On Mon, Mar 15, 2010 at 6:12 AM, Mark Fletcher
<mark.fletcher2...@gmail.com>wrote:
>
> I wanted to configure one core as Master and one core as slave.
> This is my existing configuration:-
>
> In my SOLR_HOME I have conf/schema.xml, conf/solrconfig.xml and the others
> when no core was present
> Also in my SOLR_HOME are solr.xml and coreA created using the CREATE
> command
> for cores
>
> I have my other coreB's index in a different dataDir
>
> I believe in this configuration both the cores share the same schema.xml
> and
> solrconfig.xml. I added the master slave replication code in my
> {SOLR_HOME}/conf/solrconfig.xml.
>
> <requestHandler name="/replication" class="solr.ReplicationHandler" >
> <lst name="master">
> <!--Replicate on 'startup' and 'commit'. 'optimize' is also a valid
> value for replicateAfter. -->
> <!--<str name="replicateAfter">startup</str>-->
> <str name="replicateAfter">optimize</str>
> <!--Create a backup after 'optimize'. Other values can be 'commit',
> 'startup'. It is possible to have multiple entries of this config string.
> Note that this is just for backup, replication does not require this. -->
> <!-- <str name="backupAfter">optimize</str> -->
> <!--If configuration files need to be replicated give the names
> here, separated by comma -->
> <!--<str name="confFiles">schema.xml,stopwords.txt,elevate.xml</str>
> -->
> <!--The default value of reservation is 10 secs.See the documentation
> below . Normally , you should not need to specify this -->
> <str name="commitReserveDuration">00:00:10</str>
> </lst>
> </requestHandler>
>
>
> Just below that I specified the slave
>
> <requestHandler name="/replication" class="solr.ReplicationHandler" >
> <lst name="slave">
> <!--fully qualified url for the replication handler of master . It
> is possible to pass on this as a request param for the fetchindex
> command-->
> <str name="masterUrl">{specified the instanceDir}
> /coreA/replication</str>
>
The masterUrl is a HTTP URL. I'm not sure if you have specified a HTTP URL
here.
> <!--Interval in which the slave should poll master .Format is
> HH:mm:ss . If this is absent slave does not poll automatically.
> But a fetchindex can be triggered from the admin or the http API
> -->
>
> <!--<str name="pollInterval">00:00:20</str> -->
>
> <!-- THE FOLLOWING PARAMETERS ARE USUALLY NOT REQUIRED-->
> <!--to use compression while transferring the index files. The
> possible values are internal|external
> if the value is 'external' make sure that your master Solr has the
> settings to honour the accept-encoding header.
> see here for details
> http://wiki.apache.org/solr/SolrHttpCompression
> If it is 'internal' everything will be taken care of automatically.
> USE THIS ONLY IF YOUR BANDWIDTH IS LOW . THIS CAN ACTUALLY SLOWDOWN
> REPLICATION IN A LAN-->
> <str name="compression">internal</str>
> <!--The following values are used when the slave connects to the
> master to download the index files.
> Default values implicitly set as 5000ms and 10000ms respectively.
> The user DOES NOT need to specify
> these unless the bandwidth is extremely low or if there is an
> extremely high latency-->
> <str name="httpConnTimeout">5000</str>
> <str name="httpReadTimeout">10000</str>
> <!-- If HTTP Basic authentication is enabled on the master, then the
> slave can be configured with the following -->
> <str name="httpBasicAuthUser">username</str>
> <str name="httpBasicAuthPassword">password</str>
> </lst>
> </requestHandler>
>
> When I optimize coreA, replication to coreB doesn't happen. CoreA (my
> supposed to be master here) gets the new values but not coreB. When I tried
> the *startup* option in the first block of replication it gave lucene write
> error in the index so I went for optimize.
>
>
What was the lucene write error that you saw? Can you paste the stack trace?
> Is there something wrong here or do I need to have separate solrconfig.xml
> for coreA and coreB to clearly indicate who is master and who is slave by
> including only one of the replicaiton codes in the corresponding
> solrconfig.xml rather than have a common solrconfig.xml and specify both in
> that.
>
> If I need to specify separate solrconfig.xml for both cores, how do I do
> that??
>
>
When you create the core using the CoreAdmin, you can specify an alternate
solrconfig.xml through the "config" parameter.
--
Regards,
Shalin Shekhar Mangar.
