|Oracle® Big Data Connectors User's Guide
Release 2 (2.1)
Part Number E36961-05
|PDF · Mobi · ePub|
Copies data from an R in-memory object (data.frame) to HDFS. All data attributes, like column names and data types, are stored as metadata with the data.
ore.frame object in the local R environment to be copied to HDFS.
The index or name of the key column.
A unique name for the new file.
dfs.name can overwrite a file with the same name. Set to
TRUE to overwrite the file, or
FALSE to signal an error.
TRUE to add a sequential number to the beginning of each line of the file, or
You can use
hdfs.put instead of
hdfs.push to copy data from
ore.frame objects, such as database tables, to HDFS. The table must be small enough to fit in R memory; otherwise, the function fails. The
hdfs.put function first reads all table data into local R memory and then transfers it to HDFS. For a small table, this function can be faster than
hdfs.push because it does not use Sqoop and thus does not have the overhead incurred by