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Posted to common-issues@hadoop.apache.org by "David Dobbins (JIRA)" <ji...@apache.org> on 2015/06/10 15:51:00 UTC

[jira] [Created] (HADOOP-12080) swiftfs ls fails with NPE for dirs with single file

David Dobbins created HADOOP-12080:
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             Summary: swiftfs ls fails with NPE for dirs with single file
                 Key: HADOOP-12080
                 URL: https://issues.apache.org/jira/browse/HADOOP-12080
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs/swift
    Affects Versions: 2.3.0
            Reporter: David Dobbins
            Assignee: David Dobbins
            Priority: Minor


NPE from Globber.java (line 230) if a directory has only one child *and* there is no explicit parent directory object.  

To reproduce, create an object in swift directly (not using swiftfs), e.g. /foo/bar/baz in container test.  Then, try to ls the "directory" for that object:

hdfs dfs -ls swift://test.myswift/foo/bar/*

This fails for dirs containing single files because in Globber.java there is a specific test for objects with a single child.  The getFileStatus() call returns null for the object's parent (because no explicit directory object was created in swift).  However, Globber assumes that if the child exists getPath() will return an object that exist.



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