====== Solr ======
[[http://project.carrot2.org/index.html|Carro2 Project]], [[http://lucene.apache.org/solr/resources.html|Solr]]

https://wiki.apache.org/solr/SolrCloud
http://www.slideshare.net/lucenerevolution/how-to-make-a-simple-cheap-high-availability-selfhealing-solr-cluster
https://support.lucidworks.com/hc/en-us/articles/201298197-Solr-HA-DR-overview-3-x-and-4-0-SolrCloud-
https://www.credera.com/blog/ecommerce/high-availability-search-with-solrcloud/
http://stackoverflow.com/questions/20107114/howto-create-a-redumdant-instance-of-solr
http://wiki.apache.org/solr/SolrCloud
https://cwiki.apache.org/confluence/display/solr/How+SolrCloud+Works

[[.:solr:performance_tune|Performance Tuning]]
===== Create cloud =====

Delete query
<code xml>
<delete><query>*:*</query></delete>
</code>
<code bash>
# Download and extract solr 4.9.1
wget http://archive.apache.org/dist/lucene/solr/4.9.1/solr-4.9.1.tgz
tar -zxvf solr-4.9.1.tgz

# Create nodes
cp -r solr-4.9.1/example/ node1
cp -r solr-4.9.1/example/ node2
cp -r solr-4.9.1/example/ node3
cp -r solr-4.9.1/example/ node4

# Run solr with 2 shards
cd node1
java -DzkRun -DnumShards=2 -Dbootstrap_confdir=./solr/collection1/conf -Dcollection.configName=myconf -jar start.jar

# Run another shard
cd node2
java -Djetty.port=7574 -DzkHost=localhost:9983 -jar start.jar


# Create replicas
cd node3
java -Djetty.port=8900 -DzkHost=localhost:9983 -jar start.jar

cd node4
java -Djetty.port=7500 -DzkHost=localhost:9983 -jar start.jar
</code>