Hadoop interview questions part 40
Hadoop interview questions part 40
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Total Questions: 20
1. Workflow with id __________ should be in SUCCEEDED/KILLED/FAILED.
Correct Answer is : wfId
2. Nodes in the config _____________ must be completed successfully.
Correct Answer is : oozie.wf.rerun.skip.nodes
3. Point out the wrong statement :
Correct Answer is : All computation/processing tasks triggered by an mechanism node are remote to Oozie
4. _____________ will skip the nodes given in the config with the same exit transition as before.
Correct Answer is : Action handler
5. ________ nodes that control the start and end of the workflow and workflow job execution path.
Correct Answer is : Control
6. Node names and transitions must be conform to the following pattern =[a-zA-Z][\-_a-zA-Z0-0]*=, of up to __________ characters long.
Correct Answer is : 20
7. A workflow definition must have one ________ node.
Correct Answer is : start
8. If one or more actions started by the workflow job are executing when the ________ node is reached, the actions will be killed.
Correct Answer is : kill
9. A ___________ node enables a workflow to make a selection on the execution path to follow.
Correct Answer is : decision
10. Point out the correct statement :
Correct Answer is : All of the mentioned
11. Which of the following can be seen as a switch-case statement ?
Correct Answer is : decision
12. All decision nodes must have a _____________ element to avoid bringing the workflow into an error state if none of the predicates evaluates to true.
Correct Answer is : default
13. Point out the wrong statement :
Correct Answer is : The fork node assumes concurrent execution paths are children of the same fork node
14. The ___________ attribute in the join node is the name of the workflow join node.
Correct Answer is : name
15. If a computation/processing task -triggered by a workflow- fails to complete successfully, its transitions to :
Correct Answer is : error
16. If the failure is of ___________ nature, Oozie will suspend the workflow job.
Correct Answer is : non-transient
17. A _______________ action can be configured to perform file system cleanup and directory creation before starting the mapreduce job.
Correct Answer is : map-reduce
18. ___________ properties can be overridden by specifying them in the job-xml file or configuration element.
Correct Answer is : Pipe
19. A collection of various actions in a control dependency DAG is referred to as :
Correct Answer is : workflow
20. Point out the correct statement :
Correct Answer is : All of the mentioned
