Re: if one NDB node have lose data.

[huang mingyou]

thank you reply !
and I want ask another question about the ndb node's heartbeat check.
if the ndb nodes in 2 wan,and  between them have about 80 ms delay.the
cluster can work correct? and in the 2 wan ,have 2 group ndb nodes,if
the 2 wan have lose connect.then have data update in each node group
,when the network is connect,the cluster can auto  coordinate the data
charge?
                  my English is ugly,I'm so sorry, hope you can
understand my meaning. :->


2006/3/10, Stewart Smith <stewart@stripped>:
> On Wed, 2006-03-08 at 12:46 +0800, huang mingyou wrote:
> >          I have a mysql cluster with 4 ndb nodes(2 groups). if one of
> > the ndb node has some error,and lose the data. can I simply initial it
> > ,or need restore the mysql cluster backup?
>
> If you mean that one node looses data from it's disk (e.g. the disk
> melts).
>
> In this case, on node restart, it will copy all the data from the
> surviving node in the node group. i.e. you loose nothing.
>
> Remember we have synchronous replication between nodes so that COMMIT
> means that the data is on more than one node.
> --
> Stewart Smith, Software Engineer
> MySQL AB, www.mysql.com
> Office: [phone] Ext: 6616
> VoIP: 6616@stripped
> Mobile: [phone]
>
> Jumpstart your cluster:
> http://www.mysql.com/consulting/packaged/cluster.html
>
>
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   HMY