Google Cloud Storage
Google Cloud Storage Extension
This extension allows you to do 2 things:
- Ingest data from files stored in Google Cloud Storage.
- Write segments to deep storage in GCS.
To use this Apache Druid extension, include druid-google-extensions in the extensions load list.
Required Configuration
To configure connectivity to google cloud, run druid processes with GOOGLE_APPLICATION_CREDENTIALS=/path/to/service_account_keyfile in the environment.
Reading data from Google Cloud Storage
The Google Cloud Storage input source is supported by the Parallel task
to read objects directly from Google Cloud Storage. If you use the Hadoop task,
you can read data from Google Cloud Storage by specifying the paths in your inputSpec.
Objects can also be read directly from Google Cloud Storage via the StaticGoogleBlobStoreFirehose
Deep Storage
Deep storage can be written to Google Cloud Storage either via this extension or the druid-hdfs-storage extension.
Configuration
To configure connectivity to google cloud, run druid processes with GOOGLE_APPLICATION_CREDENTIALS=/path/to/service_account_keyfile in the environment.
| Property | Description | Possible Values | Default |
|---|---|---|---|
druid.storage.type | Must be set. | ||
druid.google.bucket | Google Storage bucket name. | Must be set. | |
druid.google.prefix | A prefix string that will be prepended to the blob names for the segments published to Google deep storage | "" | |
druid.google.maxListingLength | maximum number of input files matching a given prefix to retrieve at a time | 1024 |