Debug stuck MapReduce

#1

What are proper ways to debug MapReduce job that gets stuck?

On our environment, one MapReduce job has been running since 02/25, and its status is still running. However, I couldn’t find the MR action in MapReduceQueue nor in Cluster.actionDump

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#2

Have a look into splunk if your job produce logs after setting the log level to debug:

Cluster.setLogLevel('logger_name_as_in_js_file', 'DEBUG', TIME_IN_SECONDS)
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