Hadoop DP Notes
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What are the types of tables in Hive?
There are two types of tables.
Managed tables
External tables
Only while dropping tables these two differentiates. Otherwise both type of tables are very similar.
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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...