[DRILL-6662] Access AWS access key ID and secret access key using Credential Provider API for S3 storage plugin - ASF JIRA

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Details

Type: Improvement
Status: Closed
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 1.15.0
Component/s: None
Labels:
- doc-complete
- ready-to-commit

Description

Hadoop provides [CredentialProvider API|https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/CredentialProviderAPI.html] which allows passwords and other sensitive secrets to be stored in an external provider rather than in configuration files in plaintext.

Currently S3 storage plugin is accessing passwords, namely 'fs.s3a.access.key' and 'fs.s3a.secret.key', stored in clear text in Configuration with get() method. To give users an ability to remove clear text passwords for S3 from configuration files Configuration.getPassword() method should be used, given they configure 'hadoop.security.credential.provider.path' property which points to a file containing encrypted passwords instead of configuring two aforementioned properties.

By using this approach, credential providers will be checked first and if the secret is not provided or providers are not configured there will be a fallback to secrets configured in clear text (unless 'hadoop.security.credential.clear-text-fallback' is configured to be "false"), thus making new change backwards-compatible.