4. Configuring Oozie for Falcon

Falcon uses HCatalog for data availability notification when Hive tables are replicated. Make the following configuration changes to Oozie to ensure Hive table replication in Falcon:

Stop the Oozie service on all Falcon clusters. Run the following commands on the Oozie host machine.
su $OOZIE_USER
/usr/hdp/current/oozie-server/bin/oozie-stop.sh
where $OOZIE_USER is the Oozie user. For example, oozie.
Copy each cluster's hadoop conf directory to a different location. For example, if you have two clusters, copy one to /etc/hadoop/conf-1 and the other to /etc/hadoop/conf-2.

For each oozie-site.xml file, modify the oozie.service.HadoopAccessorService.hadoop.configurations property, specifying clusters, the RPC ports of the NameNodes, and HostManagers accordingly. For example, if Falcon connects to three clusters, specify:

<property>
     <name>oozie.service.HadoopAccessorService.hadoop.configurations</name> 
     <value>*=/etc/hadoop/conf,$NameNode:$rpcPortNN=$hadoopConfDir1,$ResourceManager1:$rpcPortRM=$hadoopConfDir1,$NameNode2=$hadoopConfDir2,$ResourceManager2:$rpcPortRM=$hadoopConfDir2,$NameNode3 :$rpcPortNN =$hadoopConfDir3,$ResourceManager3 :$rpcPortRM =$hadoopConfDir3</value>
     <description>
          Comma separated AUTHORITY=HADOOP_CONF_DIR, where AUTHORITY is the HOST:PORT of
          the Hadoop service (JobTracker, HDFS). The wildcard '*' configuration is
          used when there is no exact match for an authority. The HADOOP_CONF_DIR contains
          the relevant Hadoop *-site.xml files. If the path is relative is looked within
          the Oozie configuration directory; though the path can be absolute (i.e. to point
          to Hadoop client conf/ directories in the local filesystem.
     </description>
</property>

Add the following properties to the /etc/oozie/conf/oozie-site.xml file:

<property>
     <name>oozie.service.ProxyUserService.proxyuser.falcon.hosts</name>
     <value>*</value>
</property>
 
<property>
     <name>oozie.service.ProxyUserService.proxyuser.falcon.groups</name> 
     <value>*</value>
</property>
 
<property>
     <name>oozie.service.URIHandlerService.uri.handlers</name> 
     <value>org.apache.oozie.dependency.FSURIHandler, org.apache.oozie.dependency.HCatURIHandler</value>
</property>
 
<property>
     <name>oozie.services.ext</name>
     <value>org.apache.oozie.service.JMSAccessorService, org.apache.oozie.service.PartitionDependencyManagerService,
     org.apache.oozie.service.HCatAccessorService</value>
</property> 

<!-- Coord EL Functions Properties -->

<property>
     <name>oozie.service.ELService.ext.functions.coord-job-submit-instances</name>
     <value>now=org.apache.oozie.extensions.OozieELExtensions#ph1_now_echo,
         today=org.apache.oozie.extensions.OozieELExtensions#ph1_today_echo,
         yesterday=org.apache.oozie.extensions.OozieELExtensions#ph1_yesterday_echo,
         currentMonth=org.apache.oozie.extensions.OozieELExtensions#ph1_currentMonth_echo,
         lastMonth=org.apache.oozie.extensions.OozieELExtensions#ph1_lastMonth_echo,
         currentYear=org.apache.oozie.extensions.OozieELExtensions#ph1_currentYear_echo,
         lastYear=org.apache.oozie.extensions.OozieELExtensions#ph1_lastYear_echo,
         formatTime=org.apache.oozie.coord.CoordELFunctions#ph1_coord_formatTime_echo,
         latest=org.apache.oozie.coord.CoordELFunctions#ph2_coord_latest_echo,
         future=org.apache.oozie.coord.CoordELFunctions#ph2_coord_future_echo
     </value>
</property>
 
<property>
     <name>oozie.service.ELService.ext.functions.coord-action-create-inst</name>
     <value>now=org.apache.oozie.extensions.OozieELExtensions#ph2_now_inst,
         today=org.apache.oozie.extensions.OozieELExtensions#ph2_today_inst,
         yesterday=org.apache.oozie.extensions.OozieELExtensions#ph2_yesterday_inst,
         currentMonth=org.apache.oozie.extensions.OozieELExtensions#ph2_currentMonth_inst,
         lastMonth=org.apache.oozie.extensions.OozieELExtensions#ph2_lastMonth_inst,
         currentYear=org.apache.oozie.extensions.OozieELExtensions#ph2_currentYear_inst,
         lastYear=org.apache.oozie.extensions.OozieELExtensions#ph2_lastYear_inst,
         latest=org.apache.oozie.coord.CoordELFunctions#ph2_coord_latest_echo,
         future=org.apache.oozie.coord.CoordELFunctions#ph2_coord_future_echo,
         formatTime=org.apache.oozie.coord.CoordELFunctions#ph2_coord_formatTime,
         user=org.apache.oozie.coord.CoordELFunctions#coord_user
     </value>
</property>

 <property>
<name>oozie.service.ELService.ext.functions.coord-action-start</name>
<value>
now=org.apache.oozie.extensions.OozieELExtensions#ph2_now,
today=org.apache.oozie.extensions.OozieELExtensions#ph2_today,
yesterday=org.apache.oozie.extensions.OozieELExtensions#ph2_yesterday,
currentMonth=org.apache.oozie.extensions.OozieELExtensions#ph2_currentMonth,
lastMonth=org.apache.oozie.extensions.OozieELExtensions#ph2_lastMonth,
currentYear=org.apache.oozie.extensions.OozieELExtensions#ph2_currentYear,
lastYear=org.apache.oozie.extensions.OozieELExtensions#ph2_lastYear,
latest=org.apache.oozie.coord.CoordELFunctions#ph3_coord_latest,
future=org.apache.oozie.coord.CoordELFunctions#ph3_coord_future,
dataIn=org.apache.oozie.extensions.OozieELExtensions#ph3_dataIn,
instanceTime=org.apache.oozie.coord.CoordELFunctions#ph3_coord_nominalTime,
dateOffset=org.apache.oozie.coord.CoordELFunctions#ph3_coord_dateOffset,
formatTime=org.apache.oozie.coord.CoordELFunctions#ph3_coord_formatTime,
user=org.apache.oozie.coord.CoordELFunctions#coord_user
</value>
</property>
 
<property>
     <name>oozie.service.ELService.ext.functions.coord-sla-submit</name>
     <value>
         instanceTime=org.apache.oozie.coord.CoordELFunctions#ph1_coord_nominalTime_echo_fixed,
         user=org.apache.oozie.coord.CoordELFunctions#coord_user
     </value>
</property>
 
<property>
     <name>oozie.service.ELService.ext.functions.coord-sla-create</name>
     <value>
         instanceTime=org.apache.oozie.coord.CoordELFunctions#ph2_coord_nominalTime,
         user=org.apache.oozie.coord.CoordELFunctions#coord_user
     </value>
</property>

Copy the existing Oozie WAR file to /usr/hdp/current/oozie/oozie.war. This will ensure that all existing items in the WAR file are still present after the current update.
su root
cp $CATALINA_BASE/webapps/oozie.war /usr/hdp/current/oozie/oozie.war
where $CATALINA_BASE is the path for the Oozie web app. By default, $CATALINA_BASE is:
/var/lib/oozie/oozie-server.
Add the Falcon EL extensions to Oozie.
Copy the extension JAR files provided with the Falcon Server to a temporary directory on the Oozie server. For example, if your standalone Falcon Server is on the same machine as your Oozie server, you can just copy the JAR files.
mkdir /tmp/falcon-oozie-jars
cp/usr/hdp/current/falcon/oozie/ext/falcon-oozie-el-extension-0.6.0.2.2.1.0-*.jar \/tmp/falcon-oozie-jars/
Package the Oozie WAR file as the Oozie user
su oozie
cd /usr/hdp/current/oozie-server/bin
./oozie-setup.sh prepare-war –d /tmp/falcon-oozie-jars
Start the Oozie service on all Falcon clusters. Run these commands on the Oozie host machine.
su $OOZIE_USER
/usr/hdp/current/oozie-server/bin/oozie-start.sh
Where $OOZIE_USER is the Oozie user. For example, oozie.

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