What is the default input format in Hadoop?
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Simply so, which is the default input formats defined in Hadoop?
Hadoop supports Text, Parquet, ORC, Sequence etc file format. Text is the default file format available in Hadoop.
Similarly, what is sequence file input format in Hadoop? Hadoop Sequence file is a flat file structure which consists of serialized/binary key-value pairs. This is the same format in which the data is stored internally during the processing of the MapReduce tasks. Hadoop SequenceFile is used in MapReduce as input/Output formats. Outputs of Maps are stored using SequenceFile.
Also know, is there a map input format in Hadoop?
Hadoop InputFormat describes the input-specification for execution of the Map-Reduce job. Input files store the data for MapReduce job. Input files reside in HDFS. Although these files format is arbitrary, we can also use line-based log files and binary format.
What is InputSplit?
InputSplit in Hadoop MapReduce is the logical representation of data. It describes a unit of work that contains a single map task in a MapReduce program. Hadoop InputSplit represents the data which is processed by an individual Mapper. The split is divided into records.