What does the command mapred.job.tracker do?
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Define streaming?
Explain what if rack 2 and datanode fails?
How is HDFS fault tolerant?
How to come out of the insert mode?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
What other technologies have you used in hadoop sta ck?
Explain the core components of hadoop?
How did you debug your Hadoop code ?
What is the jobtracker?
Which are the three main hdfs-site.xml properties?
Can you give us some more details about ssh communication between masters and the slaves?
How does an hadoop application look like or their basic components?
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