src/docs/user/accumulo.txt

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Importing Data Into Accumulo
^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Sqoop supports importing records into a table in Accumulo

By specifying +\--accumulo-table+, you instruct Sqoop to import
to a table in Accumulo rather than a directory in HDFS. Sqoop will
import data to the table specified as the argument to +\--accumulo-table+.
Each row of the input table will be transformed into an Accumulo
+Mutation+ operation to a row of the output table. The key for each row is
taken from a column of the input. By default Sqoop will use the split-by
column as the row key column. If that is not specified, it will try to
identify the primary key column, if any, of the source table. You can
manually specify the row key column with +\--accumulo-row-key+. Each output
column will be placed in the same column family, which must be specified
with +\--accumulo-column-family+.

NOTE: This function is incompatible with direct import (parameter
+\--direct+), and cannot be used in the same operation as an HBase import.

If the target table does not exist, the Sqoop job will
exit with an error, unless the +--accumulo-create-table+ parameter is
specified. Otherwise, you should create the target table before running
an import.

Sqoop currently serializes all values to Accumulo by converting each field
to its string representation (as if you were importing to HDFS in text
mode), and then inserts the UTF-8 bytes of this string in the target
cell.

By default, no visibility is applied to the resulting cells in Accumulo,
so the data will be visible to any Accumulo user. Use the
+\--accumulo-visibility+ parameter to specify a visibility token to
apply to all rows in the import job.

For performance tuning, use the optional +\--accumulo-buffer-size\+ and
+\--accumulo-max-latency+ parameters. See Accumulo's documentation for
an explanation of the effects of these parameters.

In order to connect to an Accumulo instance, you must specify the location
of a Zookeeper ensemble using the +\--accumulo-zookeepers+ parameter,
the name of the Accumulo instance (+\--accumulo-instance+), and the
username and password to connect with (+\--accumulo-user+ and
+\--accumulo-password+ respectively).