The Metadata Access Service is an application service that allows the Developer tool to access Hadoop connection information to import and preview metadata.
The Metadata Access Service contains information about the Service Principal Name (SPN) and keytab information if the Hadoop cluster uses Kerberos authentication.
Use the Administrator tool or the
infacmd
command line program to create and administer the Metadata Access Service. You can create one or more Metadata Access Services on a node. Based on your license, the Metadata Access Service can be highly available. Informatica recommends to create a separate Metadata Access Service instance for each Hadoop distribution. If you use a common Metadata Access Service instance for different Hadoop distributions, you might face exceptions.
If your domain has only one Metadata Access Service, the Developer tool uses the same Metadata Access Service by default to fetch metadata from the Hadoop cluster. If your domain has more than one Metadata Access Services, you must select a default Metadata Access Service for the Developer tool to connect to the default Metadata Access Service. Dynamic mappings do not use the Metadata Access Service.