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From sanjay Radia <san...@hortonworks.com>
Subject HDFS HA Next Steps - Developers Meeting
Date Mon, 12 Mar 2012 06:19:35 GMT
We will be holding a meeting for HDFS HA developers this coming Tuesday 13th at 2pm.
The agenda is to go over the next steps for Namenode HA development.

Location: Hortonworks Inc, 455 W Maude Avenue, Suite 200, Sunnyvale CA 94085
Date: Tuesday March 13th
Time: 2-4pm.

We will have room for approx 15 folks - please send me (sanjay@hortonworks.com)  an email
if you are interested in attending so that I can reserve a spot  and confirm.  Minutes will
be posted on HDFS-1623. 


On Feb 21, 2012, at 9:16 PM, sanjay Radia wrote:

> Hello,
> We would like organize a meeting to discuss the 2nd phase of HDFS HA development.
> Right now the HA branch supports HOT-Failover, except that it is manual failover. We
are now moving into a phase to implement automatic failover.
> Please see HDFS-1623 for more details.
> Significant enhancements were completed to make HOT Failover work:
>   - Configuration changes for HA
>   - Notion of active and standby states were added to the Namenode
>   - Client-side redirection
>   - Standby processing editlogs form Active
>   - Dual block reports to Active and Standby.
> Engineers at  both Cloudera and Hortonworks have tested manual failover. 
> Please see HDFS-1623 for more details. 
> We would like to host a developers meeting on the week of March 5th (tentative) to plan
the next phase of development.
> Details of venue/conference bridge information to follow.
> Tentative Agenda:
>   - Next development steps  in automatic failover
>   - Other enhancements for HA
> Sanjay

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