I have two questions regarding loading tables which are defined as RCFile, 
Sequencfile  etc.

Q1.

1.       Suppose a table is defined as STORED AS RCFILE or SEQUENCEFILE, how do 
we load this table. If source data file is in CSV format, do we have to load 
that file in some temp table and then load the target RCFile table from this 
temp table using INSERT OVERWRITE.... If this is true then does it mean we can 
only have managed table which could be defined as RCFile,SEQUENCEFile as we can 
not load external table using INSERT statement.

2.       How can we store the data in external table which is defined as 
RCFile. Do we have to convert the source data file in RCFile format first using 
some tool.

Q2. When we use DESCRIBE FORMATTED <TableName> it shows COMPRESSED = NO. What 
does this mean, Even for compressed data in a table it shows NO.


Thanks,
Kuldeep

Reply via email to