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Posted to solr-user@lucene.apache.org by gpssolr2020 <ps...@gmail.com> on 2013/05/02 21:41:15 UTC

Exception with Replication in solr 3.6

Hi,

We have one master and 2 slaves with solr3.6. The below messages are logged
in solr log .


ERROR: Master at: http://server:port/solr/pe/replication is not available.
Index fetch failed. Exception: Connection reset

ERROR: Master at: http://server:port/solr/pe/replication is not available.
Index fetch failed. Exception: Read timed out

What does it mean? 

We are not getting these messages frequently.

Thanks.



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Re: Exception with Replication in solr 3.6

Posted by gpssolr2020 <ps...@gmail.com>.

Thanks Otis & Shawn.

They are in same data center but in different clusters. Slaves are in
load-balanced cluster and master is in non-load balanced cluster. So we can
say both are in same LAN.


Let me diagnose NIC and IPv6 things.


Thanks.




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Re: Exception with Replication in solr 3.6

Posted by Shawn Heisey <so...@elyograg.org>.

On 5/2/2013 1:46 PM, Otis Gospodnetic wrote:
> Looks like a network issue, especially if this is not happening
> consistently.
> 
> Otis
> Solr & ElasticSearch Support
> http://sematext.com/
> On May 2, 2013 3:42 PM, "gpssolr2020" <ps...@gmail.com> wrote:
> 
>> Hi,
>>
>> We have one master and 2 slaves with solr3.6. The below messages are logged
>> in solr log .
>>
>>
>> ERROR: Master at: http://server:port/solr/pe/replication is not available.
>> Index fetch failed. Exception: Connection reset
>>
>> ERROR: Master at: http://server:port/solr/pe/replication is not available.
>> Index fetch failed. Exception: Read timed out
>>
>> What does it mean?
>>
>> We are not getting these messages frequently.

Otis is probably right here.  Expanding on it: If this is a simple LAN
environment, I have heard of two hard-to-diagnose causes of intermittent
and weird network issues:

1) NICs with buggy firmware, especially Broadcom.
2) IPv6 is enabled, but it is configured incorrectly or not being used.

If it's the firmware, you can hopefully find a firmware upgrade on the
website of your system or NIC manufacturer.  A few NICs have firmware
that gets loaded by the operating system driver, so for those you might
need an upgraded driver or kernel.

Thanks,
Shawn

Re: Exception with Replication in solr 3.6

Posted by Otis Gospodnetic <ot...@gmail.com>.

Looks like a network issue, especially if this is not happening
consistently.

Otis
Solr & ElasticSearch Support
http://sematext.com/
On May 2, 2013 3:42 PM, "gpssolr2020" <ps...@gmail.com> wrote:

> Hi,
>
> We have one master and 2 slaves with solr3.6. The below messages are logged
> in solr log .
>
>
> ERROR: Master at: http://server:port/solr/pe/replication is not available.
> Index fetch failed. Exception: Connection reset
>
> ERROR: Master at: http://server:port/solr/pe/replication is not available.
> Index fetch failed. Exception: Read timed out
>
> What does it mean?
>
> We are not getting these messages frequently.
>
> Thanks.
>
>
>
> --
> View this message in context:
> http://lucene.472066.n3.nabble.com/Exception-with-Replication-in-solr-3-6-tp4060514.html
> Sent from the Solr - User mailing list archive at Nabble.com.
>