Create/Edit mappings tab

Most HBase data is stored as raw bytes. PDI uses mapping to decode values and execute meaningful comparisons for column-based result set filtering. Use the Create/Edit mapping tab to define metadata about the values that are stored in an HBase table.

Perform the following tasks before writing a value to HBase:

Configure a connection by using the Hadoop cluster properties.
Define which column family the value belongs to and its type.
Specify type information about the key of the table.

Select the name of an existing mapping to load the fields defined in that mapping into the key field table. Alternatively, you can create a new HBase table and mapping simultaneously by configuring the fields of the mapping and naming the table in the HBase table name list.

This tab includes the following options:

Option	Description
Hadoop Cluster	Select an existing Hadoop cluster configuration from the drop-down box. If you do not have an existing connection, click New. If you need to modify an existing connection, click Edit. See Connect to a Hadoop cluster with the PDI client for instructions.
HBase table name	Select the source HBase table name that has a defined mapping from the drop-down list of displayed names. Connection information must be valid and complete for this list to populate. Select a table to populate the Mapping name drop-down box with the names of available mappings for that table.
Get table names (button)	Click to retrieve a list of all existing table names for the HBase table name field. The table names display the namespace, followed by a colon, then the table name. See Namespaces.
Mapping name	Select the name of an existing map for the source table. The drop-down list is empty when no mappings are defined for the selected table. You can define multiple mappings on the same HBase table using different subsets of columns.