Practice Hadoop Oozie Interview Multiple Choice Questions with Answers Quiz-1

Q.1.

A ___________ node enables a workflow to make a selection on the execution path to follow.

Explanation

Q.2.

Point out the correct statement.

a) Predicates are JSP Expression Language (EL) expressions
b) Predicates are evaluated in order or appearance until one of them evaluates to true and the corresponding transition is taken
c) The name attribute in the decision node is the name of the decision node
d) All of the mentioned

Explanation

Q.3.

Which of the following can be seen as a switch-case statement?

Explanation

Q.4.

All decision nodes must have a _____________ element to avoid bringing the workflow into an error state if none of the predicates evaluates to true.

Explanation

Q.5.

Point out the wrong statement.

a) The fork and join nodes must be used in pairs
b) The fork node assumes concurrent execution paths are children of the same fork node
c) A join node waits until every concurrent execution path of a previous fork node arrives to it
d) A fork node splits one path of execution into multiple concurrent paths of execution

Explanation

Q.6.

The ___________ attribute in the join node is the name of the workflow join node.

Explanation

Q.7.

If a computation/processing task -triggered by a workflow fails to complete successfully, its transitions to _____________

Explanation

Q.8.

If the failure is of ___________ nature, Oozie will suspend the workflow job.

Explanation

Q.9.

A _______________ action can be configured to perform file system cleanup and directory creation before starting the mapreduce job.

Explanation

Q.10.

___________ properties can be overridden by specifying them in the job-xml file or configuration element.

Explanation