Creating an external HDFS data source

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Updated at December 11, 2024

In Managed Service for Greenplum®, as an external data source with the HDFS connection type, you can use HDFS as part of Yandex Data Processing or other third-party HDFS services.

Create an external data source

Management console

REST API

gRPC API

Go to the folder page and select Managed Service for Greenplum.
Open the page of the Managed Service for Greenplum® cluster you need.
In the left-hand panel, select PXF.
Click Create data source.
Select the HDFS connection type.
Enter a source name.
Configure at least one optional setting.
Click Create.

Get an IAM token for API authentication and put it into the environment variable:
```
export IAM_TOKEN="<IAM_token>"
```

Use the PXFDatasource.Create method and make a request, e.g., via cURL:

curl \
    --request POST \
    --header "Authorization: Bearer $IAM_TOKEN" \
    --header "Content-Type: application/json" \
    --url 'https://mdb.api.cloud.yandex.net/managed-greenplum/v1/clusters/<cluster_ID>/pxf_datasources' \
    --data '{
              "datasource": {
                "name": "<external_data_source_name>",
                "hdfs": {
                  "core": {
                    "defaultFs": "<storage_type>"
                  },
                  ...
                }
              }
            }'

Where:

name: External data source name.
hdfs: External data source settings. Configure at least one optional setting.

You can get the cluster ID with a list of clusters in the folder.

View the server response to make sure the request was successful.

Get an IAM token for API authentication and put it into the environment variable:
```
export IAM_TOKEN="<IAM_token>"
```
Clone the cloudapi repository:
```
cd ~/ && git clone --depth=1 https://github.com/yandex-cloud/cloudapi
```
Below, we assume the repository contents are stored in the ~/cloudapi/ directory.

Use the PXFDatasourceService.Create call and make a request, e.g., via gRPCurl:

grpcurl \
    -format json \
    -import-path ~/cloudapi/ \
    -import-path ~/cloudapi/third_party/googleapis/ \
    -proto ~/cloudapi/yandex/cloud/mdb/greenplum/v1/pxf_service.proto \
    -rpc-header "Authorization: Bearer $IAM_TOKEN" \
    -d '{
          "cluster_id": "<cluster_ID>"
          "datasource": {
            "name": "<external_data_source_name>",
            "hdfs": {
              "core": {
                "default_fs": "<storage_type>"
              },
              ...
            }
          }
        }' \
    mdb.api.cloud.yandex.net:443 \
    yandex.cloud.mdb.greenplum.v1.PXFDatasourceService.Create

Where:

name: External data source name.
hdfs: External data source settings. Configure at least one optional setting.

You can get the cluster ID with a list of clusters in the folder.

View the server response to make sure the request was successful.

Greenplum® and Greenplum Database® are registered trademarks or trademarks of VMware, Inc. in the United States and/or other countries.

Creating an external HDFS data source

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