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https://issues.apache.org/jira/browse/HDFS-12831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16909903#comment-16909903
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hemanthboyina commented on HDFS-12831:
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it will be better if we throw exception as PathIsDirectoryException
Need to change it in INodeFIle.java
> HDFS throws FileNotFoundException on getFileBlockLocations(path-to-directory)
> -----------------------------------------------------------------------------
>
> Key: HDFS-12831
> URL: https://issues.apache.org/jira/browse/HDFS-12831
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.8.1
> Reporter: Steve Loughran
> Assignee: Hanisha Koneru
> Priority: Major
>
> The HDFS implementation of {{getFileBlockLocations(path, offset, len)}}
> throws an exception if the path references a directory.
> The base implementation (and all other filesystems) just return an empty
> array, something implemented in {{getFileBlockLocations(filestatsus, offset,
> len)}}; something written up in filesystem.md as the correct behaviour.
> # has been shown to break things: SPARK-14959
> # there's no contract tests for these APIs; shows up in HADOOP-15044.
> # even if this is considered a wontfix, it should raise something like
> {{PathIsDirectoryException}} rather than FNFE
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