Riak Search and Yokozuna Backup Strategy

Sean McKibben graphex at graphex.com
Tue Jan 21 13:04:12 EST 2014


+1 LevelDB backup information is important to us


On Jan 20, 2014, at 4:38 PM, Elias Levy <fearsome.lucidity at gmail.com> wrote:

> Anyone from Basho care to comment?
> 
> 
> On Thu, Jan 16, 2014 at 10:19 AM, Elias Levy <fearsome.lucidity at gmail.com> wrote:
> 
> Also, while LevelDB appears to be largely an append only format, the documentation currently does not recommend live backups, presumably because there are some issues that can crop up if restoring a DB that was not cleanly shutdown.  
> 
> I am guessing those issues are the ones documented as edge cases here: https://github.com/basho/leveldb/wiki/repair-notes
> 
> That said, it looks like as of 1.4 those are largely cleared up, at least from what I gather from that page, and that one must only ensure that data is copied in a certain order and that you run the LevelDB repair algorithm when retiring the files.  
> 
> So is the backup documentation on LevelDB still correct?  Will Basho will enable hot backups on LevelDB backends any time soon?
> 
> 
> 
> On Thu, Jan 16, 2014 at 10:05 AM, Elias Levy <fearsome.lucidity at gmail.com> wrote:
> How well does Riak Search play with backups?  Can you backup the Riak Search data without bringing the node down?
> 
> The Riak documentation backup page is completely silent on Riak Search and its merge_index backend.
> 
> And looking forward, what is the backup strategy for Yokozuna?  Will it make use of Solr's Replication Handler, or something more lower level?  Will the node need to be offline to backup it up?
> 
> 
> 
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