Requirements for Greenplum
This section describes the requirements, access privileges, and other features of HVR when using Greenplum for replication. For information about the capabilities supported by HVR on Greenplum, see Capabilities for Greenplum.
For information about compatibility and supported versions of Greenplum with HVR platforms, see Platform Compatibility Matrix.
HVR does not need to be installed on any of the nodes of the Greenplum cluster. It can be installed on a machine outside the cluster from which it uses ODBC to connect to the Greenplum cluster. HVR requires the DataDirect Connect XE ODBC driver for Greenplum installed (on the machine from which HVR connects to Greenplum server). HVR only supports ODBC driver version from 126.96.36.199 to 7.1.6.
This section lists and describes the connection details required for creating Greenplum location in HVR.
|Node||The hostname or ip-address of the machine on which the Greenplum server is running. |
|Port||The port on which the Greenplum server is expecting connections. |
|Database||The name of the Greenplum database. |
|User||The username to connect HVR to the Greenplum Database. |
|Password||The password of the User to connect HVR to the Greenplum Database.|
|Linux / Unix|
|Driver Manager Library||The directory path where the Unix ODBC Driver Manager Library is installed.|
|ODBCINST||The directory path where odbcinst.ini file is located. |
|ODBC Driver||The user defined (installed) ODBC driver to connect HVR to the Greenplum server.|
Bulk Refresh and Burst Integrate
To use the Greenplum Parallel File Distribution (gpfdist) server for bulk loading operations (Bulk Refresh and Integrate with Burst) into Greenplum for maximum performance, ensure that gpfdist is configured on the machine from which HVR will connect to Greenplum.
Define action LocationProperties with parameters /StagingDirectoryHvr and /StagingDirectoryDb:
- The value for /StagingDirectoryHvr should be equal to the -d (directory) option of the gpfdist server command.
- The value for /StagingDirectoryDb should be set to gpfdist://<hostname>:<port> where hostname is the name of the machine used to connect to Greenplum and port is the -p (http port) option of the gpfdist server command.
Example of a gpfdist command line in Linux & Unix:
/opt/gpfdist-4.3.0/gpfdist -p 33333 -d /home/hvr/tsuite_staging -l /home/hvr/staging/gpfdist.log -m 10485760
On Windows, the gpfdist is a service and the values can be retrieved from the "Path to Executable" on the properties dialog of the service.
Grants for Compare, Refresh and Integrate
The hvr user requires the following privileges:
grant connect and create table on the database grant select, insert, update, delete on replicated tables
If the HVR user needs to change tables which are in another schema (using action TableProperties /Schema=myschema) then the following grants are needed:
grant usage on myschema to hvr_user;
When HVR Refresh is used to create the target tables, the following is also needed:
grant create on myschema to hvr_user;
HVR's internal tables, like burst and state-tables, will be created in schema public unless the search_path is set for this connection. This can be done using action: Environment /Name=HVR_SQL_INIT /Value="set search_path=hvrschema;". In this case the following grants are also needed:
grant usage on hvrschema to hvr_user; grant create on hvrschema to hvr_user;