lucene-solr-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Dave <hastings.recurs...@gmail.com>
Subject Re: Network segmentation of replica
Date Thu, 06 Jul 2017 22:37:29 GMT
I have tested that out in solr cloud, but for solr master slave replication the config sets
will not go without a reload, even if specified in the in the slave settings. 

> On Jul 6, 2017, at 5:56 PM, Erick Erickson <erickerickson@gmail.com> wrote:
> 
> I'm not entirely sure what happens if the sequence is
> 1> node drops out due to network glitch but Solr is still running
> 2> you upload a new configset
> 3> the network glitch repairs itself
> 4> the Solr instance reconnects.
> 
> Certainly if the Solr node is _restarted_ or _reloaded_ the new
> configs are read down.
> 
> The _index_ is always checked after a node is unavailable, so I'm sure
> of this sequence.
> 1> node drops out due to network glitch but Solr is still running
> 2> indexing continues
> 3> the network glitch repairs itself
> 4> the Solr instance reconnects.
> 5> the index is synchronized if necessary
> 
> Anyone else wants to chime in?
> 
> 
> Best,
> Erick
> 
> On Thu, Jul 6, 2017 at 2:27 PM, Lars Karlsson
> <lars.karlsson.sthlm@gmail.com> wrote:
>> Ok, so although there was a configuration change and/or schema change
>> (during network segmentation) that normally requires a manual core reload
>> (that nowadays happen automatically via the schema API), this replica will
>> get instructions from Zookeeper to update its configuration and schema,
>> reload its core, then synchronize and finally serve again,
>> 
>> Please confirm.
>> 
>> Regards
>> Lars
>> 
>> 
>>> On Thu, 6 Jul 2017 at 23:18, Erick Erickson <erickerickson@gmail.com> wrote:
>>> 
>>> right, when the node connects again to Zookeeper, it will also rejoin
>>> the collection. At that point it's index is synchronized with the
>>> leader and when it goes "active", then it should again start serving
>>> queries.
>>> 
>>> Best,
>>> Erick
>>> 
>>> On Thu, Jul 6, 2017 at 2:04 PM, Lars Karlsson
>>> <lars.karlsson.sthlm@gmail.com> wrote:
>>>> Hi all, please help clarify how solr will handle network segmented
>>> replica
>>>> meanwhile configuration and reload of cores/nodes for one collection is
>>>> applied?
>>>> 
>>>> Does the replica become part of the collection after connectivity is
>>>> restored?
>>>> 
>>>> Hence the node is not down, but lost ability to communicate to zookeepers
>>>> and other nodes for a short while.
>>>> 
>>>> Regards
>>>> Lars
>>> 

Mime
View raw message