7fb9c306e2
This patch prepares the hadoop-aws module for a future migration to using the v2 AWS SDK (HADOOP-18073) That upgrade will be incompatible; this patch prepares for it: -marks some credential providers and other classes and methods as @deprecated. -updates site documentation -reduces the visibility of the s3 client; other than for testing, it is kept private to the S3AFileSystem class. -logs some warnings when deprecated APIs are used. The warning messages are printed only once per JVM's life. To disable them, set the log level of org.apache.hadoop.fs.s3a.SDKV2Upgrade to ERROR Contributed by Ahmar Suhail |
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