OOZIE-28: Documentation on Capturing Output is Wrong
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Key: OOZIE-445
URL: https://issues.apache.org/jira/browse/OOZIE-445
Project: Oozie
Issue Type: Bug
Reporter: Hadoop QA
Assignee: Roman Shaposhnik
Priority: Minor
The [Oozie 2.3
documentation|http://yahoo.github.com/oozie/releases/2.3.0/WorkflowFunctionalSpec.html#a3.2.7_Java_Action]
has this to say about capturing the output of a Java action:
{quote}
The capture-output element can be used to propagate values back into Oozie
context, which can then be accessed via EL-functions. This needs to be written
out as a java properties format file. The filename is obtained via a System
property specified by the constant
JavaMainMapper.OOZIE_JAVA_MAIN_CAPTURE_OUTPUT_FILE
{quote}
That last sentence is wrong for the latest releases. The Java action should
write out the properties to a file whose name is given by the system property
{{oozie.action.output.properties}}. These properties can then be accessed in a
subsequent action using an EL expression like ${wf:actionData('foo')['bar']},
where {{foo}} is the name of the Java action and {{bar}} is the key for the
desired property.
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