Tobin Baker created HADOOP-12807:
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Summary: S3AFileSystem should read AWS credentials from
environment variables
Key: HADOOP-12807
URL: https://issues.apache.org/jira/browse/HADOOP-12807
Project: Hadoop Common
Issue Type: Improvement
Components: fs/s3
Reporter: Tobin Baker
Priority: Minor
Fix For: 2.7.3
Unlike the {{DefaultAWSCredentialsProviderChain}} in the AWS SDK, the
{{AWSCredentialsProviderChain}} constructed by {{S3AFileSystem}} does not
include an {{EnvironmentVariableCredentialsProvider}} instance. This prevents
users from supplying AWS credentials in the environment variables
{{AWS_ACCESS_KEY_ID}} and {{AWS_SECRET_ACCESS_KEY}}, which is the only
alternative in some scenarios.
In my scenario, I need to access S3 from within a test running in a CI
environment that does not support IAM roles but does allow me to supply
encrypted environment variables. Thus, the only secure approach I can use is to
supply my AWS credentials in environment variables (plaintext configuration
files are out of the question).
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