[jira] [Created] (HADOOP-13221) s3a create() doesn't check for a parent path being a file

["Steve Loughran (JIRA)" <ji...@apache.org>]

Steve Loughran created HADOOP-13221:
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             Summary: s3a create() doesn't check for a parent path being a file
                 Key: HADOOP-13221
                 URL: https://issues.apache.org/jira/browse/HADOOP-13221
             Project: Hadoop Common
          Issue Type: Sub-task
          Components: fs/s3
    Affects Versions: 2.7.2
            Reporter: Steve Loughran
            Assignee: Rajesh Balamohan


Seen in a code review. Notable that if true, this got by all the FS contract tests —showing we missed a couple.

{{S3AFilesystem.create()}} does not examine its parent paths to verify that there does not exist one which is a file. It looks for the destination path if overwrite=false (see HADOOP-13188 for issues there), but it doesn't check the parent for not being a file, or the parent of that path.

It must go up the tree, verifying that either a path does not exist, or that the path is a directory. The scan can stop at the first entry which is is a directory, thus the operation is O(empty-directories) and not O(directories).



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