GH-322: global JT/NN/configuration section in WF XML
----------------------------------------------------
Key: OOZIE-240
URL: https://issues.apache.org/jira/browse/OOZIE-240
Project: Oozie
Issue Type: Bug
Reporter: Hadoop QA
Currently each action node must define its JT/NN and common configuration
values. Adding a global section would avoid repeating these values over and
over, reducing the length of workflow applications and making easier to modify
them in a singlle place.
<code>
<workflow-app>
...
<global>
<job-tracker>bar:8010</job-tracker>
<name-node>hdfs://foo:8020</name-node>
<configuration>
<property>
<name>mapred.queue.name</name>
<value>elt-queue</name>
</property>
...
</configuration>
</global>
...
</workflow-app>
</code>
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