GH-40: coordinator rerun doesn't consider empty output-event
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Key: OOZIE-81
URL: https://issues.apache.org/jira/browse/OOZIE-81
Project: Oozie
Issue Type: Bug
Reporter: Hadoop QA
### User experience:
If the user selects cleanup but there is no "output-event" in the cooridnator
xml, the code will throw NullPointerException (NPE):
private void cleanupOutputEvents(Element eAction, String user, String
group) {
Element outputList = eAction.getChild("output-events",
eAction.getNamespace());
for (Element data : (List) outputList.getChildren("data-out",
eAction.getNamespace())) {
Line 3 will throw NPE.
Solution:
if (outputList != null) {
for (Element data : (List) outputList.getChildren("data-out",
eAction.getNamespace())) {
......
}
### Additional activities:
1. Add an unit test
2. QA needs to add one test case with this scenario.
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