You run yarn logs -applicationId app_12345 but get an error saying 'Application not found'. What is the likely cause?

medium📝 Debug Q14 of 15

Hadoop - Cluster Administration

You run yarn logs -applicationId app_12345 but get an error saying 'Application not found'. What is the likely cause?

AThe logs directory is empty

BThe command syntax is wrong

CThe application ID is incorrect or does not exist

DYARN is not installed on the cluster

Step-by-Step Solution

Solution:

Step 1: Analyze the error message
'Application not found' means the given app ID is not recognized by YARN.
Step 2: Check command correctness
The command syntax is correct; error is about app ID validity.
Final Answer:
The application ID is incorrect or does not exist -> Option C
Quick Check:
Invalid app ID = Application not found error [OK]

Quick Trick: Check app ID spelling if 'Application not found' error appears [OK]

Common Mistakes:

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