when hadoop enter in safe mode?
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If a data Node is full how it's identified?
What are the hadoop's three configuration files?
Which are the two types of 'writes' in HDFS?
How to keep HDFS cluster balanced?
What is a Record Reader in hadoop?
Which one is default InputFormat in Hadoop ?
Explain the use of tasktracker in the hadoop cluster?
Define streaming?
What does ‘jps’ command do?
What is difference between regular file system and HDFS?
Why do we use HDFS for applications having large data sets and not when there are lot of small files?
Which files are used by the startup and shutdown commands?