samar created HADOOP-9554:
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Summary: Introduce a api to check if authorization is supported by
the FS
Key: HADOOP-9554
URL: https://issues.apache.org/jira/browse/HADOOP-9554
Project: Hadoop Common
Issue Type: Bug
Reporter: samar
Need a new api on the FileSystem like isAuthorizationSupoorted() which would
help us to identify if we need to check for authorization. Hence, if
isAuthorizationSupoorted() == true and then only would proceed with the
ownership check. This is required because some FS like S3 does not support
Authorization and returns owners as "" . Having this check will help us skip
the owner check
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