Add README.md and update tag

src/main/resources/oozie/spark_hdfs_lr/README.md

@@ -0,0 +1,17 @@
+Instructions for running this oozie application:
+
+- create a directory `spark_hdfs_lr/` in HDFS for the oozie application.
+
+- upload `workflow.xml` to `spark_hdfs_lr/apps/spark/`.
+
+- use `mvn clean package` to create the jar package of spark-starter if you haven't done so.
+
+- upload the jar package `spark-starter/target/spark-starter-2.0-SNAPSHOT-jar-with-dependencies.jar` to `spark_hdfs_lr/apps/lib/`.
+
+- upload resource files `spark-starter/src/main/resources/data/lr_data.txt` to `spark_hdfs_lr/data/`.
+
+- update `nameNode` and `jobTracker` in `job.properties` if you are running on the cluster other than AR.
+
+- export OOZIE_URL, for example, `export OOZIE_URL=https://axonitered-oozie.red.ygrid.yahoo.com:4443/oozie/`.
+
+- submit the oozie job using `oozie job -run -config job.properties -auth KERBEROS`

src/main/resources/oozie/spark_hdfs_lr/job.properties

@@ -1,5 +1,6 @@
 nameNode=hdfs://axonitered-nn1.red.ygrid.yahoo.com:8020
 jobTracker=axonitered-jt1.red.ygrid.yahoo.com:8032
 wfRoot=spark_hdfs_lr
+sparkTag=spark_latest
 oozie.libpath=/user/${user.name}/${wfRoot}/apps/lib
 oozie.wf.application.path=${nameNode}/user/${user.name}/${wfRoot}/apps/spark

src/main/resources/oozie/spark_hdfs_lr/workflow.xml

@@ -11,7 +11,7 @@
             <configuration>
                 <property>
                     <name>oozie.action.sharelib.for.spark</name>
-                    <value>spark_latest</value>
+                    <value>${sparkTag}</value>
                 </property>
             </configuration>
             <master>yarn</master>
@@ -32,7 +32,7 @@
             <configuration>
                 <property>
                     <name>oozie.action.sharelib.for.spark</name>
-                    <value>spark_latest</value>
+                    <value>${sparkTag}</value>
                 </property>
             </configuration>
             <master>yarn</master>
@@ -53,7 +53,7 @@
             <configuration>
                 <property>
                     <name>oozie.action.sharelib.for.spark</name>
-                    <value>spark_latest</value>
+                    <value>${sparkTag}</value>
                 </property>
             </configuration>
             <master>yarn</master>