what happens in textinformat ?
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What is heartbeat in hdfs?
List the configuration parameters that have to be specified when running a MapReduce job.
What are the four basic parameters of a reducer?
What are the main components of MapReduce Job?
List out Hadoop's three configuration files?
What is map/reduce job in hadoop?
What happens when a DataNode fails during the write process?
Is reduce-only job possible in Hadoop MapReduce?
Difference between mapreduce and spark
how can you debug Hadoop code?
How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?
Mention what is the next step after mapper or maptask?