541
>     https://issues.apache.org/jira/browse/AMBARI-9541
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> Rolling Upgrade down grade is the same as the upgrade, with the exception that the "hdfs
dfsadmin -rollingUpgrade prepare" command does not need to be ran.
> 
> 
> Diffs
> -----
> 
>   ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/namenode_upgrade.py
f74d874 
>   ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/params.py
69cd157 
>   ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/utils.py
154e6e3 
> 
> Diff: https://reviews.apache.org/r/30813/diff/
> 
> 
> Testing
> -------
> 
> Deployed a 3-node cluster with NamenodeHA, and only HDFS and ZK, then caused a failure
on Datanode, performed a downgrade, and it correctly got to Finalize.
> 
> Unit tests are in progress.
> 
> 
> Thanks,
> 
> Alejandro Fernandez
> 
>


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