[jira] [Created] (HADOOP-18753) S3AFileSystem doesn't consistently handle prefixes that are both files and directories between versions

["Helen Weng (Jira)" <ji...@apache.org>]

Helen Weng created HADOOP-18753:
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             Summary: S3AFileSystem doesn't consistently handle prefixes that are both files and directories between versions
                 Key: HADOOP-18753
                 URL: https://issues.apache.org/jira/browse/HADOOP-18753
             Project: Hadoop Common
          Issue Type: Bug
          Components: tools
    Affects Versions: 3.3.4
            Reporter: Helen Weng


We have a prefix structure where the prefix Spark reads is both a file and a directory. So s3://a/b is the file we are trying to read, but s3://a/b/c is also a file. In 3.2.1, listStatuses identifies a/b as a File, but a change in 3.3.4 now identifies a/b as a directory and tries to read a/b/c instead of a/b.

When s3GetFileStatus is called on the path with StatusProbeEnum HEAD, the path does return as "File". However innerListStatus first assumes that any prefix that is "nonempty" is a directory; it only calls s3GetFileStatus on empty directories and on listObjects results of the prefix.

Wonder if this is known/if there are any suggestions to get around this without changing the prefix structure?





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