Reading sequence file/ compressed file / or TextRecordInputStream file from hadoop

As we know sequence file are binary files with key/value pair specially build for hadoop. If we want to read file on hadoop we have option of cat which will not show the output of sequence or compressed file correctly in this case we can use -text option with hadoop command which follows:

hadoop fs -text   <file path name/filename>

which will show they correct output of the sequence file content.

Hadoop Shell Commands

namenode -format	format the DFS filesystem
secondarynamenode	run the DFS secondary namenode
namenode	run the DFS namenode
datanode	run a DFS datanode
dfsadminmradmin	run a DFS admin client
mradmin	run a Map-Reduce admin client