Hadoop DP Notes
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How can we import a subset of rows from a table without using the where clause?
We can run a filtering query on the database and save the result to a temporary table in database.
Then use the sqoop import command without using the –where clause
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What are the main components of Mapreduce Job ?
Main driver class which provides job configuration parameters. Mapper class which must extend org.apache.hadoop.mapredu...
TO_CHAR
This will be used to extract various date formats. The available date formats as follows. Syntax: to_char ( date , fo...