====== Replace Mulgara with BlazeGraph ======

  * Count current triples
browse http://asarepo.to.cnr.it:8080/fedora/risearch
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<code>
Language - itql
Response - CSV
Limit - Unlimited
Query:

select count(select $subject $predicate $object from <#ri> where $subject $predicate $object) from <#ri> where $subject $predicate $object;

"k0"
122874
</code>
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  * Disable Tomcat7 start at boot 
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<code>
# sysv-rc-conf 
               disable tomcat7 at boot for each runlevel
# reboot
</code>
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  * Install a second instance of Tomcat7 and BlazeGraph
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<code>
# http://it.apache.contactlab.it/tomcat/tomcat-7/v7.0.75/bin/apache-tomcat-7.0.75.tar.gz
# tar xf apache-tomcat-7.0.75.tar.gz
# mv apache-tomcat-7.0.75 /usr/share/tomcat-blzg

# useradd -m -d /var/bigdata -s /bin/false blazegraph
# nano -w /var/bigdata/.bash_profile

  export BLZG_CONF=/etc/bigdata
  export CATALINA_HOME=/usr/share/tomcat-blzg
  export CATALINA_PID="/usr/share/tomcat-blzg/catalina.pid"
  export JAVA_HOME=/usr/lib/jvm/java-8-oracle/jre
  export BLZG_USER=blazegraph
  export PATH=/usr/lib/jvm/java-8-oracle/jre/bin:/usr/share/tomcat-blzg/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
  export JAVA_OPTS="-server -Djava.awt.headless=true -Xmx10g -Xms8g -Dcom.bigdata.rdf.sail.webapp.ConfigParams.propertyFile=/etc/bigdata/RWStore.properties -Dlog4j.configuration=/etc/bigdata/log4j.properties -Dfile.encoding=UTF-8 -Dsun.jnu.encoding=UTF-8 -XX:+UseG1GC -XX:+DisableExplicitGC"

NOTE: instead of "-XX:+UseParallelOldGC" may be better "-XX:+UseG1GC -XX:+DisableExplicitGC" [thanks Diego!]
NOTE: add initial mem size to, so "-Xmx2000m" change into "-Xms2000m -Xmx2000m" [thanks Diego!]

# nano -w /usr/share/tomcat-blzg/conf/server.xml

-    <Server port="8005" shutdown="SHUTDOWN">
+    <Server port="8006" shutdown="SHUTDOWN">

-    <Connector port="8080" protocol="HTTP/1.1"
+    <Connector port="8081" protocol="HTTP/1.1"
               connectionTimeout="20000"
-               redirectPort="8443" />
+               redirectPort="8444" />

-    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
+    <Connector port="8010" protocol="AJP/1.3" redirectPort="8444" />

# mkdir -p /var/bigdata/logs
# mkdir -p /etc/bigdata/

# git clone https://github.com/discoverygarden/blazegraph_conf
# cp blazegraph_conf/RWStore.properties /etc/bigdata
# cp blazegraph_conf/log4j.properties /etc/bigdata
# cp blazegraph_conf/blazegraph_init /etc/init.d/blazegraph


# cd /usr/share/tomcat-blzg/webapps
# wget https://sourceforge.net/projects/bigdata/files/bigdata/2.1.4/blazegraph.war/download -O blazegraph.war


# chowner -R blazegraph:blazegraph /usr/share/tomcat-blzg
# chowner -R blazegraph:blazegraph /var/bigdata
# chowner -R blazegraph:blazegraph /etc/bigdata
# chmoder +x /etc/init.d/blazegraph

# update-rc.d blazegraph start 64 2 3 4 5 . stop 36 0 1 6 .
# service blazegraph start
</code>
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  * Install Trippi-sail
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<code>
# apt-get install maven
	maven is already the newest version (3.3.9-3).

# git clone https://github.com/discoverygarden/trippi-sail.git
# cd trippi-sail
# mvn package -Dfedora.version=3.8.1
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] trippi-sail ........................................ SUCCESS [01:01 min]
[INFO] trippi-sail-base ................................... SUCCESS [ 45.640 s]
[INFO] trippi-sail-blazegraph-embedded .................... SUCCESS [ 50.659 s]
[INFO] trippi-sail-blazegraph-remote ...................... SUCCESS [ 14.731 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 02:52 min
[INFO] Finished at: 2016-10-17T15:32:29+02:00
[INFO] Final Memory: 69M/440M
[INFO] ------------------------------------------------------------------------

# cd trippi-sail-blazegraph-remote/target
# tar xf trippi-sail-blazegraph-remote-0.0.1-SNAPSHOT-bin.tar.gz
# mv trippi-sail-blazegraph-remote-0.0.1-SNAPSHOT /opt/trippi-sail
# chowner -R tomcat7:tomcat7 /opt/trippi-sail

# service tomcat7 stop
</code>
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  * Configure Fedora
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<code>
# cp /etc/tomcat7/Catalina/localhost/fedora.xml ~/backup/
# nano -w /etc/tomcat7/Catalina/localhost/fedora.xml

<?xml version="1.0" encoding="UTF-8"?>
<Context>
+ <Loader
+       className="org.apache.catalina.loader.VirtualWebappLoader"
+       virtualClasspath="/opt/trippi-sail/*.jar"
+       searchVirtualFirst="true"/>
  <Parameter name="fedora.home" value="/usr/local/fedora" />
</Context>
</code>
</WRAP>
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<code>
# cp ~/trippi-sail/trippi-sail-blazegraph-remote/src/main/resources/sample-bean-config-xml/remote-blazegraph.xml /usr/local/fedora/server/config/spring/
# nano -w /usr/local/fedora/server/config/spring/remote-blazegraph.xml

+               <constructor-arg type="java.lang.String" value="http://asarepo.to.cnr.it:8081/blazegraph"/>
+               <constructor-arg type="boolean" value="false"/>
               <constructor-arg ref="httpClient" />
               <constructor-arg ref="executorPool" />

       </bean>

-        <bean class="org.trippi.impl.sesame.SesameSession">
+        <bean class="org.trippi.impl.sesame.SesameSession" scope="prototype" >
                <constructor-arg ref="trippiSailRepository" />
                <constructor-arg ref="org.trippi.AliasManager" />
-                <constructor-arg value="test://model#" />
+                <constructor-arg value="fedora://model#"/>
                <constructor-arg value="ri" />
        </bean>
</code>
</WRAP>
<WRAP prewrap center>
<code>
# chowner -R tomcat7:tomcat7 /usr/local/fedora

# cp /usr/local/fedora/server/config/fedora.fcfg ~/backup/
# nano -w /usr/local/fedora/server/config/fedora.fcfg

+<!--
    <param name="datastore" value="localMulgaraTriplestore">
      <comment>(required)
            Name of the triplestore to use. WARNING: changing the
            triplestore running the Resource Index Rebuilder.</comment>
    </param>
+-->

# cp /usr/local/fedora/server/bin/env-server.sh ~/backup/
# nano -w /usr/local/fedora/server/bin/env-server.sh

-	-cp \"$webinf\"/classes:\"$FEDORA_HOME\"/server/bin:\"$webinf\"/lib/* \
+	-cp \"$webinf\"/classes:/opt/trippi-sail/*:\"$FEDORA_HOME\"/server/bin:\"$webinf\"/lib/* \
</code>
</WRAP>
  * Rebuild RI and Mysql DB
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<code>
Check pigGen before and after
# mysql -u root -p

	mysql> use v2p2db
	mysql> select * from pidGen;

		+-------------+-----------+
		| namespace   | highestID |
		+-------------+-----------+
		| islandora   |       185 |
		| minio       |      1072 |
		| changeme    |         8 |
		| ismar       |         7 |
		| carte       |         3 |
		| volumi      |       445 |
		| hthuret     |         4 |
		| chlorophyta |        11 |
		+-------------+-----------+
		8 rows in set (0,00 sec)

	mysql> quit

</code>
</WRAP>
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<code>
# su - tomcat7 -s /bin/bash
$ cd /usr/local/fedora/server/bin/
$ export FEDORA_HOME=/usr/local/fedora
$ export PATH=$FEDORA_HOME/server/bin:$FEDORA_HOME/client/bin:$JAVA_HOME/bin:$PATH
$ export CATALINA_HOME=/usr/share/tomcat7
$ export FEDORA_WEBAPP_HOME=/var/lib/tomcat7/webapps/fedora
$ ./fedora-rebuild.sh [NOTE: by VM console]
	1) RI rebuild

$ ./fedora-rebuild.sh [NOTE: by VM console]
	2) MySQL rebuild

$ exit
</code>
</WRAP>
<WRAP prewrap center>
<code>
Recheck pidGen

Check triple count

    Browse http://asarepo.to.cnr.it:8081/blazegraph/#query

       SELECT (COUNT(*) AS ?triples) WHERE {?s ?p ?o}

triples
122874
</code>
</WRAP>
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<code>
# service tomcat7 start

Browse [?http://drupalserver/admin/islandora/configure uncheck “Use iTQL for particular queries”.]

</code>
</WRAP>
<WRAP prewrap center>
<code>
# service tomcat7 stop
# service blazegraph stop

# nano -w /etc/bigdata/log4j.properties

	log4j.rootCategory=ERROR, dest1
	...
	log4j.logger.com.bigdata=ERROR
	log4j.logger.com.bigdata.btree=ERROR

# service blazegraph start
# service tomcat7 start
</code>
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